Baby Genevieve has many colorful toys and books to look at but her very favorite sight is her big brother's face. She is demonstrating the universal principle of infant perception called

In Harry Harlow's (1958) classic study on attachment, which of the following "mothers" did the baby monkeys prefer?

a. terry cloth b. wire mesh c. cotton balls d. wood

Baby Lindsay has combined her reaching, grasping, and sucking schemes into a higher-order scheme that allows her to reach for her pacifier and put it into her mouth. This achievement is an example of

A) equilibrium. B) organization. C) assimilation. D) accommodation.