Question: 2. Barbara Daydreamer designed a three-item questionnaire to be used as a preand posttest instrument to measure adolescents knowledge of alcoholism as a disease. Later

2. Barbara Daydreamer designed a three-item questionnaire to be used as a preand posttest instrument to measure adolescents’ knowledge of alcoholism as a disease. Later she was surprised to find that there were no significant differences between pre- and posttest scores. How would you explain this?

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