For this activity, identify the independent (or quasi-independent) and dependent variables in the following examples. Also have identify the type of manipulation used for the independent variable and...

For this activity, identify the independent (or quasi-independent) and dependent variables in the following examples. Also have identify the type of manipulation used for the independent variable and the scales of measurement for the dependent variable(s). Discuss each example and consider any confounding variables that may pose a problem for the study.

1. A researcher would like to know whether men and women experience jet lag differently. He surveys people traveling from San Francisco to New York to measure their feelings of sleepiness and disorientation upon arriving at their destination.