PSY 335 Week 3 Week Three Quiz

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PSY 335 Week 3 Week Three Quiz

Watch the
"Introduction to Designing Experiments" video located in this week's
Electronic Reserve Readings and review all of the readings/learning activities
to prepare for the quiz.


Complete the
University of Phoenix Material: Week Three Quiz.

Click the Assignment Files tab to submit
your assignment.


Week Three Quiz

Complete the following quiz. Choose your
response by highlighting your answer.


1.     When
we perform an experiment, we

a.     measure
independent variables,

b.     produce
dependent variables.

c.     produce
control variables.

d.     produce
a comparison.

e.     hold
independent variables constant.


2.     The
control group in an experiment

a.     fixes
the level of a variable across all experimental conditions.

b.     is
often untreated.

c.     receives
the same level of the independent variable as the experimental group.

d.     refers
to the manipulation of the independent variable.


3.     In
research on the decompression of pregnant rats, the independent variable is
______, a dependent variable is ________, and a control variable is

a.     Reduced
air pressure; behavioral tests; strain of the rat

b.     Body
weight; climbing ability; time of day

c.     Atmospheric
pressure; age of rat; climbing ability

d.     Number
of decompressions; body weight; home cage

e.     Experimental
group; control group; test performance


4.     In
experiments, independent variables are

a.     the
result of careful measurements.

b.     extraneous
to the experiment and held constant.

c.     extraneous
to the experiment and allowed to vary randomly.

d.     independent
of experimenter control.

e.     varied
by the researcher.


5.     Dependent
variables are

a.     manipulated
by the researcher.

b.     potential
independent variables that are held constant.

c.     measured
by the researcher.

d.     probable
behavioral causes.


6.     One
reason a valid experiment may produce null results is

a.     the
range of levels in the independent variable was insufficient to show an effect.

b.     the
dependent variable reflects a broad range of performance.

c.     that
the experiment is conducted in an environment that is too difficult.

d.     that
reactivity occurs in the participants (e.g., they adopt the role of “good


7.     In
experiments, the independent variable should be _________, the dependent
variable should be __________, and the control variable should be ________.

a.     controlled;
constant; randomized

b.     constant;
an effect; causal

c.     free;
restricted; elevated

d.     balanced;
unconfounded; an effect

e.     manipulated;
measured; held constant


8.     An
interaction occurs when

a.     an
independent variable effects a dependent variable.

b.     one
independent variable effects a second independent variable.

c.     the
effect one dependent variable has is not the same at each level of a second
dependent variable.

d.     the
effect one independent variable has is not the same at each level of a second
independent variable.


9.     Which
of the following is an example of the Hawthorne effect?

a.     Experimenter

b.     Reactivity
in an experiment

c.     Participant

d.     Unobtrusive


10.  A
variable that inadvertently causes an experimental result is

a.     confounded
with the dependent variable.

b.     confounded
with the independent variable.

c.     confounded
with the control variables.

d.     unlikely
to be important in experiments.


11.  Construct
validity permits one to do which of the following?

a.     Generalize

b.     Attribute

c.     Have
confidence in constructs

d.     Support


12.  Which
of the following is a source of construct invalidity?

a.     Bias

b.     Random

c.     Carry-over

d.     Counterbalancing


13.  If
a study has external validity, one is entitled to

a.     generalize.

b.     attribute

c.     have
confidence in constructs.

d.     support


14.  Internal
validity allows one to do which of the following?

a.     Generalize

b.     Attribute

c.     Have
confidence in constructs

d.     Support


15.  Which
of the following is the most likely to have the greatest internal validity?

a.     Surveys

b.     Case

c.     Relational

d.     Experiments


16.  Test
reliability determined by a correlation between scores from the same test taken
at two different times is called

a.     test-retest

b.     parallel
forms reliability.

c.     split-half

d.     predictive


17.  Statistical
reliability determines whether results

a.     will
occur five percent of the time.

b.     occur
because of chance.

c.     are
internally valid.

d.     are
produced by bias.


18.  Which
of the following is a major threat to internal validity?

a.     Confounding

b.     Deviant-case

c.     Truncated

d.     Dependent


19.  A
type of validity that is specifically concerned with being able to make causal
statements about relationships between variables is _______________ validity.

a.     External

b.     Internal

c.     Construct

d.     Predictive


20.  A
replication of research helps to determine ______________ validity.

a.     Construct

b.     External

c.     Internal

d.     Predictive
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