The problem with the selection threat to internal validity is that
a. people may change through the course of the study.
b. people in different groups may already differ at the start of the study.
c. people in different groups may be exposed to different extraneous variables during the course of the study.
d. scores of the participants tend to move toward the average with repeated measurement.
B
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The appearance of real motion from still images presented sequentially is called ______.
A. peripheral motion B. beta motion C. phi motion D. induced motion
Thora loves to paint but realizes her fine-motor movement is not what it used to be. She now paints in the morning when she experiences fewer tremors and makes sure to go slowly when working on her projects. This is an example of
A. selection. B. optimization. C. compensation. D. assimilation.
Over the course of their lives, approximately what percentage of Canadians are estimated to suffer from PTSD?
A) 23% B) 10% C) 22% D) 28%
Richard is the last to arrive at work and the first to leave. He takes several smoke breaks during the day and spends a lot of time on social media. This would suggest that Richard is low in what personality trait?
A. agreeableness B. conscientiousness C. openness D. extroversion