The fact that IQ correlations increase with age for identical twins, but decrease with age for fraternal twins, suggests that
A) the genetic likeness of identical twins causes them to seek out similar niches in adolescence and adulthood.
B) the influence of rearing conditions on IQ is stronger for identical twins than fraternal twins.
C) rearing experiences play a larger role early in life, whereas genetic influences play a larger role later in life.
D) the contribution of heredity to IQ decreases with age.
A
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A procedure used to hide the group assignment from the participants in a study to prevent their beliefs about the effectiveness of a treatment from affecting the results is ______.
a. double-blind design b. tri-blind design c. multi-blind design d. single-blind design
A commonsense approach to psychology
a. is the most reliable. b. is often contradicted by empirical evidence. c. is the basis for most psychological theories. d. provides information that is specific and consistent.
One problem with the theory that individuals use prototypes to categorize is that it does not allow for the possibility of graded membership
Indicate whether this statement is true or false.
Information selected from sensory memory is transferred to ________ memory
a) primary b) factual c) long-term d) short-term