One of the main components of an experimental study is random assignment of participants to
one or more groups. This is an attempt to control for
a. the independent variable.
b. the dependent variable.
c. extraneous variables.
d. correlational variables.
c. extraneous variables.
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John Carroll analyzed intelligence test scores from nearly 500 studies and defined _____ independent middle-level abilities.
A) 8 B) 10 C) 12 D) 15
Research on the cognitive factors that affect anxiety disorders suggests that people with these disorders:
A. overproduce or underproduce neurotransmitters that inhibit both fear and anxiety. B. have learned associations between specific environmental stimuli and anxious behaviors. C. may acquire fears simply by observing or hearing about others' negative experiences. D. tend to process more negative information about events than positive or neutral information.
It is clear that the father's sperm does not determine the gender of the child
Indicate whether the statement is true or false.
__________ is the retention of memory for some period of time.
A. Encoding B. Storage C. Retrieval D. Evaluation