Figure 2

Dietary soy phytoestrogens influence on acquisition (shaping to criterion) of the radial arm maze. Male and female (experiment 3) Long-Evans rats received life-long exposure to a high-phytoestrogen containing diet (Phyto-600 diet, from conception to adulthood). Number of trials (Mean + SEM; one trial per day) required for males and females to reach a set criterion level of performance in the eight-arm radial maze by Long-Evans rats. ^* males reached criterion significantly earlier than females (p < 0.05)