Information Technology Reference
In-Depth Information
CHAPTERĀ 7
Behavioral and
Physiological Metrics
163
CONTENTS
7.1 OBSERVING AND CODING UNPROMPTED VERBAL EXPRESSIONS
163
7.2 EYE TRACKING
165
7.2.1 How Eye Tracking Works
165
7.2.2 Visualizing Eye-Tracking Data
167
7.2.3 Areas of Interest
170
7.2.4 Common Eye-Tracking Metrics
172
7.2.5 Eye-Tracking Analysis Tips
174
7.2.6 Pupillary Response
175
7.3 MEASURING EMOTION
176
7.3.1 Affectiva and the Q-Sensor
176
7.3.2 Blue Bubble Lab and Emovision
179
7.3.3 Seren and Emotiv
180
7.4 STRESS AND OTHER PHYSIOLOGICAL MEASURES
182
7.4.1 Heart Rate Variance
182
7.4.2 Heart Rate Variance and Skin Conductance Research
183
7.4.3 Other Measures
183
7.5 SUMMARY
185
During a usability study, most participants do much more than complete tasks,
respond to questions, and fill out questionnaires. They may laugh, groan, smirk,
grimace, smile, fidget in their chair, look aimlessly around the room, or drum
their fingers on the table. They feel a wide range of emotions such as stress,
excitement, frustration, and surprise. Certain elements of the product grab their
attention, while others are completely ignored. Many of these behaviors and
emotions are measurable and offer valuable insights into the user experience of
the product being tested. This chapter discusses metrics related to unprompted
verbal expressions, eye tracking, emotional engagement, and stress.
7.1 OBSERVING AND CODING UNPROMPTED VERBAL
EXPRESSIONS
Unprompted verbal expressions provide valuable insight into a participant's
emotional and mental state while they are using a product. The participant will
Search WWH ::
Custom Search