HCI
Human Computer Interaction
Bi9100
Ergonomics and Applied Anthropology
Concept of HCI
• 1980‘s
• Specialty area in computer science;
cognitive science/human factors
• Usability for non-specialists – personal
computers
HCI
• Graphical interface – control – design
• E-mails, social networks –
communication through computers
• Diversification and ubiquity –
notebooks, handheld devices
HCI
• Ergonomic appliance design
HCI
• Communication
• Perception
• Organization
HCI
• Effective application design
HCI
• User requirements
• Questionnaire
• Interview (structured, semistructured)
Questionnaire method
• Preferences
• Behaviors
• Facts
• Question types
• Dichotomous – two options
• Polytomous – more than two (ordered or unordered options)
• Continuous – scale (Likert scale – Strongly agree---Strongly disagree)
• Open ended questions (incl. sentence completion)
• Face to face (more like a structured interview)
• Paper and pencil/computerized
Questionnaire construction
• Statements used should be clear, concise and interpreted in the same
way by members of the sample of interest
• After a list of possible answers include an open answer
• One aspect of the construct per item
• Positive stetements, no double negatives
• Only one question per item
• Avoid bias, leading questions
• Question flow – from leat to most sensitive, general to specific,
factual/behavioral to attitudinal
• Logical sequence
Screens
Warm-ups
Transitions
Skips
Difficult
Classification
Questionnaire construction
Standardized interview
• Structured interview
• Often fixed choice of answers
• Semi-structured interview
• Open, allowing new ideas
• Framework of themes
• Pre-arranged design – interview guide
• Time consuming analysis