Robb carefully designed a study to test a method for reducing test anxiety among students. On the day he conducts his post-test, a broken water main nearby results in jack hammering and other construction sounds that are seem to be distracting research participants. Robb's ability to detect differences among his groups may have been compromised by ____
a. low reliability of the measure
b. random heterogeneity of participants
c. poor reliability of treatment implementation
d. random irrelevancies in the setting
d
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It is not uncommon to have a few people in your sample who do not represent the population, even if you sample randomly. Researchers refer to this as _______.
a. differential attrition b. self-selection c. nonresponse bias d. sampling error
Explain the neural systems and cellular mechanisms of reinforcement
What will be an ideal response?
Goals based on a desire for self-improvement are referred to as ________ goals
Fill in the blanks with correct word
DSM-IV-TR classifies people along five axes and _____ disorders
a. interprets b. speculates on causes of c. describes symptoms of d. prescribes treatment for