In 1973 ________ was removed from the list of mental illnesses

Perceptions differ from sensations in that:

a. perceptions depend as much on prior experience as they do on neural cues traveling between receptors and the brain. b. perceptions are purely psychological, whereas sensations are purely neural. c. each sensation is actually a large set of perceptions. d. sensations depend mostly on learning, whereas perceptions are innate processes.

During which specific period of pregnancy will teratogens have their most negative impact?

a) the first trimester b) the embryonic stage c) the germinal stage d) the second trimester