Many researchers are concerned that the reported similarities among families that adopt children might distort the results of adoption studies that compare environmental and genetic influences. Why is this a valid concern?

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Many researchers are concerned that the reported similarities among families that adopt children might distort the results of adoption studies that compare environmental and genetic influences. Why is this a valid concern?​

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The Answer of Many researchers are concerned that the reported similarities among families that adopt children might distort the results of adoption studies that compare environmental and genetic influences. Why is this a valid concern?​

Many Researchers Are Concerned That the Reported Similarities Among Families