A ________ design to measure the effectiveness of a test commercial for Wal-Mart would be implemented as follows.Respondents are recruited to central theater locations in different test cities.At the central location,respondents are first administered a personal interview to measure,among other things,attitudes toward the store (O₁).Then they watch a TV program,the respondents are again administered a personal interview to measure attitudes towards the store (O₂).The effectiveness of the test commercial is measured as O₂ - O₁. A)one-shot case study B)pretest-posttest control group C)static group D)one-group pretest-posttest

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Quizplus · Accepted Answer

This design is a one-group pretest-posttest because it involves measuring attitudes before (pretest) and after (posttest) the intervention (watching the TV program with the commercial) in the same group of respondents, without a control group.

A ________ Design to Measure the Effectiveness of a Test