Suppose that a parent is watching a child playing enthusiastically with a toy that is strongly associated with the other gender. In which of the following situations is the parent most likely to produce a strong negative reaction?

University of British Columbia researchers Pinel et al (2000 ) postulate that the main difference between starving individuals and those with anorexia is

a) Neurochemical imbalances in the brain. b) Lack of positive incentive value for eating. c) Absence of great interest in food. d) Anorexics increase their activity in response to starvation whereas starving individuals decrease their activity.

The end of the rising phase of an action potential occurs when the

A) sodium channels close. B) sodium channels open. C) potassium channels open. D) potassium channels close. E) both A and D