Of those listed, which of the following risky behaviors showed the LOWEST percentage among U.S. high school students?
a. using marijuana during the previous 30 days
b. drinking alcohol during the previous 30 days
c. engaging in sexual intercourse during the previous 90 days
d. being in a physical fight during the previous 12 months
ANSWER: a
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Many dendrites contain short outgrowths called spines that _____
a. increase the surface area available for synapses b. increase the speed of transmission c. eliminate cell waste products d. increase the symmetry of the cel.
Feeling bored when the surroundings remain stable over time illustrates the type of learning called
a. classical conditioning. b. negative reinforcement. c. operant conditioning. d. habituation.
The child, not yet being able to read on her own, gets assistance from an adult to accomplish the skill. This assistance will only be effective if the child is in
a static reasoning period. a scaffold. the period of preoperations. the zone of proximal development.
The SPSS data file for an independent-samples t-test and a paired-samples t-test both have two columns of data in addition to the participant number. How do these columns differ between the two tests?
What will be an ideal response?