Subjective Cognitive Decline and/or Objective Cognitive Decline in Middle-Aged Adults? Examining the relationship between Cognitive Complaints and the Function of Episodic Buffer


Ευδοκία Εμμανουηλίδου
Δέσποινα Μωραΐτου
Νικολέτα Φραντζή
Abstract

Subjective Cognitive Decline (SCD) refers to the cognitive decline that middle-aged adults report experiencing, but that has yet to be confirmed by objective neuropsychological testing. This decline typically manifests as the individual's cognitive complaints and concerns about their memory. The current study aimed to examine the relationship between subjective cognitive complaints, and performance in a feature binding test that assesses the function of working memory’s episodic buffer and is considered a relatively difficult task. We expected that middle-aged adults with more cognitive complaints, based on their self-reports, would have worse performance in the test. In total 103 middle-aged individuals, between 50 and 64 years, were administered online self-reported questionnaires for their cognitive function as well as the feature binding test. The results showed that cognitive complaints were related to self-reported affect and specifically, cognitive complaints were related with negative affect about memory, which mediates the relationship between cognitive complaints and feature binding test performance. Consequently, subjective and objective assessments of cognitive decline appear to be associated in middle-aged adults, with the perceived negative affect about memory functioning acting as a link between the two.  

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