An environmental factor can only threaten the internal validity of a study when it ______ the levels of an independent variable.
A. is held constant with
B. is equal to
C. varies systematically with
D. is eliminated from
Answer: C
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The evidence suggests that medications for attention-deficit/hyperactivity disorder __________.
A. work well over the short term, but the long-term effects are not well-known B. work well over both the short and long term C. really don't work at all; what is seen is due to the placebo effect D. only work for children who have had the diagnosis for at least two years
To understand an example, you need to understand the logic behind the experiment that serves as the example. Morphine tolerance in the example in Chapter 1 would be shown when
a. paw-lick latencies decrease over time with repeated injections of morphine. b. paw-lick latencies increase over time with repeated injections of morphine. c. paw-lick latency do not vary as a function of time. d. short latencies indicate reduced pain sensitivity.
The term "cyclothymia" is derived from the Greek terms meaning ______
a. melancholy c. bad spirited b. phlegmatic d. circle spirit
Discuss "cultures of honor" and their connection with sexual jealousy and with aggression
What will be an ideal response?