Age
| Range | below 10 | 10 - 20 | 20 - 30 | 30 - 40 | 40 - 50 | above 50 |
| Subject ID | 7,8,9,10,11,12,16,17 | 1,4,6,13,14,18 | 15 | 2,3,5 | ||
| Number | 0 | 8 | 6 | 0 | 1 | 3 |
Gender
| Male | Female | |
| Subject ID | 1,3,4,7,8,9,10,11,12,13,14,15,17,18 | 2,5,6,16 |
| Number | 14 | 4 |
Education
| elementary | high school | university/college | graduate/professional | |
| Subject ID | 5,7,9,10,11,12,16,17 | 1,2,4,8 | 3,6,13,14,15,18 | |
| Number | 0 | 8 | 4 | 6 |
Native English speaker
| yes | no | |
| Subject ID | 1,4,5,6,7,8,9,10,11,12,15,16,17 | 2,3,13,14,18 |
| Number | 13 | 5 |
Hand
| left-handed | right-handed | |
| Subject ID | 17 | 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,18 |
| Number | 1 | 17 |
Average time spent on computers
| less than one hour | one to less than 4 hours | 4 to less 10 hours | over 10 hours | |
| Subject ID | 2,5 | 10 | 3,6,8,9,12 | 1,4,7,11,13,14,15,16,17,18 |
| Number | 2 | 1 | 5 | 10 |
Palm Pilot Experience
| 1(never) | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9(always) | NA | |
| Subject ID | 1,3,5,10,12,13,14,18 | 6,9 | 8,15,17 | 4 | 7,11,16 | 2 | ||||
| Number | 8 | 2 | 3 | 1 | 0 | 0 | 0 | 0 | 3 | 1 |
Rocket Book Experience
| 1(never) | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9(always) | NA | |
| Subject ID | 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18 | |||||||||
| Number | 18 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Laptop Experience
| 1(never) | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9(always) | NA | |
| Subject ID | 5,13 | 8,14,18 | 10 | 2,9 | 7,12,15 | 4 | 6 | 3,11 | 1,16,17 | |
| Number | 2 | 3 | 1 | 2 | 3 | 1 | 1 | 2 | 3 | 0 |
Correcting lens
| glasses | contact lens | none of above | |
| Subject ID | 2,4,5,7,10,11,12,13,14,16,18 | 1,6,15 | 3,8,9,17 |
| Number | 11 | 3 | 4 |