The NPI-16 asks participants to choose one statement from ea…
The NPI-16 asks participants to choose one statement from each of the 16 pairs of items, such as the following: ______ I am an extraordinary person. ______ I am much like everybody else. ______ I like to be the center of attention. ______ I prefer to blend in with the crowd. What type of question format did Ames et al. use for the NPI-16?
Read DetailsRESEARCH STUDY: Dr. Guidry conducts a study examining the re…
RESEARCH STUDY: Dr. Guidry conducts a study examining the relationship between the number of friends one has and the experience of daily stress and life satisfaction. She randomly samples 1,500 elderly men and women in Nashville, Tennessee. Below are her findings: Life satisfaction and experience of daily stress: r = –.57, 95% CI [–.77, –.37] Number of friends one has and experience of daily stress: r = .09, 95% CI [–.27, .45] Number of friends one has and life satisfaction: r = .36, 95% CI [.12, .60] Comparing all three correlations, Dr. Guidry will be able to most accurately predict life satisfaction from the experience of daily stress because the relationship
Read DetailsRESEARCH STUDY: Dr. Ickes is interested in studying the pote…
RESEARCH STUDY: Dr. Ickes is interested in studying the potential causal relationship between doing homework and academic achievement. In January, Dr. Ickes has her students report their Fall GPA (a measure of academic achievement) and estimate how many hours they spent doing homework during a typical week in the Fall semester. In April, Dr. Ickes measures the same variables again (the estimated number of hours spent doing homework during a typical week in the Spring semester and their Spring GPA). She finds the following correlations. What type of study is Dr. Ickes using?
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