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Most scientists hope that ultimately the information they gather will be of some practical value to solve everyday problems.

A) True
B) False

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Dr.Limmex is trying to win FDA approval for a new drug to treat anxiety.Dr.Limmex claims that 14% of the people who took this new drug reported reduced anxiety; however other researchers claim that 14% of patients who receive no treatment also report reductions in their anxiety levels.It appears that the patients who improved after taking Dr.Limmex's drug


A) had a self-report bias.
B) may have been experiencing placebo effects.
C) were a non-representative sample.
D) should have been placed in the control group, rather than the experimental group.

E) A) and B)
F) A) and C)

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A dependent variable in an experiment refers to the variable


A) held constant across the experimental conditions.
B) deliberately manipulated by the experimenter.
C) that changes value because of the systematic manipulation in the experiment.
D) that the experimenter is depending on to cause something to happen in the experiment.

E) C) and D)
F) All of the above

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Describe some of the reasons for using animals in research.

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Animals may be used in psychological res...

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In scientific investigations a researcher must clearly define the variables under study by precisely describing how they will be measured or controlled.These definitions are referred to as


A) objective definitions.
B) precise definitions.
C) operational definitions.
D) dictionary definitions.

E) B) and D)
F) None of the above

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Dr.Malm predicts that if teachers ignore students who act up in class,fewer students will act up in class.Dr.Malm's prediction is an example of


A) an operational definition.
B) a theory.
C) inferential statistics.
D) a hypothesis.

E) B) and C)
F) A) and C)

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In experimental research,subjects that receive some special treatment in regard to the independent variable are the


A) experimental group.
B) control group.
C) observational group.
D) correlational group.

E) None of the above
F) A) and B)

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If a researcher observed that there were more traffic accidents on cold days than on hot days,then temperature and traffic accidents would be ____________________ correlated.

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