Table 2.

Descriptive Statistics for All Persons from the First Testing with the Most Cognitive Variables

Group		IR	DR	S7	BC	DA	NA	Age	Educ
Total sample	M	53.46	42.53	69.22	96.40	93.93	88.94	65.40	11.85
	SD	18.48	21.29	32.65	17.82	14.09	18.10	11.05	3.46
	Skewness	−0.01	0.08	−0.70	−4.97	−2.92	−1.65	.51	−0.82
	Kurtosis	−0.26	−0.27	−0.85	23.35	10.66	2.25	−0.82	1.00
White-not Hispanic	M	55.27a	44.72a	75.17a	97.82a	94.73a	92.32a	65.98a	12.49a
	SD	18.20	21.09	29.54	13.92	12.84	15.00	11.16	2.89
	Skewness	−0.07	−0.01	−0.98	−6.53	−3.05	−2.10	0.43	−0.53
	Kurtosis	−0.19	−0.20	−0.25	41.80	12.01	4.49	−0.92	0.82
Black-not Hispanic	M	48.27b	35.35b	49.59b	91.16b	91.58b	78.63b	64.23b	10.79b
	SD	18.48	21.00	34.76	27.23	16.94	23.52	10.70	3.66
	Skewness	0.11	0.36	0.11	−2.90	−2.47	−0.82	0.69	−0.61
	Kurtosis	−0.34	−0.19	−1.34	6.65	7.10	−0.27	−0.49	0.25
Hispanic	M	48.07b	37.77c	55.48c	94.21c	91.38b	79.23b	62.61c	8.43c
	SD	17.48	19.56	35.19	22.30	17.36	19.71	10.16	4.73
	Skewness	0.32	0.31	−0.11	−3.78	−2.51	−0.57	0.86	−0.08
	Kurtosis	0.07	0.07	−1.42	12.72	7.21	−0.40	−0.14	−1.01
Men	M	51.78a	40.72a	74.05a	96.78a	93.53a	91.14a	63.71a	12.14a
	SD	17.94	20.12	31.01	17.04	14.47	16.68	10.53	3.62
	Skewness	0.06	0.12	−0.95	−5.30	−2.82	−2.02	0.67	−0.86
	Kurtosis	−0.19	−0.16	−0.35	26.62	9.93	3.92	−0.61	0.80
Women	M	54.71b	43.89b	65.69b	96.12b	94.21b	87.35b	66.66b	11.64b
	SD	18.72	22.02	33.37	18.37	13.80	18.91	11.26	3.31
	Skewness	−0.08	0.02	−0.54	−4.76	−3.00	−1.44	0.38	−0.83
	Kurtosis	−0.27	−0.35	−1.08	21.36	11.25	1.47	−0.92	1.24

Notes. This subsample was selected so there would be only one person per family, and respondent-level sampling weights were used to adjust to a U.S. national norm. IR = immediate recall; DR = delayed recall; S7 = serial 7s; BC = backward counting; DA = dates; NA = names; Educ = years of education; SD = standard deviation. Different subscripts in each column indicate significant differences at p < .05, within gender and ethnicity.