

96 



HAROLD C. BINGHAM 



TEST SHEET 2 



Title of investigation, Size: O 28+ — O 7+ 

 Experimented on, 16 



Harvard Psychological Laboratory, March 6, 1912 

 Record Sheet 1 ; Series 16 



8-2-28.2 



this time was at the left, the chick turned itself completely 

 around, counter clockwise, and came up to the right stimulus. 

 The third test shows that No. 16 made two errors for each of 

 which it was shocked. Test 9 indicates where the chick made 

 two complete turns, — one counter clockwise from the right 

 compartment which this time is at the left side, and one clock- 

 wise turn frcm the wrong or right hand compartment. 



These two test sheets have been selected with an idea of 

 showing as marked contrast as possible, that the reader may 

 see how important is the chick's behavior during each test and 

 series. The first shows that No. 21 had no difficulty in choosing 

 the proper stimulus. The second indicates that No. 16 was 

 comparing both stimuli and using considerable care in choosing, 

 although it made two errors. The choice record would indicate 

 poor discrimination, but the behavior shows that the bird was 

 really discriminating. The time contrast also stands out in the 



