Table 3.

Latent Mean Differences and Effect Sizes for the Narcissistic Personality Inventory.

Trait	USA–UK			USA–Germany
	M [CI]	SD	Cohen’s d [CI]	M [CI]	SD	Cohen’s d [CI]
Leadership	−0.36 [−0.49, −0.23]	0.98	−0.37 [−0.49, −0.25]	−0.22 [−0.3, −0.14]	0.77	−0.28 [−0.36, −0.21]
Vanity	−0.26 [−0.42, −0.1]	1.03	−0.25 [−0.37, −0.13]	0.37 [0.27, 0.48]	1.00	0.37 [0.3, 0.45]
Entitlement	0.03 [−0.15, 0.2]	0.93	0.03 [−0.09, 0.15]	0.21 [0.07, 0.35]	1.02	0.21 [0.13, 0.28]

Note. CI =confidence interval.