Table 6. BFI-10 descriptive statistics.

	Mean (sd)					Cronbach's alpha (2-item correlation)					Test-retest†
	S1a	S2a	S2b	S2c	S2d	S1a	S2a	S2b	S2c	S2d	S1a	S2b	S2c	mean
E	3.33 (.942)	3.23 (.990)	3.24 (.990)	3.05 (1.056)	3.41 (.999)	.752 (.603)	.593 (.423)	.704 (.546)	.704 (.550)	.675 (.511)	.803	.823	.873	.835
A	3.69 (.669)	3.66 (.843)	3.63 (.871)	3.59 (.830)	3.64 (.826)	.037 (.020)	.295 (.174)	.466 (.304)	.269 (.157)	.299 (.176)	.515	.811	.731	.705
C	3.48 (.814)	3.44 (.883)	3.28 (.847)	3.40 (.816)	3.36 (.830)	.462 (.313)	.394 (.251)	.251 (.146)	.286 (.174)	.459 (.309)	.668	.645	.706	.674
N	2.81 (.856)	3.01 (.927)	2.92 (.960)	3.05 (.926)	2.99 (.939)	.628 (.458)	.429 (.273)	.502 (.335)	.331 (.198)	.593 (.422)	.610	.749	.837	.746
O	3.81 (.803)	3.79 (.886)	3.83 (.898)	3.83 (.911)	3.94 (.849)	.438 (.283)	.364 (.225)	.382 (.238)	.447 (.291)	.525 (.358)	.698	.821	.839	.793

E = extraversion; A = agreeableness; C = conscientiousness; N = neuroticism; O = openness. S1a–S2d = Study 1a to Study 2d. Study 1a, N = 235 (agreeableness and conscientiousness, N = 234). Study 2a, N = 975 (agreeableness, N = 973; conscientiousness, N = 972; openness, N = 974). Study 2b, N = 213 (agreeableness and neuroticism, N = 212). Study 2c, N = 189. Study 2d, N = 268.

^†S1a, n = 90/91; S2b, n = 78/79; S2c, n = 91. All ps < .0005.