Which of the following is a true statement about the single-group pretest-posttest design?

a) There are more potential threats to internal validity as the time between pretest and posttest increases.
b) The design is the weakest experimental design because it only examines a single group.
c) The design is strengthened if there are no similarities between the pretest and posttest.
d) The design cannot be used for studies in which participant characteristics unique to the individual influence results.


a

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Jim has a high sense of self-efficacy regarding his ability to work with wood. Based on this information, we would predict three of the following from social cognitive theory. Which one of the following would we not necessarily predict?

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Academic preparation, physical preparation, improving attitudes, and reducing anxieties are all strategies for which of the following?

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