The idea that language represents thoughts, objects, and events through specific and abstract symbols is known as

Much of our information about rates of drug use come from survey questionnaires. One important limitation of such questionnaires is

A. the sample sizes are too small. B. people might not answer honestly. C. the people who do the studies are biased. D. they don't ask questions about illicit drugs.

Which of the following could occur in a person with partial color blindness?

a. An inability to correctly discriminate a traffic light signal b. An inability to detect movement at the periphery of vision c. Perception of stars as red dots in the sky d. Perception of the world as composed of only blues and yellows