Harvard Psychological Studies, Volume 1 / Containing Sixteen Experimental Investigations from the Harvard Psychological Laboratory.

by Unknown

		To Blue.	Return from Blue.	To Green.	Return from Green.	To Yellow.	Return from Yellow.	To Red.	Return from Red.
From	blue,			2.26	1.52	2.11	1.50	2.12	1.39
"	green,	2.38	1.53			2.16	1.64	2.33	1.57
"	yellow,	2.49	1.75	2.61	1.59			2.52	1.68
"	red,	2.67	1.52	2.58	1.68	2.27	1.62
Average,		2.52	1.60	2.48	1.59	2.17	1.58	2.33	1.55

Changes to a color from a presented color.			Returns from a color to a presented color.
216 movements.			216 movements.
From presented	yellow,	2.52	To presented	yellow,	1.67
"	red,	2.49	"	red,	1.61
"	green,	2.29	"	green,	1.58
"	blue,	2.16	"	blue,	1.47
Average,		2.37	Average,		1.58

Changes to a color from a presented color.			Returns from a color to a presented color.
216 movements.			216 movements.
To	blue,	2.52	From	blue,	1.60
"	green,	2.48	"	green,	1.59
"	red,	2.33	"	yellow,	1.58
"	yellow,	2.17	"	red,	1.55
Average,		2.37	Average,		1.58

The six subjects fall into two groups—three, H., I., and K., taking longer than the other three. As in the previous experiment H. was markedly longer than any of the others.

There were seventeen hundred and twenty-eight changes in all, including returns to the original color. There were two hundred and sixteen changes from each of the four colors as presented, to each of the other three and, of course, the same number of returns to the presented color.

The change to blue from the other presented colors was the most difficult and the change to yellow was the easiest.

The averages (216 exp. each) are,

		Sec.
To	blue,	2.55
"	green,	2.48
"	red,	2.33
"	yellow,	2.17

The returns to the presented colors did not differ greatly from each other, the averages (216 exp. each) being: