Variables GRP. A GRP. B GRP. C GRP. D
SEX        
MALE (n) 25 25 25 25
FEMALE (n) 25 25 25 25
AGE        
Mean+S.D 23.8+1.3 23.4+1.4 23.5+1.6 23.8+1.5
Range 22-34 22-34 22-34 22-34
Table 1: Descriptive statistics for subjects.