798 Pedagogická orientace, 2015, 25(6), 798-821 ARTICLE Adaptation of Teacher Power Use Scale to Lower Secondary Students and Student Teachers1 Kateřina Vlčkováa, Jan Marešb, Stanislav Ježekc a Masaryk University, Faculty of Education, Department of Education b Masaryk University Faculty of Education, Department of Psychology c Masaryk University, Faculty of Social Sciences, Institute for Research of Children, Youth and Family/Department of Psychology Received 29 September 2015; final version received 18 December 2015; accepted 21 December 2015 Abstract: Power can be defined as an ability to influence opinions, values, and behaviour of others. The realisation of curricular aims is enabled by clearly established power relationships in classes. Newly qualified teachers often struggle with establishing power relationships. French and Raven's influential typology of social power as a relational phenomenon distinguishes coercive, reward, legitimate, referent, and expert bases of teacher power. In our methodological study we adapted Teacher Power Use Scale - TPUS (Schrodt, Witt, & Turman, 2007) that measures these power bases. The adaptation focuses (instead of tertiary teachers, their students, and Anglo-Saxon context) on student teachers, lower secondary students, and reflects the Czech sociocultural context. The non-probability adaptation sample consists of 1686 students from 96 lower secondary classes taught by 96 student teachers during their long term teaching practice. Our data basically support French and Raven's theory and the original TPUS, except that the structure of student teacher power bases seems to be naturally simpler in the perception of lower secondary students. Above all, legitimate and coercive student teachers power bases were strongly inter-correlated, i.e. perceived by students as one factor; similar to teacher power bases structure in other Czech data. Keywords: power bases, Teacher Power Use Scale, student teachers, lower secondary education, scale adaptation, confirmatory factor analysis Power in the social science context can be understood as an ability of a person or a group to influence opinions, values, and behaviour of others (McCroskey et al., 2006). Power is viewed as a situational (Jacobs, 2012; Schulz & Oyler, 2006), circular (Buzzelli & Johnston, 2001; Aultman, Williams-Johnson, 1 This paper was funded by Czech Science Foundation - Project GA13-24456S Power in the Classes Taught by Student Teachers. The authors thank for the kind support. DOI: 10.5817/PedOr2015-6-798 Adaptation of Teacher Power Use Scale. 799 & Schutz, 2009] and reciprocal phenomenon (McCroskey, 2006; Moscovici, 2007]. As such it represents one of the most studied phenomena in social sciences (e. g. Simmel, 1896; Weber, 1922; Foucault, 1975]. It is obvious from the definition that power is crucial for educational and instructional settings. 1 Teacher power Recent research shows that the realisation of instructional aims is enabled by clearly established power relationships in classes (Šalamounova & Švaříček, 2012]. This supports Bernstein's [1996] theory of dominance of regulative instructional discourse while the didactic discourse constitutes a part of the regulative one. Power negotiation and use of power are understood as an inherent part of the educational process (McCroskey & Richmond, 1983; Šeďová, 2011]. As Sarason [1990] notes, teachers' professional competence can be also measured in relation to their ability to set up power relations in the classes. According to research findings (Richmond & McCroskey, 1992; Staton, 1992], newly qualified teachers have the necessary knowledge related to the subject matter, but they do not know how to establish power relationships in the classroom. The harsh and rude part of the reality of everyday classroom life can cause collapse of their ideals formed during teacher training - "the reality shock" (Veenman, 1984]. These might be one of the main reasons why novice teachers quit their profession (Šalamounova, Bradová, & Lojdová, 2014; Blížkovský Kučerová, Kurelová et al., 2000, p. 169] which is regarded as a social and economic problem in many European countries. Therefore it is important to focus educational research on the topic of power relationships in the classroom and to develop reliable instruments for measuring it. 1.1 Typology of teacher power: Power bases Traditional and the most influential typology of social power as a relational phenomenon comes from French and Raven (1959]. It distinguishes teacher's power according to the principle which it is based on (as perceived by students].2 The typology of power bases has been developed and partly revised over the years but the main five power bases remained stable (Raven, 1992,1993]. 2 Examples of situations for each power base can be seen in appendix in Czech original adaptation of TPUS or in table 1 in English back translation of the Czech adaptation. 800 Kateřina Vlčková, Jan Mareš, Stanislav Ježek Reward power comes from a student's perception that the teacher can provide him/her with positive benefits or rewards (extra points, grades, psychological reward such as affirmation from the teacher, relational rewards such as being complimented by the teacher in front of the classmates]. The teacher power emanates in this case from the student wishing to receive the benefits. Coercive power presents a student's awareness that the teacher can punish him/her for example through grade penalties, critique, disciplining in front of classmates, or losing the teacher's favour. The teacher power in this case emanates from the student wishing to avoid unpleasantness. Legitimate power reflects the teacher's authoritative role in relation to the student. Social norms assign to persons who hold position of legitimate authority a certain right to verse or influence others. Referent powerreflects a student's positive regard for the teacher and personal identification with the teacher perceived as similarity or interpersonal affinity being manifested by the student's feeling of unity with the teacher, or the desire to have same identity (i.e. admiring the teacher]. The teacher's ability to influence a student stems from the positive regard in which the student holds the teacher. Expert power emanates from the teacher's knowledge or expertise as an educator in the subject area. In the class, the student may recognize the professional background, superior understanding of the subject, as well as the teaching skills of the teacher. 1.2 Instruments measuring teacher power bases Attempts to measure teacher power bases as defined above led to the construction of Perceived Power Measure (PPM] and Relative Power Measure (RPM] by McCroskey and Richmond (1983] and later to the construction of Power Base Measure (PBM] by Roach (1995a]. In recent years an improved Teacher Power Use Scale (TPUS] was developed by Schrodt, Witt, and Turman (2007]. Perceived Power Measure - PPM (McCroskey & Richmond, 1983] was originally constructed by Richmond, McCrosky Davis, and Koontz (1980] who were inspired by Student's (1968] measure designed for employees in general. Student used a single-item-type measure on a five-point Likert-type scale. Richmond et al. (1980] decided to use five seven-point bipolar Adaptation of Teacher Power Use Scale. 801 scales [agree-disagree, wrong-right etc.] for each type of power in order to estimate reliability. Later, McCroskey and Richmond [1983] made a minor modification of this instrument. Respondents are given the definitions of the five power bases and answer five statements regarding these power bases on a Likert type scale. Teachers answer statements of the following character: / use ... power. Students answer statements: My teacher uses ... power. Richmond etal. [1980] as well as McCroskey and Richmond [1983] reported high reliability of the instrument. For McCroskey and Richmond [1983] it was important to measure not only the relative use of power bases, but the degree of use of each power base as well, therefore they designed another instrument called Relative Power Measure - RPM which accompanies the PPM. The RPM also first explains the five power bases to respondents; then asks them to estimate the percentage of total power usage that stems from each base, with the requirement that the total equals 100 percent. Later Roach's [1995a] Power Base Measure (PBM] improved the measurement of teacher power. PBM was primarily developed to measure power use of teaching assistants (Roach, 1995b] in relation to college outcomes. PBM consists of 20 Likert-type items3 (four for each power base] describing perceived effects of teacher power on student behaviour (e.g. coercive power: The student will experience negative consequences for noncompliance with instructor requests; referent power: The student should comply to please the instructor; legitimate power: The student must comply because it is a university rule or expectation; expert power: The student should comply because the instructor has great wisdom/knowledge behind the request; reward power: The instructor will see to it that the student acquires some desirable benefits if he/she does what is suggested). PBM showed high overall reliability coefficients - over .85 (Roach, 1995a,b] and in subsequent research the alpha coefficients of reliability of individual scales ranged from .66 to .90 (Golish, 1999; Turman & Schrodt, 2006]. Nevertheless, the factor loadings for the scale indicated that a number of items tended to cross-load onto multiple factors (Roach, 1995a]. Turman and Schrodt (2006] reported weak factor loadings for legitimate and coercive power on teacher power. Schrodt, Witt and Turman (2007] found that PBM may not adequately represent the latent construct of power use in instructional contexts. According to them, one possible explanation for this result may be that the items representing coercive and legitimate power on the PBM are less salient 3 With five-point frequency scale that ranges from never to very often. 802 Kateřina Vlčková, Jan Mareš, Stanislav Ježek to students in the college classroom than the items representing prosocial forms of power, such as expert, reward, and referent power. Also some items of reward power (e.g. If the student complies with instructor requests, he/she will receive some type of compensation or prize.) may be perceived by students as manipulative and therefore measuring some aspects of coercive power. Thus, they designed another instrument. Teacher Power Use Scale - TPUS (Schrodt, Witt, & Turman, 2007] presents the latest instrument measuring perceived (observable] power of teacher. The original TPUS measures the five above mentioned power bases with 30 items on a seven-point Likert-type scale ranging from never to always. Items were constructed on the basis of PPM, RPM, PBM and typologies of behaviour alteration techniques described in observational research. According to Schrodt, Witt, and Turman (2007] the instrument shows better psychometric properties than Perceived Power Measure by McCroskey and Richmond's (1983] or Roach's (1995a] Power Base Measure. The TPUS demonstrated better internal reliability, concurrent and discriminant validity, and it contained more valid and reliable indicators for the five power bases. Coefficient of reliability Cronbach's alpha ranged between .77 and .90. The TPUS was better at measuring so called anti-social forms of power (coercive and legitimate] and pro-social forms of power (referent and reward] at the aggregated level as well. In future research this newest instrument might be improved and above all adapted to other educational levels and socio-cultural contexts, which is our attempt. 1.3 Findings on teacher power Most of the studies that used instruments based on the French and Raven's typology focused on tertiary students and teachers. According to research findings, the most frequently used power base reported by students seemed to be coercive power, followed by legitimate and expert power; the least used were reward and referent power (Jamieson & Thomas, 1974]. On the other hand, Schrodt, Witt, and Turman (2007] found that in communication courses university students perceived the expert power base as the most used (average of two studies using PBM was 2.21 and 2.72; on a scale from never - 0 to always - 4], then legitimate (x = 1.93 and 2.33], reward (x = 2.26 and 1.75], referent (x = 1.94 and 1.75], and coercive power (x = 1.43 and 1.15]. Students perceived the use of so called harsh power mechanisms as inappropriate and reported discomfort when those were applied; on the other hand, the expert power was perceived as the best (Elias & Loomis, 2004]. Adaptation of Teacher Power Use Scale. 803 Referent, expert, and reward power (as prosocial forms of power] were positively correlated with cognitive and affective learning, and student motivation, whereas legitimate and coercive power (viewed by students as antisocial forms of power] were negatively associated with these learning outcomes (Kearney et al., 1984; McCroskey & Richmond, 1983; Plax et al., 1986; Richmond, 1990; Richmond & McCroskey, 1984]. Other studies reported a relation between teacher power and students' inappropriate behaviour (Myers, 1999; Tauber, 1999]. As for teaching assistants, higher power use was associated with lower argumentativeness (Roach, 1995a,b]. Students often communicated from the same power bases as they experienced social influence of their teachers (Golish, 1999; Golish & Olson, 2000], e.g. teachers' use of reward power was related to students' use of prosocial behaviour alteration techniques (BATs], and conversely, teachers' use of coercive power was associated with students' antisocial BATs (Golish & Olson, 2000]. Students' perceptions of teacher confirmation behaviours were positively associated with prosocial forms of power and negatively associated with antisocial forms of power (Turman & Schrodt, 2006]. No influence of teacher's gender on student's perception of their power was found (Elias & Mace Britton, 2005]. The relevance of these findings needs to be further supported with findings on different samples, i. e. above all on younger students and in different socio-cultural contexts. Sufficient findings regarding student teachers or novice teachers are missing as well as findings about perception of (student] teacher power by younger learners. Logically, the instruments measuring the phenomenon at these educational levels are missing as well; this regards international situation as well as the Czech Republic. 1.4 Aims of our study In accordance to this state of the art and needs of further theory and methodology development, our methodological study aims to adapt the Teacher Power Use Scale - TPUS (Schrodt, Witt, & Turman, 2007] for the specific context of student teachers in lower secondary classrooms. At the national level, our aim was also the adaptation of TPUS to Czech educational conditions. The adaptation was guided by the need of measurement of power bases of student teachers and lower secondary students, above all in our larger 804 Kateřina Vlčková, Jan Mareš, Stanislav Ježek research project on student teacher power (see Vlčková et al., 2015]. The measurement instrument had been missing not only in Czech but also in international conditions. The adaptation of TPUS to younger learners and students teacher's instruction had been missing in the theory research, and practice therefore it is important to find out whether the instrument can show a similar structure like in the case of teachers and tertiary students. Simultaneously there is only limited knowledge about the power bases student teachers use when they start their teacher profession and how students whom they teach perceive their power. Student teachers find themselves in a specific position at schools. In reality they are perceived by neither their students, nor their mentor teachers as regular teachers. Their power vastly depends on power relations set by their mentor teachers and school management and how they introduce them to the classes where they are learning to teach (more findings in Lojdová, 2015]. 2 Research design 2.1 Adaptation of measuring instrument Following the recommendations of Hambleton, Merenda, and Spielberger (2005], our adaptation of the Teacher Power Use Scale - TPUS (Schrodt, Witt, & Turman, 2007] with the aim to measure the perceived student teacher power bases included re-designing the instrument for lower secondary students (as opposed to university students] and student teachers (as opposed to university teachers], and for the Czech conditions (as opposed to the Anglo-Saxon context]. We found the original TPUS suitable for the intended adaptation (i.e. significantly different population and socio-cultural context] and as it is the newest and most advanced instrument measuring teacher power we decided to adapt it; however, some changes (as described below] had to be done. The adaptation included independent parallel translations, multiple cultural and linguistic adaptations, multiple expert reviews, and cognitive interviews with relevant respondents. The instrument was first adapted for lower secondary students and their teachers (Vlčková, Mareš, Ježek, & Šalamounova, 2016, in print], afterwards for measuring the student teacher power in lower secondary classrooms. For measuring the student teacher power, new items were developed for each power base according to theory (table 1]. Some items measuring teacher power were reformulated or removed. The changes (in comparison to the original TPUS] are presented in table 1. Adaptation of Teacher Power Use Scale. 805 Table 1 Adapted and Developed items of scale power bases: version for student teachers (Vlčková, Mareš, & Ježek)4 Power base Scale items Adapted from TPUS Newly created items; or alternative items to adapted or original item New items developed for the student teacher context Coercive 16, 18,29,33,35,36 06,26, 47 25,34 Reward 20,24,38, 48, 49 45 40,51 Referent5 1, 8, 13, 19, 23 10, 12, 15,32,41 4 Legitimate 7, 14, 22, 37, 39, 50 5, 11, 42 9, 17, 44 Expert 3,21,27,31,36 2,28,30, 43 - In contrast to the original TPUS, the items were reformulated from singular or plural passive (reporting about others in generally] to singular active form (reporting about oneself] which allows more psychometrically reliable respondent's answers. The scale version for adaptation consisted of 51 items (see appendix]: 11 items for coercive power base, 10 for expert, 12 for legitimate, 8 for reward, and 10 referent power base. The response scale was adapted for younger learners, i. e. reduced to 5 points (1-7 agree, 5-1 don't agree)6 in contrast to the original TPUS. The responses were put on a response scale of agreement instead of frequency because of the limited students' experience with the assessed student teacher. To assess the psychometric properties of the instrument we used confirmatory factor analysis (CFA] in Mplus and item analysis with internal consistency estimation. The scale items are available in the appendix (in Czech, as used in the research) or in table 2 (in English back-translation). One item from original TPUS was not (with the same meaning) included in our instrument: My teacher demonstrates commitment to the class by being authentic and genuine when interacting with students. Due to the introduction of this response scale change (from frequency to agreement response scale), the factor analysis model estimates may change. It may result in different psychometric properties of the model estimates compared to the original TPUS. This problem was considered in the analysis. The change of length of the response scale (from 7 point to 5 point) is considered not to have an effect on the estimates in our study. 806 Kateřina Vlčková, Jan Mareš, Stanislav Ježek 2.2 Data collection The scale was administered in 2014 to lower secondary classes/students (ISCED A2] taught by student teachers of master study programmes at the Faculty of Education, Masaryk University, Czech Republic. The student teachers were going through their second semester of teaching practice at schools. The student teachers administered the questionnaire themselves [90%] to their students at the end of their long term continual teaching practice, mostly after 3-6 or 10 lessons which they had taught in the class. In some cases [10%] the questionnaire was administered by a mentor teacher, class teacher or substituting teacher. The student teachers computed the results themselves and used them for self-reflection in the teaching practice seminars at the faculty. This helped us to assure better data quality for our research purposes as well. The data were collected as nonprobability sampling; most of the schools were from the city of Brno and its surroundings. 2.3 Sample The sample included 1686 students from 6th to 9th grade (12% in the 6thgrade, 23% in the 7th, 41% in the 8th, and 24% in the 9th grade]. The students were between 11 and 17 years old; the majority was 13-15 years old7. In total we analysed 96 classes/student teachers. On average, there were 18 students per class. 1306 students were taught by a female teacher, 380 students from our sample were taught by a male student teacher. 1560 [93%] students were from lower secondary schools (základní škola], 126 (7%] students were from lower secondary grammar schools (víceleté gymnázium]; i.e. in the sample there were 7 lower secondary academic schools and 58 lower secondary schools. The student teachers8 taught Civics (21 student teachers], Foreign Languages (18], Czech Language (14], Mathematics (14], History (9], Science (6], Health Education (5], Geography (4], Physics (3], and ICT (3]. 11-year-old students (1.73%), 12 (13.25%), 13 (25.67%), 14 (37.61%), 15 (20.54%), 16 (1.13%), 17 years old (.06%). The percentage of our sample of students in different subject was following: Foreign Languages (French 2% of students, English 1%, Russian 7%, German 4%) and Czechlanguage (15%), Mathematics (15%), Physic (3%), Informatics (3%), Science (8%), Health Education (7%), History (9%), Civics (23%), and Geography (4%). The classes in foreign languages are of the half size of standard classes; therefore there are fewer students compared to number of student teachers. Adaptation of Teacher Power Use Scale. 807 3 Findings 3.1 Confirmatory factor analysis A confirmatory factor analysis in Mplus, version 7.11 (Muthén & Muthén, 2013], was conducted to confirm the data structure suggested by theory of French and Raven [1959] and TPUS (Schrodt, Witt, & Turman, 2007], i.e. the existence of five power bases in student's perception of student teacher power use in the classes. The first five-factor model with all 51 items produced unsatisfactory fit indices. The model treated all items as continuous and used the MLR correction for deviations from normality. Then we allowed the residuals of items that explicitly mentioned the status of the student teacher to correlate. The resulting model (model 1, table 2] did not fit the data perfectly but at least allowed rough interpretation (chi2 = 5296, df = 1210, p < .001; CFI = .81; SRMR = .083; RMSEA = .045]. Model 1 had a number of deficiencies. Item C06 [When I do not hand in my homework to this teacher, I feel really bad.) had a minimum loading on the coercive factor while the modification indices strongly suggested its loading on the expert factor. Items L05 {This teacher says that teachers have to be obeyed.) and Lll {This teacher emphasizes that we have to obey at school.) did not load well on legitimate factor and were substantially locally dependent. Moreover, from the practical standpoint, the high correlation between legitimate and coercive factors (model 1 in table 3] suggested that the factors are nearly indistinguishable. A final argument for modification came from the analysis of the adapted TPUS for lower secondary teachers (Vlčková, Mareš, Ježek, & Šalamounova, 2016, in print], in which a four-factor model performed better. Thus we tested an alternative four-factor model (model 2, table 2] with the items of legitimate and coercive power loading on a common factor. We also removed the problematic items C06, L05 and Lll. While its fit indices were only marginally better (chi2 = 5241, df = 1210, p < .001; CFI = .82; SRMR = .082; RMSEA = .044], it enables for a much clearer interpretation. 808 Kateřina Vlčková, Jan Mareš, Stanislav Ježek Table 2 Standardized factor loadings in models 1 and 2s Item Model 1 loading Model 2 loading Factor: Referent power R01:1 have a lot in common with this teacher. .61 .61 R04:1 find this teacher nice because she has to learn as I do. .63 .55 R08: This teacher is friendly to me. .55 .46 RIO: This teacher is fair to me. .46 .62 R12:1 like to talk with this teacher also during breaks. .62 .61 R13:1 see this teacher also as a human, not just as a teacher. .61 .59 R15:1 think of this teacher as of a friend. .59 .64 R19: This teacher and I have the same point of view. .64 .60 R23:1 can see things from the same point of view as this teacher. .60 .66 R32:1 want to be like this teacher. .66 .59 R41: What this teacher says and does is very important to me. .59 .63 Factor: Expert power E02: When this teacher explains something while teaching, it is comprehensible. .67 E03: This teacher tells different news connected to the subject. .53 E21:1 think this teacher is great at teaching. .76 E27: When this teacher teaches, I know what to do and when to do it. .67 E28: This teacher is able to show me how I can practically use what I learn. .65 E30: This teacher understands what she teaches very well. .70 E31: When this teacher explains something, I can believe it. .69 E36: This teacher is a real expert in this subject. .69 E43: This teacher is able to explain to me anything I do not understand. .68 .67 .53 .75 .67 .65 .69 .69 .69 .68 Items are translated from original Czech items; they are meant only for information, not for use in research. Original scale items of the Czech version are available in the appendix. The questionnaire is presented in a version for a female student teacher. Adaptation of Teacher Power Use Scale. 809 Model 1 Model 2 Item loading loading Factor: Legitimate/ coercive Factor: Legitimate power LOS: This teacher says that teachers have to be obeyed. .26 L07: This teacher thinks that she can decide about everything when she is a teacher. .61 .56 L09: When this teacher does not like my behaviour, she cannot do anything about it anyway because she does not belong to our school. .43 .44 Lll: This teacher emphasizes that we have to obey at school. .24 (L14: This teacher has a reserved approach to me.) .34 .32 (L17:1 obey this teacher because our teacher has told me to do so.) .36 .33 (L22: This teacher says that it does not matter if I do not like something in the class.) .39 .39 L37: This teacher obviously shows that a teacher is something more than a student. .56 .49 (L39: This teacher suggests that what she wants is also supported by our teacher, headmaster or school rules.) .32 .26 L42: This teacher says things like: "I end the lesson, not you." .52 .52 L44: When this teacher does not like my behaviour, she cannot do anything about it because she is not a proper teacher yet. .46 .48 (L50: This teacher thinks that students have to obey because a teacher is an authority.) .33 .26 Factor: Coercive power C06: When I do not hand in my homework to this teacher, I feel really bad. -.01 C16: Although I criticize the rules, this teacher does whatever she wants anyway. .51 C18: When I do not work in the class as well as this teacher imagines, she embarrasses me in the class. .55 (C25: When I misbehave in the class of this teacher, she tells it to our teacher.) .40 C26: This teacher is angry with me when I express myself in the class that I do not agree with what she is saying. .57 (C29: When I do not follow this teacher's instructions, she punishes me.) .40 .52 .55 .38 .56 .37 810 Kateřina Vlčková, Jan Mareš, Stanislav Ježek Model 1 Model 2 Item loading loading C33: When I hand in my homework late, she behaves in such a way it makes me feel bad. .47 .44 C34: When I do not work as this teacher wants, she tells our teacher about it. .45 .44 C35: When I do not do in the class what this teacher wants, she looks at me angrily. .55 .53 C46: This teacher ignores me as a punishment when I do not work as she wants. .61 .60 C47: When I do not have my materials for the class, this teacher is upset. .54 .52 Factor: Reward power RW20: When I know something extra in the class, this teacher points it out. .52 .52 RW24: When I work well in the class, this teacher appreciates it. .64 .64 RW38: When I behave in the class as this teacher wants, she rewards me. .53 .53 RW40: When I work well in the class of this teacher, she tells our teacher about it. .73 .73 RW45: When I learn what is required, this teacher praises me. .51 .51 RW48: When I make an effort in the class, this teacher is nicer to me. .73 .73 RW49: When I do in the class what this teacher demands, she praises me for that. .51 .51 RW51: When I behave well in this teacher's class, she praises me to our teacher. .52 .52 Note. Crossed out items are problematical items removed from model 2. Items in the brackets are items with factor loading under .40. Table 3 reports the correlations among factors in model 1 and model 2. In model 2 legitimate and coercive power are integrated into one factor. Correlations between reward, expert, and referent power are also high. The authors of the original TPUS Schrodt, Witt, and Turman [2007] reported similar findings (see Discussion]. Adaptation of Teacher Power Use Scale. 811 Table 3 Correlations among factors in models 1 and 2 Model 1 Model 2 Legitimate/ Expert Legitimate Coercive Reward Expert coercive Reward Referent .77 -.17 -.18 .69 Referent .77 -.21 .69 Expert -.31 -.42 .70 Expert Legitimate/ -.43 .70 Legitimate .85 -.07 coercive -.12 Coercive -.09 Note. All correlations p < .01. 3.2 Scales reliability According to the C FA model 2 (table 2 and 3] we estimated internal consistency reliability for four power bases scales (the legitimate and coercive power bases were integrated into one factor]. Reliability was sufficiently high - over .80 in all cases (see table 4]. No exclusion of any item would improve the coefficient of reliability. The scale items can be seen in appendix (in Czech, as used in the study] or in table 2 (in English back-translation]. Table 4 Scales reliability and descriptive statistics (Model 2) Power base Cronbach's alpha Number of items Mean Median SD Expert .88 9 4.13 4.33 .75 Referent .86 11 3.31 3.36 .82 Legitimate/ coercive .83 20 2.40 2.35 .63 Reward .81 8 3.53 3.60 .80 3.3 Descriptive statistics All four power bases (except legitimate/coercive power base] were quite strongly (over point 3 at a scale from 1 to 5] perceived by students as used by the student teachers at their long term practice as measured by our adaptation of TPUS (table 4]. Students reflected as the most applied power base by the student teachers the expert power which means that student teachers were perceived as experts. The least applied in the classes was 812 Kateřina Vlčková, Jan Mareš, Stanislav Ježek legitimate/coercive power base (table 4]. As the instrument needs validation, these findings are preliminary. 3.4 Instrument shortening and validation of the short version The adapted student teacher scale - compared to the original TPUS - has a different number of items per scale (see table 4] caused above all by merging of original legitimate and coercive factors and by our preference of the criterion of content coverage (not primarily high internal consistency as in the original instrument]. In further development of the instrument some items can be excluded to shorten the adapted TPUS. The shortening can be suggested for the purpose of validation of our presented findings as well as for the practical reasons of instrument administration at schools. I.e. for further validation of the instrument the approach of excluding some items according to the CFA model 2 loadings (table 1] and scales reliability analysis can be applied. Exclusion of items with factor loadings under .40 can be realised (no item was under .60 and above .40 and at the same time decreasing the scale reliability]. This reduction regards actually only items from legitimate/coercive power base (e.g. L14, L17, L39, L50, D25, and D29]. After this reduction the scales reliability of legitimate/coercive power base remains high (a = .82]. From the referent power base scale the item R08 can be excluded because it seems that it uses an archaic Czech word (in English meaning "be forthcoming"] and not all students understand it precisely. These new scales of power bases in the Czech conditions need to be validated on another data sample, on which we are currently conducting a new CFA analysis. New findings will be published in the instrument manual (Mareš, Vlčková, Ježek, et al., 2016, in print]. 4 Discussion The aim of the study was to adapt a scale measuring perceived teacher power from Anglo-Saxon context to Czech condition, from tertiary level to lower secondary level students, and from teachers to student teachers. Confirmatory factor analysis was conducted and the Czech data basically supported the original model of relational power with five main power bases, with the difference that the structure of student teacher power bases seems to be less-dimensional in the perception of lower secondary students. Coercive and legitimate student teacher power bases were very highly inter-correlated, and many items of these scales tended to crossload among the two Adaptation of Teacher Power Use Scale. 813 factors. Our interpretation is that the two power bases are not differentiated by the lower secondary students. Alternatively the two factors may not be differentiated in student teachers' behaviour. Consequently a four factor model was suggested for the Czech conditions. These findings are similar to our findings concerning Czech teachers and their lower secondary students (Vlčková, Mareš, Ježek, & Šalamounova, 2016, in print]. Also in international findings these power bases were reported to be strongly correlated (e.g. Schrodt, Witt, & Turman, 2007]. The four factor solution (i.e. combining two latent constructs - legitimate and coercive power] was consistent with the test of PBM by Schrodt, Witt, and Turman (2007]. The four factor solution was also tested by Schrodt, Witt, and Turman (2007] in the development of the TPUS. These two power bases produced highest intercorrelations (.83] but the four-factor solution produced decline in model fit in their analysis, suggesting that the five-factor solution was most appropriate for their data. Our decision for the four-factor solution (not three-factor solution] was also indirectly supported by the structure of teacher power data from the Czech adaptation of Teacher Power Use Scale for lower secondary student and teachers (Vlčková, Mareš, Ježek, & Šalamounova, 2016, in print] where a four factor solution was found superior. Our observational data from a research project on student teacher power and open and thematic qualitative coding of the data (Vlčková et al., 2015] show that, for example, student teachers perceived as experts demonstrated higher referent power, and opposite; when student teachers were perceived as having high referent power they could motivate students with rewards more easily; and when student teachers were perceived as experts they gave students actually more rewards etc. Coercive power was enabled by legitimate power and was used in a milder modus in the context of student teachers since they are supervised by their mentor teacher and in our research also by cameras and the researcher in the classroom (Vlčková et al., 2015]. Lower secondary students were not able to distinguish the coercive (student] teacher power from the legitimate one. The superiority of the four-factor model on our data does not impact on the meaningfulness of the five power base theory. The findings of the factor analyses (compared to TPUS by Schrodt, Witt, and Turman, 2007] can be affected by our methodological changes of the original TPUS, such as items reformulation for younger students, development of new items (which were 814 Kateřina Vlčková, Jan Mareš, Stanislav Ježek more specifically formulated], stress primarily on complexity of the items not only high reliability, by response scale change, etc. Also, the students who assessed the student teachers did not know them for as long as their regular teachers; they were asked to report on their behaviour after a short time of their practice in their classes. As this scale was developed on the basis of the Czech adaptation of TPUS for teachers and then adapted for student teachers, the CFA showed that the newly suggested items specific for student teachers were not as fitting to the scales as the previous items because the new items were more specific about the situation or form of student teacher behaviour. This regards to some extent also (in accordance with the theory] newly developed items for the teacher scale, on which the student teacher scale was based. Therefore, some modifications of these items are desirable. The preliminary (the adapted scale needs validation] descriptive findings show that the expert power is perceived as the most used and the legitimate/ coercive power as the least used power. Student teachers were surprisingly (as they are just preparing for becoming teachers in the subj ects] very strongly perceived as experts. This corresponds to the findings of Schrodt, Witt, and Turman (2007] based on previous measure for teacher power (Roach's PBM, 1995a], only with the difference that legitimate power was perceived as the second most used one. It corresponds with the findings of McCroskey and Richmond (1983] as well - teachers and students saw the biggest proportion of power use to stem from reward, referent, and expert base. Nevertheless, contradicting results were reported by Jamieson and Tomas (1974] for high school students/teachers - the coercive and legitimate power bases were the most used. However, this might be caused by the socio-culturally specific situation of schooling in the U.S.A. at the beginning of 1970s. The situation of the student teachers during their long term teaching practice is very different from the situation of a regular teacher (Vlčková et al., 2015]. Student teacher power bases are only "borrowed" from the regular teacher (mentor] and not always fully handed over. For example, student teachers can give grades, but only the best grades functioning as a reward, but they don't write them to the students' record book as this is done only by the regular teacher, probably in order to keep the continuity of assessment clear during the school term. Another example is that students are often unsure if the student teacher can somehow punish them if they don't obey or don't Adaptation of Teacher Power Use Scale. 815 do their (home]work etc. This uncertainty is not only on the side of the students, but also on the side of the student teachers as well as their mentors (regular class teachers] because the power conditions are often set in the classroom only when a situation occurs and not in advance. 5 Conclusion The presented study attempted to contribute to the field of teacher, specifically student teacher power measurement in the (Czech] classes and its theory by adaptingthe TPUS (Schrodt, Witt, &Turman, 2007] measuringthe five power bases suggested by French and Raven (1959]. In this study we presented the above mentioned instrument adaptation for international academics in English to demonstrate that the adaptation of the TPUS to younger students as well as student teachers is possible and can bring reliable results.10 For Czech scientists also the original Czech adaptation version for their use is published in the appendix. The adapted instrument can be used for self-evaluation by student teachers during their teaching practices in schools as well as by teacher educators and school mentor teachers to support the student teachers educational expertise and their reflective practice. For Czech student teachers, teachers, and teacher educators we are preparing an instrument manual (Mareš, Vlčková, & Ježek, etal., 2016, in print] for both instruments adapted by us: Student Teacher Power Use Scale - Czech version (Báze moci: verze pro studenty učitelství - BMS] and Teacher Power Use Scale - Czech version (Báze moci: verze pro učitele - BMU]. For further research, it is desirable to test the Student Teacher Power Use Scale - Czech version developed by us on a different set of data for its structure and for its fit to Czech data. The adaptation of the Student Teacher Power Use Scale - Czech version as well as the TPUS to the educational context of other countries can be beneficial as well. Acknowledgement The scale items development was co-operated by dr. Zuzana Šalamounova, dr. Kateřina Lojdová, dr. Josef Lukas, dr. Tomáš Kohoutek, and Mgr. Jarmila Bradová from Masaryk University. Data collection was supported by 10 A successful adaptation of TPUS to Turkish college condition was reported by Ózer et al. (2014). Findings are preliminary; the authors conducted only exploratory factor analysis. 816 Kateřina Vlčková, Jan Mareš, Stanislav Ježek dr. Kateřina Lojdová, dataset creation, translation of scale items by Mgr. Kateřina Švej dikova, and English correction of the paper by Mgr. Kateřina Švejdíková and dr. 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Authors Kateřina Vlčková, Masaryk University, Faculty of Education, Department of Education, Poříčí 31, 603 00 Brno, Czech Republic, e-mail: vlckova@ped.muni.cz Jan Mareš, Masaryk University Faculty of Education, Department of Psychology Poříčí 31, 603 00 Brno, Czech Republic, e-mail: mares@ped.muni.cz Stanislav Ježek, Masaryk University Faculty of Social Sciences, Institute for Research of Children, Youth and Family/Department of Psychology Joštova 218/10, 602 00 Brno, Czech Republic, e-mail: jezek@fss.muni.cz Adaptation of Teacher Power Use Scale. 819 Adaptace dotazníku Teacher Power Use Scale na žáky druhého stupně základních škol a studenty učitelství Abstrakt: Moc lze definovat jako schopnost ovlivnit názory, hodnoty a jednání ostatních. Jasně stanovené mocenské vztahy ve třídách umožňují realizaci kurikulárních cílů. Začínající učitelé často bojují s ustanovením těchto vztahů. Vlivná typologie sociální moci jakožto vztahového jevu autorů Frenche a Ravena (1959) rozlišuje donucovací, odměňovací, legitimní, referenční a expertní bázi moci učitele. V této metodologické studii popisujeme adaptaci nástroje Teacher Power Use Scale -TPUS (Schrodt, Witt, & Turman, 2007) určeného k měření těchto bází moci. Adaptace se zaměřuje na úpravu dotazníku specificky pro český kontext a také pro studenty učitelství a jejich žáky na druhém stupni základních škol (oproti původní verzi, která byla zaměřena na univerzitní učitele a jejich studenty v anglosaském kontextu). Dostupný výzkumný vzorek sestával z 1686 žáků z 96 tříd druhého stupně základních škol vyučovaných 96 studenty učitelství v průběhu jejich dlouhodobé praxe. Získaná data v zásadě podporují teorii Frenche a Ravena a původní TPUS. Nicméně vnímání bází moci studentů učitelství je u žáků druhého stupně jednodušší. Báze legitimní a donucovací silně korelovaly, jinými slovy byly žáky vnímány jako jeden faktor. Toto zjištění odpovídá výsledkům výzkumu bází moci učitele zkoumaných na jiných vzorcích žáků v českém kontextu. Klíčová slova: báze moci, Teacher Power Use Scale, student učitelství, druhý stupeň základních škol, adaptace výzkumného nástroje, konfirmační faktorová analýza 820 Kateřina Vlčková, Jan Mareš, Stanislav Ježek Appendix Items ofadapted TPUSfor student teachers (in Czech)11 Expertní moc (Expert power) E02: Když tato učitelka ve výuce něco vysvětluje, je to srozumitelné. E03: Tato učitelka říká různé novinky, které souvisí s vyučovacím předmětem. E21: Podle mě tahle učitelka umí skvěle učit. E27: Když tahle učitelka učí, vím, co a kdy mám dělat. E28: Tato učitelka dovede ukázat, jak můžu učivo prakticky použít. E30: Tahle učitelka velmi dobře rozumí tomu, co učí. E31: Když tahle učitelka něco vysvětluje, dá se tomu věřit. E36: Tato učitelka je skutečným odborníkem na tento předmět. E43: Tato učitelkami umí vysvětlit to, čemu nerozumím. Legitimní moc (Legitimate power) L05: Tato učitelka říká, že učitelé se musí poslouchat. L07: Tahle učitelka žije v tom, že musí být vždycky po jejím, když je učitelka. L09: Když se téhle učitelce nelíbí, jak se chovám, stejně nemůže nic dělat, protože nepatří k nám do školy. Lil: Tato učitelka dává najevo, že ve škole se musí poslouchat. (L14: Tahle učitelka se ke mně chová s odstupem.] (L17: Tuhle učitelku poslouchám, protože mi to řekla naše paní učitelka.] (L22: Tato učitelka říká, že i když se mi ve výuce něco nelíbí, je to jedno.] L37: Tato učitelka dává najevo, že učitel je něco víc než žák. (L39: Tahle učitelka naznačuje, že to, co chce ona, podporuje taky naše paní učitelka/učitel, ředitel nebo řád školy] L42: Tahle učitelka říká věci typu: „Zvoní pro mě, ne pro vás." L44: Když se téhle učitelce nelíbí, jak se chovám, stejně nemůže nic dělat, protože ještě není učitelka. (L50: Podle této učitelky mají žáci poslouchat, protože učitel je autorita.] Donucovací moc (Coercive power) C06: Když téhle učitelce nedonesu úkol, cítím se fakt špatně. C16:1 když kritizuji pravidla, tahle učitelka si stejně udělá, co chce. Version for a female student teacher. Crossed out items are problematical items removed from model 2. Items in the brackets are items with factor loading under .40. These items could be in further research not included. Adaptation of Teacher Power Use Scale. 821 C18: Když mi to v hodině nejde tak, jak si tahle učitelka představuje, před celou třídou mě ztrapní. (C25: Když ve výuce téhle učitelky zlobím, řekne to na mě naší učitelce.] C26: Tahle učitelka se na mě naštve, když dám v hodině najevo nesouhlas s tím, co říká. (C29: Když neplním pokyny téhle učitelky, potrestá mě.] C33: Když téhle učitelce donesu pozdě úkol, chová se tak, že se cítím špatně. C34: Když nepracuji tak, jak by si tahle učitelka přála, řekne to naší učitelce. C35: Když v hodině nedělám to, co tato učitelka chce, naštvaně na mě kouká. C46: Tahle učitelka mě za trest přehlíží, pokud nepracuji tak, jak chce. C47: Když nemám pomůcky, tahle učitelka je naštvaná. Odměňovací moc (Reward power) RW20: Když vím ve výuce něco navíc, tahle učitelka to vyzdvihne před ostatními. RW24: Když mi to v hodině jde, tato učitelka to ocení. RW38: Když se v hodině chovám tak, jak tato učitelka chce, nějak mě odmění. RW40: Když mi to v hodině téhle učitelky jde, řekne to naší učitelce. RW45: Když se naučím, co mám, tato učitelka mě pochválí. RW48: Když se v hodině snažím, je na mě tato učitelka hodnější. RW49: Když v hodině dělám, co tahle učitelka chce, pochválí mě za to. RW51: Když jsem ve výuce téhle učitelky hodný/á, pochválí mě naší učitelce. Referenční moc (Referent power) R01: S touto učitelkou mám hodně společného. R04: Tahle učitelka je mi sympatická, protože se musí učit do školy stejně jako já. ((R08: Tato učitelka je vůči mně vstřícná.]]12 R10: Tato učitelka se mnou jedná na rovinu. R12: S touto učitelkou si rád/a povídám i o přestávce. R13: Tuto učitelku vidím i jako člověka, nejen jako učitelku. R15: Tuhle učitelku beru jako kamaráda. R19: Já a tato učitelka máme stejný pohled na věc. R23: Na věci se dokážu dívat stejně jako tato učitelka. R32: Chtěl/a bych být jako tato učitelka. R41: To, co říká a dělá tato učitelka, je pro mě důležité. Item R08 in the double brackets is an item with problematic interpretation by students.