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Chapter 06 - Independent Groups Designs
28. (p. 185-186) Random assignment to conditions works to balance participants' individual
differences across conditions of the experiment by
29. (p. 185-186) Researchers manipulated exposure to body images by randomly assigning young
girls to one of three conditions. They observed that young girls' body dissatisfaction was
greatest after viewing very thin images of a Barbie doll compared to normal-weight images
("Emme" doll) or neutral images. The alternative explanation that girls in the Barbie condition
might have weighed more prior to exposure to body images can be ruled out because the
researchers
30. (p. 185-186) A researcher interested in young girls' exposure to thin images of Barbie dolls
compared to normal-weight images ("Emme" doll) wanted to make sure girls in the two
conditions (Barbie, Emme) did not differ in the number of Barbie dolls they own at home.
The best way to do this would be to
