A STUDY OF THE BEHAVIOR OF THE PIG 



191 



Problem 1. First Mechanism at the Subject's Right 



Settings Doors open No. of doors open No. of right door 



1 1.2.3 3 1 



2 8.9 2 8 



3 3.4.5.6.7 5 3 



4 7.8.9 3 7 



5 2.3.4.5.6 5 2 



6 6.7.8 3 6 



7 5.6.7 3 5 



8 4.5.6.7.8... 5 4 . 



9 7.8.9 3 7 



10 1.2.3 3 1 



Total 35 



Problem 2. Second Mechanism at the Subject's Left 



Settings Doors open No. of doors open No. of right door 



1 7.8.9 3 8 



2 1.2.3.4 4 3 



3 2.3.4.5.6.7* 5 6 



4 1.2.3.4.5.6 6 5 



5 4.5.6.7.8 5 7 



6 1.2.3 3 2 



7 2 3 4.5 4 4 



8." .'.'.'.'.'.'.'.'.'.'.'.'.' '. '. .1.2.3*. 4.5.6. 7.8.9! '.'.'. .9. '.'.'.'.'.'.'.'. '.'.'.'.'.'.'. '.'.8 



9 1.2.3.4 4 3 



10 3.4.5.6.7.8 6 7 



Total 50 

 Changed from 3.4.5.6.7 to 2.3.4.5.6.7 after about one hundred trials. 



Problem 3. 



Setting 



8 



9 



10 



Alternately the First Mechanism at Subject's Right and the 

 First at Its Left 



Doors open No. of doors open No. of right door 



Total 50 



