Some cats "play" with a mouse before killing it. How can this kind of behavior best be explained?
a. the cat's perverse pleasure in prolonging the mouse's pain
b. an instinctive need for additional pursuit behaviors prior to eating
c. a conflict between attack and escape behaviors
d. regression to infantile patterns of activity in the hippocampus
c
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In comparison with a confidence level of 0.05, a confidence level of 0.01 means
a. you are less sure that the null hypothesis is wrong. b. you are more sure that the null hypothesis is wrong. c. you are absolutely sure that the null hypothesis is wrong. d. you are more sure that the experimental hypothesis is wrong.
__________ help explain why identical twins, though precisely the same in DNA sequencing, sometimes display strikingly different phenotypes with age
A) Heredity estimates B) Passive correlations C) Evocative correlations D) Methylation levels
What term do psychologists use for the second phase of short-term memory, in which attention and conscious effort are brought to bear on the material at hand?
a) sensory memory b) working memory c) biphasic memory d) extended short-term memory
Typically, __________ research designs have higher statistical power relative to __________ designs
a. between-subjects; within-subjects b. within-subjects; between-subjects c. between-subjects; repeated measures d. within-subjects; repeated measures