According to Figure 13.3, what is the approximate amount of the national debt in 2015?

The Darwin-Wallace theory of evolution

A) has been discredited by modern psychology. B) came out of the early nineteenth century psychological research comparing animals and humans. C) has had little impact on the development of modern psychology. D) is a major theoretical underpinning of modern psychological science.

If a researcher deceives a participant by telling the individual that a study is about one thing, but it is really about something else, the researcher is using

a. a double blind study. b. a cover story. c. experimental realism d. demand characteristics.