RESEARCH METHODS THINKING CRITICALLY WITH PSYCHOLOGICAL SCIENCE
THE NEED FOR PSYCHOLOGICAL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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there is no true control group
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minimization of individual participant differences
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the potential for order effects due to pre-testing
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minimization of experimenter effects
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Detailed explanation-1: -Some limitations of the matched pairs design are: Losing two subjects if one drops out. Time-consuming to find matches. Matches are never perfect.
Detailed explanation-2: -Disadvantages: Internal validity threats reduce the likelihood of establishing a direct relationship between variables. Time-related effects, such as growth, can influence the outcomes. Carryover effects mean that the specific order of different treatments affect the outcomes.
Detailed explanation-3: -An important drawback of pre-experimental designs is that they are subject to numerous threats to their validity. Consequently, it is often difficult or impossible to dismiss rival hypotheses or explanations.
Detailed explanation-4: -Differences between the group means can no longer be explained by differences in age or gender of the participants. The primary advantage of the matched pairs design is to use experimental control to reduce one or more sources of error variability. One limitation of this design can be the availability of participants.