Part A: Statistical Inference
Identify
the probability associated with the inferences drawn in the following
passages from results in journal articles. In cases of hypothesis
testing, identify the type and probability of a decision error. Use my example responses as a guide.
1)
“Before the matrix games were played, males expected to win
significantly more games than did females, F(1, 128)=5.71, p<.05.”
2)
“It was also found that the subjects had higher expectancies of
success when the experiment was conducted by a male experimenter than
when it was conducted by a female experimenter F(1, 128)= 11.05,
P<.01.”
3) “Risk factors for SARS-CoV-2 infection included older age (odds ratio, 1.2 per decade; 99% CI, 1.2 to 1.3).”
Part B: Generalization
Read
Mook’s (1983) “In Defense of External Invalidity” (see attached) and
answer the following questions in a brief paragraph each:
Define
external invalidity and describe various kinds of external invalidity.
(hint: research is commonly criticized for being externally invalid in
one of two ways).
When is external invalidity a weakness in an experiment? When is it a strength? Explain why it may be a strength.
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