Dr. Muhammed wants to know if people will rate facial photographs more or less favorably based on the skin color and facial features of the pictures. He digitally alters photographs and mixes the features on each picture,
so that participants in his study do not know exactly what they are looking at. Keeping participants unaware of the exact nature of the study in which they are participating helps reduce __________ effects.
a. criterion
b. subject-expectancy
c. placebo
d. observer bias
Answer: B
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Errors that can lead to outliers can occur in
a. measurement. b. data recording. c. data entry. d. all of the above
Traditional assessment : sign :: behavioral assessment : _____
a. symbol b. cue c. sample d. observation
Which of the following is a brain-imaging method in which radioactive tracers are injected into the subject and a computer compiles an image of brain activity?
a) electroencephalography (EEG) b) computerized axial tomography (CT) c) positron-emission tomography (PET) d) functional magnetic resonance imaging (fMRI)
You want to test people's cola preferences, so you conduct a taste test using two different brands of cola
However, you are worried about possible clues you may give people taking the test. So, you label the two colas and have your assistant, who does not know which cola is which, administer the test to the subjects. Thus, you have prevented yourself and your assistant from giving out any clues by using a. random selection. b. random assignment. c. a single-blind experiment. d. a double-blind experiment.