The two groups were retested four years later, and the study compared the results with the first test.

VOA: special.2009.10.21

After seeing or speaking with their mothers, the girls in the first two groups watched the same movie for an hour.

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The willingness of the first two groups of customers to participate in the social venture will depend in no small part on the impact the venture has on the intended beneficiaries of the venture.

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That was first accomplished by two groups in 2002.

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