Which of the following factors was NOT necessary to ensure the internal validity of the Latané and Darley "seizure" study described in the text? They
a. made sure their conditions varied on only the key variable.
b. made sure that the seizure overheard by participants was identical for everyone.
c. randomly assigned participants to groups or conditions.
d. asked participants about their knowledge of epilepsy before beginning the experiment.
Answer: D
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Based on currently available data, ________ appear to be inherited.
a) specific phobias b) specific genes that influence fear and anxiety c) social phobias influenced by 15 different chromosomal abnormalities d) different degrees of trait anxiety
Which of the following statements is true regarding new discoveries about genotypes and phenotypes?
Genes affect only a handful of behaviors. Most environmental influences on children raised in the same home are not shared. People tend to choose friends and associates based solely on social interactions. In nonidentical twins, genes elicit responses that are not explained in our current understanding.