Disorganized speech and thought is also known as cognitive slippage.

Epidemiology is the scientific study of the

A. effects of diets. B. biological treatment of diseases. C. frequency and distribution of disorders. D. classification systems for mental disorders.

To examine whether depression is stable or changes with age, Dr. Bleu followed a group of participants from age 8 to age 40. This is an example of a __________ design

A) cross-sectional B) sequential C) correlational D) longitudinal