Validity means that a measurement
a. is stable over time or across observers.
b. identifies the causes of behavior.
c. is free from contamination by cohort effects.
d. measures what it is supposed to measure.
D
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During the first quarter of his freshman year in high school, Dinky received a very low score on a vocabulary test. Three months later Dinky took test again, and he scored much higher on the test. Dinky's improvement can be explained by:
A) maturation B) regression toward the mean C) testing effects D) all of the above (all are good explanations)
Gwen eats huge amounts of food in a single sitting, and then vomits and uses laxatives to purge the excess food. Gwen appears to suffer from
A. anorexia nervosa. B. compulsive eating. C. binge-eating disorder. D. bulimia.
The ________ is the most caudal portion of the brain stem
A) cerebellum B) spinal cord C) medulla oblongata D) pons E) metencephalon
At every age and stage of life, _____ psychologists investigate the influence of multiple factors on development, including biological, environmental, social, cultural, and behavioral factors.
· epigenetic · cognitive · biological · developmental