Lisa Serbin and Her Colleagues Were Interested in Determining Whether

Lisa Serbin and her colleagues were interested in determining whether 12-, 18-, and 23-month-old infants would show different visual preferences for male- and female-stereotyped toys. Their results were as follows:

A) At these young ages, they did not yet see differences in visual preferences
B) At 18 months of age boys and girls both preferred to look at dolls more than vehicles
C) By 18 months of age, girls preferred to look at dolls and boys preferred to look at vehicles
D) Differences between boys and girls only became apparent at 23 months of age