Procedure for Part I - Overlay Test and Tactile Icon Evaluation at ABVI
The steps we followed for Part I of the study - overlay test and tactile icon evaluation at the Association for the Blind and Visually Impaired (ABVI). Participant data and test comments/discussions were recorded by hand on prepared test forms. Except for the finger measurements and a couple pictures, no other audio or video was recorded.
Welcome - Welcome test participant, introduce test administrators.
Test Overview - Explain the study and the test procedure. Answer any questions.
Consent Form - Test participant signs the consent form. Provide a signature plate to guide the test participant's pen to the form's signature area.
Record Test Participant Data - Age group, visual ability, braille literacy.
Finger Measurement - Measure the width of the right hand index finger just below the start of the finger nail. Place the test participant's right index finger on grid paper and snap a picture.
Test Fixture Overview (sitting) - Provide an overview of the test fixture and the layout of the buttons using the touchplate overlay.
Test Fixture Familiarization/Training (standing) - Introduce the test fixture and the two test scenarios - heating a beverage and finding a button
Overlay Tests - for each of the four overlays (standing)
----- Heat a Beverage Scenario
----- Find a Button Test
----- Likeability/Acceptability Questions
Tactile Icon Evaluation (sitting) - Test participants review and comment on variations of six different tactile icons.
Discussion - Followup discussion on the procedure, overlays and their personal experiences with home appliances.
Conclusion - Test participants are thanked for their time and given an envelope that includes a thank you letter and financial compensation.