In the study, 20 infants were presented with both plain and patterned figures. The amount of time spent in looking at each type of stimulus (in seconds) was measured. In addition, the race of the infants and the age (in days) were recorded.
a) Which type of stimulus did the infants prefer?
b) What were the two variables measured in the experiment?
c) How many infants were included in the study?
d) What were the ethnicity and age of the infants studied?