Explain the difference between a no-treatment control group and a placebo control group.
What will be an ideal response?
Random error is also called noise.
a. True
b. False
Indicate whether the statement is true or false
It is likely that you will find an interaction when
a. the dependent variable is affected by an independent variable.
b. the effect of one independent variable is affected by a second independent variable.
c. the effect of an independent variable is affected by the dependent variable.
d. there is a restriction of range problem.
A design in which measures are taken at baseline and after the introduction of the independent variable at different times across multiple behaviors is a multiple-baseline across_____ design.
a. participants
b. time
c. behaviors
d. situations
Describe and differentiate the three methods to control extraneous variables.
What will be an ideal response?
Random error can drastically affect the average performance for a group.
a. True
b. False
Indicate whether the statement is true or false
In an experiment the __________ variable is a manipulation of the environment controlled by the experimenter.
a. control
b. experimental
c. dependent
d. independent
Describe the directionality problem and explain how researchers attempt to avoid this problem in an experiment.
What will be an ideal response?
A design in which measures are taken at baseline and after the introduction of the independent variable at different times across multiple participants is a _____ design.
a. multiple-baseline across participants
b. multiple-baseline across time
c. reversal
d. pretest/posttest
In True Score Theory, the observed score = true ability + random error.
a. True
b. False
Indicate whether the statement is true or false
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