A researcher conducts an experiment to establish a relationship between a chess player's mental stability and his performance in a game. He finds that the two have a Pearson product-moment correlation coefficient value of +1.00. This means the two variables—mental stability and performance—have a _____ relationship.

Extending ethology to humans, researchers have investigated

A) bonding between human infants and their mothers. B) blood flow through the brain as a person engages in tasks. C) the way that children perceive, store, and retrieve information. D) the mental schemes that children use to understand the world.

By definition, a remarried couple that has at least one stepchild living with them is called a __________ family

a) multigenerational b) single-parent c) blended d) mixed