Which of the following types of attrition is specifically a threat to the internal validity of a study?
A. homogeneous
B. heterogeneous
C. homogeneous and heterogeneous
D. historical effects
Answer: B
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Shakira, who is running for a local city council position, sent pens with her name on them to prospective voters. She is hoping the voters will be influenced by
a. bribery. c. the religiosity principle. b. the scarcity principle. d. the reciprocity principle.
The qualities found in people with a hardy personality include
a. a sense that things in life are determined by external forces. b. a lack of control over their lives and work. c. a tendency to see life as a series of challenges. d. a tendency to avoid extra responsibilities.
Thanks to new computer technology, virtual reality devices permit behavior therapists to conduct _______________ in their offices
A) free association B) transference C) exposure therapy D) unconditional positive regard
________ thinking produces one correct answer and characterizes the kind of thinking that is required on conventional tests of intelligence.
A. Convergent B. Referenced C. Schematic D. Divergent