SEX DIFFERENCES 



81 



were two females between 180 and 200 seconds ; one between 200 and 

 220 seconds; one each between 240 and 260, and 260 and 280 sec- 

 onds ; and finally one female that failed completely. 



10 



Test 



20 60 100 

 No. 03 SCCONDS 



180 220 260 300 3W 360 



Test oj Tew TriAl& 



020 60 100 m ISO 220 260 300 3W 360 



"ReteNtioN Test 



20 60 100 m 160 220 &0 300 3W 3401 



Multiple Choice Test 



20 60 /OO m J80 2^0 260 300 3W 360 



FIG. 8. Distribution Curves for the Males and Females for all Tasks. In 

 each case the number of animals is given by the ordinate, while the abscissae 

 represent the number of seconds The males are represented by the solid lines 

 and the females by the broken lines. 



