The drug Ecstasy (also called MDMA) is classified as which of the following?
a. a stimulant
b. a depressant
c. a hallucinogen
d. an opiate
A
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The main advantage of a double-blind research study is that it minimizes the effect of:
a. the dependent variable b. the independent variable c. expectations by both the experimenter and the participants d. any confounding variables
Longitudinal follow-up research on the Better Beginnings, Better Futures Project of Ontario, Canada, revealed a(n) __________
A) reduction in children’s social adjustment B) increase in adolescent delinquency C) improved sense of community connection D) reduction in children’s academic achievement
The Chase and Simon study comparing chess masters and ordinary players showed that when chess pieces were arranged in random order, ____________
a. chess masters forgot less b. ordinary players forgot less c. chess masters and ordinary players forgot about the same amount d. chess masters learned more and forgot more
The variance associated with the interaction in a between subjects factorial design is part of the _____ variance
a. residual b. error c. between groups d. within groups