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Chapter 11

Multiple Choice Practice Examination Questions

Multiple Choice Practice Examination Questions

This activity contains 10 questions.

	The primary difference between a quasi-experimental design and a randomized experimental design is   The ability of the design to generalize the results of the study The ability of the design to control for potential threats to internal validity That quasi-experimental designs are used in field research and randomized designs are used in laboratory research The number of independent variables that can be manipulated

	The primary threat to internal validity in the nonequivalent comparison group design is   Selection Testing History Instrumentation

	The outcome from a nonequivalent comparison group design that gives us the most confidence that the treatment produced the observed effect is   An increasing treatment effect An effect in which both the experimental and control groups increase but the experimental group increases more A crossover effect An effect in which the experimental group increases but the control group does not change

	Most of the threats to internal validity are ruled out in the time-series design   When the pre- and posttesting outcomes differ significantly As a result of the discontinuity in the regression line As a result of the multiple pretests As a result of the change in level corresponding with the introduction of the treatment

	A school principal wants to decrease the amount of truancy that exists in his school system. He requires all students who have missed coming to school an average of twice every week for the past year to participate in a special program designed to make school more enjoyable and rewarding. To test the effectiveness of this special program he would probably use which design?   Nonequivalent comparison group design Time series design Randomized experimental design Regression discontinuity design

	What distinguishes a non-equivalent control group design from a pretest-posttest experimental design?   The way participants are assigned to groups The number of hypotheses tested The number of participants used The use or absence of pretesting

	Assume a researcher designates one class of children to be the experimental group and another class the control group. Both groups are given a pre- and posttest and the experimental group is given the treatment condition between pre- and posttesting. The researcher would be using a   time series design. simulated before after design. multiple baseline design. nonequivalent comparison group design.

	A researcher finds that his experimental group, who scored significantly lower than the control group at pretest, now scores significantly higher following the experimental treatment. This has most likely resulted from   a selection-maturation effect. statistical regression. discontinuity. an experimental treatment effect.

	The effect of the treatment condition in the time series design is noted by   the significant difference in the pre- versus posttest scores. the pattern of pre-treatment responses the discontinuity in the recorded series of pre- and post treatment responses the return to baseline upon removal of treatment.

	Quasi experimental designs should be used when   all of the above. participants are randomly assigned to conditions. it is not possible to directly manipulate the independent variable. it is not possible to control all extraneous variables.

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