Table 4 Testlets variables for Performance + Squinting and Satisfaction + Squinting used for nominal IRT
Squinting | |||
|---|---|---|---|
Yes, but I still could not read any of the text | Yes, and squinting helped me read some or all of the text | No, I did not squint | |
Performance | |||
“I could not read any of the text due to problems seeing up close” | 1 | 3 | 5 |
“Poor” | 2 | 3 | 6 |
“Fair” | 2 | 4 | 7 |
“Good” | 2 | 4 | 8 |
“Very Good” | 2 | 4 | 9 |
“Excellent” | 2 | 4 | 10 |
Satisfaction | |||
“Very dissatisfied” | 1 | 2 | 4 |
“Dissatisfied” | 1 | 2 | 5 |
“Neither satisfied nor dissatisfied” | 1 | 3 | 6 |
“Satisfied” | 1 | 3 | 7 |
“Very satisfied” | 1 | 3 | 8 |