Why Is It Essential That the Experimental and Control Groups

question 3

Multiple Choice

Why is it essential that the experimental and control groups be treated identically in every respect but one?

• A)so that the dependent variable can be accurately measured
• B)so that the results will apply outside the laboratory setting
• C)so that if the behaviour of the two groups differs,the difference can be credited to the one thing that distinguished the groups from one another
• D)so that if the behaviour of the two groups differs,that difference can be used to establish a functional relationship between the independent and dependent variables

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