Your little sister picks up objects, feels every part of them, and then puts them in her mouth. What stage of Jean Piaget's model of cognitive development does this behavior suggest?

In the United States today, death rates for men typically equal the death rates for women throughout the adult years

Indicate whether the statement is true or false

Rowland's (1989) finding that female sticklebacks preferred dummy males who were larger than normal male sticklebacks fits ethological theory because it shows how:

a. mate size is important in the mating behavior of sticklebacks b. preference for a superoptimal male stimulus does not provide advantages c. organisms' reactions to environmental stimuli are learned d. males are able to interact with females