Because of their consumption of ___________ Paleolithic peoples had, on average, a much higher dietary intake of calcium than modern Westerners:

Suppose that a psychology professor begins a lecture by saying, "OK, do you all remember the concept of "ecological validity"? The students all nod their heads. During this interaction, the professor was primarily interested in

a. solving the linearization problem. b. avoiding a syntactic error. c. formulating an indirect request. d. establishing common ground.

John received a score of 90 on an intelligence test. Two days later, he received a score of 55 on a different form of the same test. The test was apparently lacking in ______

a. alternate-form reliability c. test-retest reliability b. content validity d. criterion-related validity