The behavioural assessment of savouring in schizotypal anhedonia: The Verbal Fluency Test of Enjoyable Experiences (VFTEE)

Investigations of Memory Monitoring in Individuals With Subjective Cognitive Decline and Amnestic Mild Cognitive Impairment

BACKGROUND

Subjective cognitive decline (SCD) has been called the prodromal stage of amnestic mild cognitive impairment (aMCI); however, further investigation is needed to confirm this observation.

OBJECTIVE

To define the relationship between SCD and aMCI.

METHOD

In this case-control study, we used the feeling-of-knowing in episodic memory (FOK-EM) test to measure the memory-monitoring function of 40 adults with aMCI, 60 with SCD, and 55 healthy controls.

RESULTS

The recognition rates of FOK-EM (53.53% ± 7.82%; 55.12% ± 6.08%) and judgment accuracy of the aMCI and SCD groups (γ values 0.21 ± 0.11; 0.30 ± 0.16) were significantly lower than those of the control group (72.32% ± 5.14%; 0.57 ± 0.16) (F = 116.24, P < 0.01; F = 128.57, P < 0.01; F = 73.33, P < 0.01). The scores for correct decision/correct recognition (RR; 27.2 ± 6.43; 29.36 ± 5.16) and correct decision/false recognition (RF; 30.41 ± 5.06; 27.26 ± 4.37) of the aMCI and SCD groups were also significantly lower than those of the control group (49.35 ± 7.13; 11.16 ± 4.35) (FRR = 132.67, P < 0.01; FRF = 131.8, P < 0.01).

CONCLUSION

Mild clinical impairments in memory-monitoring function may precede clinically confirmed objective memory impairment in individuals with SCD.