A Cognitive Psychologist Wants to Do an Experiment to Test

question 68

Multiple Choice

A cognitive psychologist wants to do an experiment to test a variable that may influence the memory of elderly people.She has the following constraints: only 12 people are available as possible participants,and the independent variable she plans to manipulate requires the use of a separate group for each of the two conditions.The psychologist has a reliable and valid pretest she can use to evaluate participants' memory prior to the manipulation.Which design is this psychologist likely to use?

• A) random groups design
• B) natural groups design
• C) matched groups design
• D) placebo control design

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