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
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A Skinner box uses the reinforcement of water.
Answer the following statement true (T) or false (F)
Discuss the environmental variables that affect aggressive behavior in humans
What will be an ideal response?
Margaret Mead's research in Samoa laid the groundwork for research
A) on cross-cultural infertility problems. B) on extramarital affairs. C) on challenging gender-role stereotypes. D) on homosexual orientation.
A risk factor such as _____________________ has the potential to interfere with healthy development in children.
A. insecure attachment B. death of a parent C. neighborhood violence D. all of the choices