Baby Waldo is twisting and turning triangles, circles, and squares to fit them into his shape-sorter toy. According to Piaget, this behavior is best described as a __________ circular reaction

Obsessive-compulsive personality disorder is MOST common among:

A) unemployed women. B) women with jobs. C) unemployed men. D) men with jobs.

In hopes of better understanding how glia affect brain repair, Dr. Jennings develops a special mouse lacking specific types of glia. In her experimental design, Dr. Jennings injures the brain of this special mouse and monitors neuronal repair. What is Dr. Jennings likely to observe?

a. Action potentials can no longer propagate in unmyelinated nerves. b. Cell debris from damaged neurons is not cleared. c. A blood-brain barrier is formed in response to the injury. d. Neurons undergo hypermyelination.