Persons who are either euphoric and hyperactive or severely depressed may be suffering from

Dr. Smith wants to know more about how our sensations become perceptions. She has developed a drawing that can be interpreted in different ways, depending on which parts of the drawing the viewer focuses on

Now she is showing the drawing to different people, and asking them to report what they see, any thoughts they may have as they view the drawing, and how their thoughts influence their perceptions. Dr. Smith's approach to this research most closely resembles ____________ a) structuralism. b) functionalism. c) Gestalt psychology. d) evolutionary psychology.

Which of the following statements about the "random events" theory of biological aging is true?

A) Genetic engineering that manipulates telomere activity has extended the lifespan of human cells. B) Animal studies confirm an increase in DNA breaks and deletions and damage to other cellular material with age. C) Because longevity tends to be a family trait, environmental factors have minimal impact on the aging process. D) Humans who maintain higher levels of physical activity over several decades reduce their maximum lifespan.