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naeemi naeemi
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7 years ago
The classical experimental design
a.   helps guard against the sources of internal and external validity.
b.   helps guard against the sources of external invalidity.
c.   helps guard against the sources of internal invalidity.
d.   cannot guard against the sources of either internal or external invalidity.
e.   what it helps guard against depends upon the particular experiment.
Textbook 
The Practice of Social Research

The Practice of Social Research


Edition: 13th
Author:
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clintreclintre
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7 years ago
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naeemi Author
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7 years ago
This calls for a celebration Person Raising Both Hands in Celebration
mmmm_dat_userna
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Smart ... Thanks!
mikey3091
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2 hours ago
This site is awesome
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