Social Studies, 21.02.2020 01:57 ezequielromero41
Emma is planning an experiment to examine whether reading to children increases their vocabulary size. She plans to measure the vocabulary size of a group of 18-month-olds, read to them three times a week for three months, then measure their vocabulary size again. When she compares the average vocabulary at the two times, she finds that there was a significant increase in their vocabulary. Why can't she conclude that this is due to the reading?a. mortality/attrition effect. b. selection effect. c. history effect. d. maturation effect.
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Emma is planning an experiment to examine whether reading to children increases their vocabulary siz...
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