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Dr. Paddock is a counseling psychologist who is interested in decreasing adjustment issues in first-year college...

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Psychology

Dr. Paddock is a counseling psychologist who is interested indecreasing adjustment issues in first-year college students. She iscurious if having students create collages of their first few weeksof school and then mailing them home will help students feel theyhave integrated their new life with their old and, as a result,will help them feel less homesick. She samples a group of 100incoming college freshmen at her university and measures howhomesick they are during the first week of school. During Week 4 ofschool, she has them make the collage and send it home. During Week7 of school, she measures their homesickness again. She notices asignificant reduction in the amount of homesickness from thepretest to the posttest and concludes that her treatment iseffective. Imagine in Dr. Paddock’s study that only 90 of theoriginal participants completed the measure of homesickness duringWeek 7 (10 participants had left the university and wereunavailable). What kind of threat to internal validity does thispose? How does this affect her conclusion that her treatment forhomesickness worked?

Answer & Explanation Solved by verified expert
4.2 Ratings (838 Votes)
Internal validity means how well or accurate a study is and how well the independent variable and dependent variable are connected to each other In this study in the beginning there are 100    See Answer
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