Once a personality measure has been validated, it need never be revised and/or revalidated

A key effect of ghrelin that results in the stimulation of eating is to

A) cause the stomach to release less ghrelin. B) activate CCK receptors in the brain. C) activate NPY neurons within the hypothalamus. D) decrease the release of NPY in the hypothalamus. E) increase the entry of insulin into the brain.

Marney is studying the relationship between the rate of teen pregnancies in U.S. high school students and the availability of contraceptives. She selects a sample composed of teens from a local high school. Marney's sample may not be generalizable because it is not ____.?

a. ?double-blind b. ?biased c. ?representative d. ?dependent