The variable manipulated by the experimenter is called the

According to the concept of kin selection, you are more likely to behave altruistically

toward a. a brother over a sister. b. a cousin over a brother. c. any sibling over your parents. d. a sister over a cousin. e. an aunt or uncle over a sibling.

To encourage youth to participate, adults (and parents) need to have ________________ expectations for children

Fill in the blank(s) with correct word