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Title: This book illustrates to me what is wrong with psychology today
Review: This book is illustrative to me of what is wrong with psychology today. As was brilliantly pointed out in Judith Harris's book "No Two Alike," this book has no scientific basis. I am at least the second review here to point this out.As Harris explains, the portion of the variance for most major traits(juvenile delinquency being a rare exception) that can be attributed to birth order is basically negligible. The only reason for why a correlation may exist at all is probably due to genetic differences in the parents themselves. For example, parents with higher IQs tend to have fewer children. Since IQ is a heritable trait, we can expect only children to have higher IQs than latter-born children in large families. The cause here is genetic in origin. Once these genetic effects have been corrected for, the role of birth order becomes negligible.
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