A simple main effect is
a. a main effect that is statistically significant
b. an interaction
c. the effect of an independent variable at a particular level of another independent variable
d. a post hoc test
e. the difference between two significant main effects
c
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A patient receives the results of his diagnostic tests and decides to seek a second and third opinion. He is surprised to learn that each of the three clinicians' diagnoses is different from the others. What statement accurately describes this scenario?
A. This reflects high inter-rater reliability. B. This illustrates low inter-rater reliability. C. This describes low test-retest reliability. D. This demonstrates high test-retest reliability.
An extended falloff in cognitive performance or in emotional investment in life is
A) unusual in healthy older adults. B) a sign of loss of vitality and impending death. C) expected in adults soon after age 100. D) due to disuse of skills rather than biological aging.