Because they have no control over the situation, researchers doing naturalistic observation cannot reach conclusions about _____ relationships

Barn owls are often used in auditory research on sound localization because they have

A) excellent sound localization ability. B) large ears. C) a large auditory cortex. D) poor vision. E) both B and C

Which of the following statements most accurately reflects the influence of a woman's emotional state on her pregnancy and delivery?

a. A mother's anxiety and irritability help speed up labor. b. Women who are experiencing marital difficulties are likely to have shorter labors. c. Anxious and irritable women are more likely to experience labor complications. d. Extreme emotions of joy and elation are just as disruptive as anxiety and depression.