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Babbie ), reports in addition to experimental and control groups, there are two additional components in both natural and social science conventional experiments; independent and dependent variables and pretesting and post testing.
asked Oct 15 '12 at 02:02 cheryl toles New member

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Babbie reports that there are two additional components in conventional natural and social science experiments in addition to experimental and control groups: independent and dependent variables, and pre- and post-testing.

link comment answered Oct 17 '12 at 10:06 Peter Guess Expert

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