Does background music affect the play of young children? To address this question, a researcher videotaped the play of small groups of preschool children at a local daycare. Using the same playroom and collection of available toys for each group, the researcher recorded the toy selections made by the children and frequency of cooperative versus competitive play under classical, country, rock music, and no music conditions.
QUESTION: what are the variables and how are they operationally defined?
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