One way to think of the mean of a distribution is as the ______ of the distribution.

Proponents of the ____ model believe that health problems such as ulcers and asthma are from unconscious psychological conflicts.

a. biomedical b. biopsychosocial c. psychoanalytic d. psychoneuroimmunological

The neural "pruning" that takes place during infancy and toddlerhood results in:

a. a loss of about 10% in the weight of the typical brain b. a loss of many of the neural connections that were present at birth c. severing the connection between left and right hemispheres that was present during the prenatal period of development d. the near-total separation of the brain's cortex and other brain structures that lie below it