Instructions for Rating Darkness of Grays


Please Rate the Lightness or Darkness of each of the gray squares, compared to each other. Rate the least dark stimulus (A) as very very light, and rate the darkest square (G) as very very dark. Rate the others in between, so that differences in ratings reflect subjective differences in darkness. When you click your judgment, the dot will jump to your selected rating.

1. A.
very very light very very dark

2. B.
very very light very very dark

3. C.
very very light very very dark

4. D.
very very light very very dark

5. E.
very very light very very dark

6. F.
very very light very very dark

7. G.
very very light very very dark

8. Are you Male or Female?
Female
Male
9. What is your age? years.
10. How many years of Education have you completed?
Put 12 for High School Diploma.
Put 16 for college diploma (bachelor's degree, B.A., B.S., etc.).
Put 20 for doctorate degree (Ph.D., M.D., etc).
Education:
11. Nationality (country of birth):
12. COMMENTS:

Please check your answers. When you are done, push the button below.

Thank You!