For the very mild AD group, 47 responded correctly and
8 responded incorrectly to the reverse-backward testing with
3 figures. For the aMCI group, 43 responded correctly and 2
responded incorrectly to the reverse-backward testing with
3 figures. On the other hand, for the very mild AD group,
22 responded correctly and 33 responded incorrectly to the
reverse-backward testing with 4 figures. For the aMCI group,
19 responded correctly and 26 responded incorrectly to the
reverse-backward testing with 4 figures. There were no significant
differences in the reverse-backward testing (3 figures: