Moira checks her weight several times a day. One evening she steps on her bathroom scale and she is surprised when it is 6 pounds higher than her mid-day weigh-in. She steps on the scale again, but this time the weight is 2 pounds less
Puzzled, she steps on the scale again, only to find that she is 5 pounds lighter! Which of the following statements is true with regard to Moira's scale?
a. It lacks face validity
b. It lacks criterion validity
c. It lacks internal validity
d. It lacks reliability
Answer: D
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Hopwood et al. (2009 ) reported the following on individuals with borderline personality disorder:
a) There is considerable instability in their personality traits over a period of six years b) There is considerable stability in their personality traits over a period of six years c) There is insufficient evidence to make a statement on BPD personality traits d) None of the above
An operational definition of a variable in a study defines the variable
A) in the Method section of the APA paper B) as a function of the IV-DV relationship C) in terms of whether it is an independent or dependent variable D) in terms of the operations or procedures needed to produce the variable