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ほらよ、アブスト後半抜粋(一行の文字数制限に引っかかったからに適当に改行入れた)
Japanese datasets from 2004 (N = 2,878–2,938), and 2,005 (N = 3,618–3,692) as well as one dataset from the US in 2004 (N = 3,037–3,092) were used.
In all the datasets, 65 of 68 items yielded non-significant differences between blood groups.
Effect sizes (η2) were less than .003.
This means that blood type explained less than 0.3% of the total variance in personality.
These results show the non-relevance of blood type for personality.