Table 1 Mean (standard deviation) accuracy, response time, invalid answers and interest ratings for the man-made/natural task in participants with aMCI and healthy controls, and results of independent samples T-test.

From: Deficits in spontaneous and stimulus-dependent retrieval as an early sign of abnormal aging

Man-made/natural task

aMCI (n = 27)a

Healthy controls (n = 27)

t

df

p

d

Accuracy

0.91 (0.12)

0.96 (0.02)

− 1.94

52

0.057

0.58

Response time (ms)

2096.05 (542.15)

1889.65 (345.41)

1.66

52

0.101

0.45

Invalid answers

32.37 (41.30)**

10.14 (8.14)

− 2.98

52

0.008

0.71

Interestb

7.96 (2.08)

6.84 (3.04)

1.54

50

0.129

0.43

  1. aMCI amnestic Mild Cognitive Impairment.
  2. Differences between aMCI and HC are indicated by ** p < 0.01.
  3. aExcept for the interest ratings that were not provided by two participants (one in each group).
  4. bTask interest ratings were made on a 10-point scale (1 = very boring; 10 = very interesting).
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