1. Afterimage test The experiment is very brief, funny and simple.
There are 10 short tests, each composed of three slides
For each test, you must look at the first slide for secs. It’s better if you fix your gaze on the black cross. Then switch to the following slide.
Which hues do you see? (for a short time you will see a subjective color)
To provide result, look at the third slid and write down which square has a color closer to the one you just saw
IF YOU ARE NOT SURE, YOU MAY REPEAT THE PROCEDURE AS MANY TIMES AS YOU LIKE

2. Afterimage test The experiment is very brief, funny and simple.
There are 10 short tests, each composed of three slides
For each test, you must look at the first slide for secs. It’s better if you fix your gaze on the black cross. Then switch to the following slide.
Which hues do you see? (for a short time you will see a subjective color)
To provide result, look at the third slid and write down which square has a color closer to the one you just saw
IF YOU ARE NOT SURE, YOU MAY REPEAT THE PROCEDURE AS MANY TIMES AS YOU LIKE

3. Afterimage test The experiment is very brief, funny and simple.
There are 10 short tests, each composed of three slides
For each test, you must look at the first slide for secs. It’s better if you fix your gaze on the black cross. Then switch to the following slide.
Which hues do you see? (for a short time you will see a subjective color)
To provide result, look at the third slid and write down which square has a color closer to the one you just saw
IF YOU ARE NOT SURE, YOU MAY REPEAT THE PROCEDURE AS MANY TIMES AS YOU LIKE

4. Group 1

5. Test 1

8. A B

9. Test 2

12. A B

13. Test 3

16. A B

17. Test 4

20. A B

21. Group 2

22. Group 2

23. Group 2

24. Group 2

25. Test 5

28. A B

29. Test 6

32. A B

33. Test 7

36. A B

37. Group 3

38. Group 3

39. Group 3

40. Group 3

41. Test 8

44. A B

45. Test 9

48. A B

49. Test 10

52. A B

53. Summary of used colors # Stimulus Background A B Prediction Correct 1
(255, 0, 0)
(128,128,128)
( 64,128,128)
(128,192,128) 2
(0,255,255)
(128, 64,128)
(128, 64, 64) 3
(0,255, 0)
(192,128,128) 4
(255, 0,255)
( 64,128, 64) 5
( 255, 0, 0)
(192,192,128)
(192,255,128) 6
(255, 0, 0)
(192,128,192)
(192,192,192)
(128,128,192) 7
(128,192,192)
( 64,192,192)
(128,255,192) 8
(255,128,192)
(192, 64,192) 9 10
(255,192,128)