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The Dark Triad In Adult Sibling Dyads

Table 2:

Dark Triad Older sibling (self-rating) Younger sibling (self-rating)
M N PP M N PP
Machiavellianism 0.67 0.29** 0.44** 0.66 0.41*** 0.37***
Narcissism 0.64 0.16 0.66 0.22*
Psychopathy 0.51 0.59
Older sibling (ratings by the younger sibling) Younger sibling (ratings by the older sibling)
M N PP M N PP
Machiavellianism 0.83 0.50*** 0.51*** 0.60 0.64*** 0.50***
Narcissism 0.74 0.25** 0.74 0.37***
Psychopathy 0.64 0.47
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