In an experiment, how might a researcher rule out preexisting differences between

the experimental and control groups?

(a) random assignment of subjects to groups
(b) random sampling of subjects
(c) assigning subjects to groups in turn, so that the first subject who shows up
is put in one group, the second into the other, etc.
(d) sampling of situations


A

Psychology

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What will be an ideal response?

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Which of the following sequences outlines the basic strength-based framework for human change?

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In comparing consciousness to an ever-flowing river, the early psychologist William James was making the point that consciousness involves

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The three phases of the prenatal period in the correct order are:

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