Table 1 Lifespan sample descriptive characteristics across 3483 observations.

From: Within-session verbal learning slope is predictive of lifespan delayed recall, hippocampal volume, and memory training benefit, and is heritable

 

Time point 1 (n = 1825, 1098 F)

Time point 2 (n = 888, 508 F)

Time point 3 (n = 423, 251 F)

Time point 4 (n = 174, 97 F)

Time point 5 (n = 116, 69 F)

Time point 6 (n = 57, 30 F)

M

Range

M

Range

M

Range

M

Range

M

Range

M

Range

Age

29.8

4.1–93.3

36.2

5.5–88.5

45.7

10.7–82.3

60.6

21.8–83.3

59.0

22.1–82.8

63.2

23.1–84.0

Interval

–

–

2.7

0.2–9.5

4.7

0.4–10.0

2.6

0.6–11.0

1.6

0.8–6.6

3.0

1.8–8.9

Hip. vol

8134

4494–11,607

8037

4447–10,920

7976

4400–11,417

7641

4375–10,747

7667

5601–10,801

7564

5584–10,735

Learn. trial 1

6.8

0–16

7.2

0–16

7.6

2–15

7.0

2–15

7.4

2–15

7.4

3–12

Learn. slope

5.7

− 5 to 14

6.1

− 4 to 14

6.3

− 1 to 14

7.3

− 1 to 14

7.1

1–13

7.3

1–12

Total learn

52.6

4–80

56.0

13–80

58.8

28–79

59.3

24–79

61.2

20–78

61.3

29–76

Del. recall*

11.6

0–16

12.2

0–16

13.1

0–16

13.6

3–16

14.1

4–16

14.1

5–16

  1. Age and interval are given in years. Interval is interval since 1st visit. Hippocampus volume (Hip. vol.) denotes number of voxels (mmy) in the hippocampal segmentation bilaterally. Learn. Trial 1 = Learning trial 1; number of words recalled at first trial. Learn. slope = learning slope across five trials (trial 5 minus trial 1). Total learn. = total learning, the sum of words recalled across five consecutive trials. Del. Recall = delayed recall approximately 20 min after the short delay recall test that follows the 5 learning trials (delayed recall was missing for n = 7 at Timepoint (Tp) 1, n = 1 at Tp2, n = 2 at Tp3, and n = 1 at Tp5).
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