An Evaluation Framework
Lecture 21 - HCI
1
Think Aloud
• Information seeking behavior
• Involve subject in actual or predefined tasks
• Subject engaging in tasks
explains what they are doing and why
what they are thinking
how they feel
• Researcher observes the process, take notes
• Prompt subject to verbalize
Engaging in the process
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Allow subject leeway-don’t guide
Prompt subject to talk as necessary
Ask clarifying questions
Take notes
Persona
• hypothetical descriptions of specific potential user
• Based on knowledge of real users
• Precise way of thinking and communicate how the
user behaves, what they want to accomplish
• Used to role play through design process
Constructing Persona
• Identify behavioral variables
Activities
Attitude
Aptitude
Motivation
Skill
• Identify significant behavior patterns
• Synthesize characteristics and relevant goals
• Check for completeness and redundancy
• Designate persona types(primary and secondary)