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. 2020 Oct 9;20(1):500.
doi: 10.1186/s12888-020-02884-7.

Repetitive negative thinking is associated with subjective cognitive decline in older adults: a cross-sectional study

Marco Schlosser  1   2 , Harriet Demnitz-King  3 , Tim Whitfield  3 , Miranka Wirth  4 , Natalie L Marchant  3
Affiliations

Repetitive negative thinking is associated with subjective cognitive decline in older adults: a cross-sectional study

Marco Schlosser et al. BMC Psychiatry. .

Abstract

Background: In the absence of a cure or effective treatment for dementia, attention has shifted towards identifying risk factors for prevention. Subjective Cognitive Decline (SCD) describes self-perceived worsening of cognition despite unimpaired performance on neuropsychological tests. SCD has been associated with an increased dementia risk and steeper memory decline. Repetitive negative thinking (RNT) is a transdiagnostic process that manifests across several mental health disorders associated with increased vulnerability to dementia. RNT has thus been proposed as a candidate marker of risk for dementia and, relatedly, could contribute to the manifestation of SCD. We aimed to investigate the relationship between SCD and RNT alongside other proposed psychological risk/protective factors for dementia and cognitive decline.

Methods: In a cross-sectional online survey, 491 older adults (mean = 64.9 years, SD = 4.2; 63.1% female) completed measures of RNT, personality traits, purpose in life, worry, rumination, and meditation practice. SCD was assessed continuously via self-perceived cognitive function (Neuro-QoL) and categorically via endorsement (yes/no) of memory complaints. Regression models, using a stepwise backwards elimination, were built to assess associations between SCD, demographics, and all risk/protective factors.

Results: A total of 24.2% of participants reported memory complaints. In the final prediction models, RNT was the only psychological variable associated with lower self-perceived cognitive function and with a higher likelihood of memory complaints.

Conclusions: This study empirically corroborates the theoretical relationship between SCD and RNT. Longitudinal studies are needed to establish whether RNT is a prodromal symptom or an independent risk factor, and whether RNT can be a promising construct for future research on SCD and dementia risk.

Keywords: Cognitive function; Dementia; Memory complaints; Psychological risk factors; Repetitive negative thinking; Subjective cognitive decline.

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Conflict of interest statement

The authors declare that they have no competing interests.

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