After reading the case of Ted Bundy, a serial killer, several students discussed the advantages and disadvantages of case studies in psychological research. What conclusions might they reach?
a) Case studies are easy to conduct, but they are not good sources of research ideas.
b) Case studies can provide a wealth of detail, but the information may not be applicable to other individuals.
c) Case studies are the primary research method used by psychologists because they provide cause-and-effect conclusions.
d) Case studies are used only for abnormal behavior and thus have limited use in studying the kinds of behavior that are of interest to most psychologists.
ANS: b
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Research on the BMI of adults raised by foster parents indicates that adoptees resemble their biological parent more than their adoptive parents. This supports the obesity factor of
a. obesity personality disorder. c. excessive eating and inadequate exercise. b. set point. d. heredity through a genetic predisposition.
In industrialized nations, studies confirm that
A) heredity accounts for excessive weight gain. B) obesity risk is greatest for individuals living in economically well-off households. C) parental feeding practices have little impact on childhood obesity. D) children of mothers who smoked during pregnancy are more likely to be overweight.
Serotonin affects neurons involved in appetite and pain suppression
Indicate whether this statement is true or false.
Research conducted by Leskovec and Horvitz (2007) has found that, in an analysis of instant messaging interactions between 240 million people, the connection between 90 percent of pairs
a. could be connected in about 20 links/hops. b. could not reliably be connected using the six degrees of separation theory. c. were connected within 8 links/hops. d. were operating only in localized (physically close) network conversations.