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Background & objectives The Covid-19 pandemic has revolutionised how we receive services, with a huge shift to online delivery. Online health promotion tools could be a cost-effective and safe way to improve population health. We used mixed methods to explore user responses to an online cognitive health tool. Methods 15–28 months after completing an online tool, comprising a cognitive test, lifestyle questionnaire; and dietary and lifestyle behaviour feedback, 4826 participants completed an online survey about their perceptions of it; and questions about their capability, opportunity and motivation for behavioural change developed using the COM-B behaviour change model. We reported how responses to the behaviour change questionnaire predicted decisions to make lifestyle and dietary changes. 24 participants attended focus groups to further explore their responses. Results Most users reported that the tool was useful (88%), with 37% reporting they made lifestyle or dietary changes after using it. More positive responses to questions regarding capability and motivation predicted making changes. Over a third (36%) felt more fearful after completing the tool. In qualitative findings, we identified barriers to engagement across the three COM-B domains: a sense that information was “nothing new” (so did not enhance capability); that “experts don’t agree” and that the tool may not be credible (influencing motivation), and a lack of support from peers and lower availability of healthy food (reducing opportunities for change). Conclusions Future e-health tools will be most effective if they have high credibility, demonstrate advice is evidence-based and provide opportunities for support and follow up.

Background and Objectives The Covid-19 pandemic reduced access to social activities and routine health care that are central to dementia prevention. We developed a group-based, video-call, cognitive well-being intervention; and investigated its acceptability and feasibility; exploring through participants’ accounts how the intervention was experienced and used in the pandemic context. Research Design and Method We recruited adults aged 60+ years with memory concerns (without dementia). Participants completed baseline assessments and qualitative interviews/focus groups before and after the 10-week intervention. Qualitative interview data and facilitator notes were integrated in a thematic analysis. Results 12/17 participants approached completed baseline assessments, attended 100/120 (83.3%) intervention sessions and met 140/170 (82.4%) of goals set. Most had not used video calling before. In the thematic analysis, our overarching theme was social connectedness. Three sub-themes were as follows: Retaining independence and social connectedness: social connectedness could not be at the expense of independence; Adapting social connectedness in the pandemic: participants strived to compensate for previous social connectedness as the pandemic reduced support networks; Managing social connections within and through the intervention: although there were tensions, for example, between sharing of achievements feeling supportive and competitive, participants engaged with various lifestyle changes; social connections supported group attendance and implementation of lifestyle changes. Discussion and Implications Our intervention was acceptable and feasible to deliver by group video-call. We argue that dementia prevention is both an individual and societal concern. For more vulnerable populations, messages that lifestyle change can help memory should be communicated alongside supportive, relational approaches to enabling lifestyle changes.

Semantic diversity quantifies the similarity in the content of contexts a word has been experienced in. Four experiments investigated its effect on lexical and semantic judgments in 9- to 10-year-olds and adults. In Experiment 1, a cross-modal semantic judgment task, participants decided whether a visually presented word matched an audio definition. Both groups were slower to respond to words high in semantic diversity, and this effect was modulated by task demands. Experiment 2 used the same items but in a lexical-decision task. Children were faster to respond to words high in diversity but there was no effect in adults, failing to replicate previous work. Experiment 3 examined possible reasons for this, and Experiment 4 tested the effect of semantic diversity on lexical decision via secondary analysis of 2 large megastudies. Overall, the facilitative effect of semantic diversity on lexical decision was robust. Our findings show that contextual experience influences subsequent lexical processing, consistent with context inducing semantic representations that reflect continuities and gradations in meaning. These gradations are captured by semantic diversity, and in turn, this interacts with task demands to influence behavioral performance. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

To examine the feasibility and acceptability of NIDUS-Family, a 6-8 session manualised, individually tailored, modular intervention supporting independence at home for people with dementia; and explore participants' and facilitators' experiences of the intervention.In this single group multi-site feasibility study, trained, supervised non-clinically qualified graduates (facilitators) delivered NIDUS-Family to family carer and people living with dementia dyads. We recruited participants from GP practices and memory services in London and Bradford. We completed quantitative outcomes pre- and post-intervention; and conducted qualitative interviews with participants and facilitators. Our pre-specified main outcomes were proportion of potential participants approached who agreed to participate, intervention adherence and acceptability to family carers, and facilitator fidelity to the manual.We recruited 16 dyads (57% of those approached); 12 (75%) completed the intervention. Of 12 participants rating intervention acceptability, 9 (75%) agreed or strongly agreed that it had helped; 2 (18%) neither agreed nor disagreed and 1 (8%) disagreed. Mean facilitator fidelity was high (81.5%). Dyads set on average 3.9 goals; these most commonly related to getting out and about and increasing activity/hobby participation (NIDUS-Family was feasible and acceptable to participants. Following refinements, testing in a pragmatic trial is underway.

Semantic diversity – a metric that captures variations in previous contextual experience with a word – influences children’s lexical decision and reading aloud. We investigated the effects of semantic diversity and frequency on children’s reading of words embedded in sentences, while eye movements were recorded. If semantic diversity and frequency reflect different aspects of experience that influence reading in different ways, they should show independent effects and perhaps even different processing signatures during reading. Forty-nine 9-year-olds read sentences containing high/low frequency and high/low diversity words, manipulated orthogonally. We observed independent main effects of both variables, with high frequency and high semantic diversity words being read more easily in target word analyses. Sentence-level analyses indicated that semantic diversity influenced the overall ease of sentence processing whereas frequency did not. These results show that variations in the amount and nature of contextual experience influence how easily words are processed during reading