How do metacognitive beliefs about memory differ between older adults with low and high dementia worry? A focus group...

This study aimed to examine how older adults form beliefs about their memory and how these beliefs are influenced by their level of concern about dementia. Inaccurate beliefs and excessive worrying, indicative of erroneous metacognition, are associated with negative health outcomes. This research can help identify mitigation for these harmful effects.

Qualitative focus groups; thematic analysis.

Focus group discussion with healthy older adults hosted at a university in central London.

35 healthy older individuals (women=29) without any psychiatric or neurological diagnoses, over the age of 65 years (mean 75.31, SD: 6.15). 13 participants were identified as having a high level of worry about dementia and 22 as having low worry. Groups were matched for cognitive performance on the Telephone Mini Addenbrooke's cognitive assessment (Tele-MACE).

Participants were assigned to a focus group depending on their level of worry about dementia. During focus groups, a vignette prompted discussion around lifespan changes in memory and how this affected concerns around memory. This allowed investigation of the differences in beliefs about memory.

Thematic analysis revealed two key themes. First, older adults appear to base their definition of 'normality' of their own memory on comparisons. These comparisons were between themselves and others and between themselves now and their own past self. Despite similar strategies to define 'normality', those with high dementia worry had stricter definitions of what they determined as normal. The second theme described narratives around the 'self' and the 'other'. There was a difference between those with high versus low worry; those with high worry had a strong focus on the 'self', while those with low dementia worry focused on 'others'.

Comparison is a common metacognitive strategy used in forming beliefs about memory. Targeting the use of comparison is potentially valuable in interventions aiming to alleviate older adults' memory concerns. Addressing self-focused thinking, for example, with cognitive behavioural therapy, could improve harmful levels of high worry.