Which of the following does not represent one of the criteria for deriving a cause-effect conclusion in experimental research?

Narcissists have _____ self-esteem.

A) high B) low C) fragile D) no

Maguire and colleagues found that a London cabby's ability to navigate the city's

confusing streets was correlated with the size of a a particular region of the a. brain stem. b. prefrontal cortex. c. hypothalamus. d. hippocampus. e. cerebellum.