Dr. Salahma conducts a study on teenagers and product preference. In his study, he begins with a diverse sample of 13- to 19-year-olds. However, after the first few trials of the experiment many of the 15-year-old males in the experiment stop responding
to the questions and choose not to participate in a follow-up session. Dr. Salahma needs to be concerned about __________.
a) random assignment
b) selective attention
c) cohort effects
d) selective dropout
Answer: d
Psychology
You might also like to view...
Gardner believes that schools should focus on both linguistic and logical-mathematical intelligences, and allow other forms of intelligence to be fostered in the home
a. True b. False Indicate whether the statement is true or false
Psychology
If the independent variable in an experiment had an effect this would contribute to _____ variance in the F-ratio
a. total b. between-groups c. within-groups d. error
Psychology