A social psychologist wants to study the impact of listening to classical music on people's level of comfort in social interactions. She runs a study using a convenience sample of college undergraduates. The use of this particular sample is a threat to
a. mundane realism.
b. experimental realism.
c. internal validity.
d. external validity.
d
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Rachel can sort objects by size or color and can solve simple addition and subtraction problems. However, she cannot think logically about abstract ideas such as freedom and justice. Rachel is most likely in Piaget's __________ stage of cognitive development.
A. sensorimotor B. preoperational C. concrete operational D. formal operational
The normal age change called _____ progresses into heart disease.
A) atherosclerosis B) night vision troubles C) bone-density loss D) hearing loss
Which of the following is NOT an unobtrusive measure?
A. the redness of the eyes of an insomniac B. the numbers of dry cracks in the hands of a person who is a compulsive handwasher C. the number of slashes on a depressed person's arm D. the number of times a hyperactive student stands up in class
Answer the following statement(s) true (T) or false (F)
Kornell (2009) asked participants to study difficult GRE-type words and their more common synonyms (e.g., effulgent: brilliant). Kornell found that students who were made to distribute their study forgot many more vocabulary terms than those who were made to mass their study.