Why does a good experiment include a control group

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Reference no: EM13342289

Why does a good experiment include a control group?

a) it increase the number of people in the study, and hence, the generalizability of the results

b) it gives us information about how participants would perform without experiencing the experimental treatment

c) it eliminates the effects of confounding variables

d) control groups have been established part of scientific tradidion for many decades

Reference no: EM13342289

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