If you have a study in which 30 participants are randomly assigned to one of the three groups, the dfwithin = ______.
A. 27
B. 30
C. 3
D. 2
Answer: A
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A method long attributed to Hall, albeit erroneously, is ____.?
a. ?genetic engineering b. ?the laboratory school c. ?the use of questionnaires d. ?introspection by recapitulation e. ?retrospection with children and adolescents
Damon is suffering from persistent depressive disorder. We can expect that Damon ____
a. ?switches from being somewhat sad to somewhat manic b. ?probably needs to be hospitalized c. ?always feels either extremely depressed or extremely manic d. ?has been feeling somewhat sad and depressed for years
Ethnicity, gender, and age are all examples of _____ variables
a. nonmanipulated b. subject c. manipulated d. both nonmanipulated and subject
Alcohol, nicotine, and heroin are called ______ drugs
Fill in the blank with correct word