Who developed the learned helplessness model of depression?

Chronic and excessive use of alcohol or benzodiazepines may lower the brain's production of:

a.) Endorphins b.) Dopamine c.) GABA d.) Anandamides

Starting in 2007, the only FDA-approved OTC weight-control ingredient is

A. PPA. B. caffeine. C. orlistat (alli). D. CCK.