When participants in an experiment communicate with each other, the difference between groups may be reduced. This is called:
a. diffusion.
b. dissension.
c. dissemination.
d. statistical regression.
A
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Which statement is TRUE of language development??
a. ?Children typically coo before they babble. b. ?Cooing consists of consonant and vowel sounds together. c. ?Babbling consists of vowel sounds. d. ?Infants begin cooing at around six months of age.
In order for observations to be valid for scientific use, they must be as ___ as possible.
A. descriptive B. objective C. subjective D. inferrential
State four types of validity for research design.
What will be an ideal response?
When the regression lines that predict performance for two groups have different slopes, which one of the following types of measurement bias is likely to occur?
A. single-group validity B. differential validity C. culture bias D. method bias