Researchers believed that floral scent can sometimes improve a person’s learning ability. they set up an experiment in which each of 22 subjects completed sets of pencil-and-paper mazes. each subject wore a floral-scented mask and an unscented mask, in random order. the researchers measured the time to complete the sets of mazes. this experimental design is:
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Researchers believed that floral scent can sometimes improve a person’s learning ability. they set u...
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