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A human working memory advantage for social network information.
As a social species, humans live in complexly bounded social groups. In order to navigate these networks, humans rely on a set of social-cognitive processes, including social working memory. Here, we designed a novel network memory task to study working memory for social versus non-social network information across 241 participants (18-65 years) in a tightly controlled, preregistered study. We show that humans demonstrate a working memory advantage for social, relative to non-social, network information. We also observed a self-relevant positivity bias, but an 'other' negativity bias. These findings are interpreted in the context of an evolutionary need to belong to one's social group, to identify risks to one's social safety and to appropriately track one's social status within a complex network of social relationships.
Debate: Where to next for universal school-based mental health interventions? Time to move towards more effective alternatives.
There is an urgent need to improve mental health outcomes among young people. One approach taken to address this problem has been the design and delivery of universal school-based prevention, based on therapeutic models such as CBT and mindfulness. Such interventions are delivered to groups of young people, irrespective of risk or need. However, in this commentary, we argue that the initial appeal of universal interventions has not been supported by the evidence: universal school-based prevention is less effective than targeted approaches, often leads to null or unsustained positive effects, has the potential to elicit negative effects and is not well liked by young people themselves. In addition, many young people in each classroom already meet the criteria for a mental disorder, meaning that prevention approaches may not be appropriate or effective for this group. In this commentary, we respond to Birrell et al.'s (2025) paper by arguing that the field should move away from universal prevention and instead invest our limited resources in the refinement and dissemination of interventions with a stronger evidence base, such as one-to-one, targeted and indirect approaches.
Adaptive curiosity about metacognitive ability.
Metacognition provides control and oversight to the process of acquiring and using knowledge. Efficient metacognition is essential to many aspects of daily life, from health care to finance and education. Across three experiments, we found a specific form of curiosity in humans about the quality of their own metacognition, using a novel approach that dissociates perceptual from metacognitive information searches. Observers displayed a strategic balance in their curiosity, alternating between a focus on perceptual accuracy and metacognitive performance. Depending on the context, this metacognitive curiosity was modulated by an internal evaluation of metacognition, leading to increased feedback requests when metacognition was likely to be inaccurate. Using an ideal observer model, we describe how this curiosity trade-off can arise naturally from a recursive evaluation and transformation of decisions' evidence. These results show that individuals are inherently curious about their metacognitive abilities and can compare perceptual and metacognitive precision to fine-tune performance monitoring. We propose that this form of curiosity may reflect humans' drive to refine their self-model. (PsycInfo Database Record (c) 2024 APA, all rights reserved).
Disrupted Time Perception Underlies Motivational Disturbances in Huntington's Disease
Our sense of time is fundamental to interacting with the world in a goal-directed manner, with decisions underpinning goal pursuit utilising timing circuits in the seconds-to-minutes range. A reduction in goal-directed behaviour - apathy - is common in Huntington's disease (HD), but no work has examined whether altered time perception could be a contributing mechanism. We investigated whether timing deficits were evident in HD apathy. Genetically confirmed carriers of the HD mutation (premanifest to mild manifest disease, n = 39) and healthy controls (n = 20) performed a time production task with active (press) and passive (wait) modes of production, alongside clinical and behavioural measures. Overall, people with HD underproduced target times whilst controls performed in near-optimal manner. In HD, there were significant interactions between condition (press/wait) and both apathy and impulsivity (apathy × condition: t = -3.8, p = 0.0002; impulsivity × condition: t = -3.3, p = 0.001). This was driven by people with either of these behavioural disturbances producing shorter times in the passive condition, relative to people without these behaviours. Whilst global timing deficits were evident in HD, further differences were evident as a function of apathy and impulsivity, whereby people thought more time had passed than really had, specifically when passively waiting. Altered time perception when passively waiting may alter estimation of environmental reward rates and subsequent decisions of when to act. Overall, and demonstrated in human neurological disease, we show that timing processes and motivated behaviours are fundamentally linked.
Do meaningful dimensions of childhood adversity exist? Data-driven evidence from two prospective cohort studies.
BACKGROUND: There is not yet a consensus on the best way to conceptualise adverse childhood experiences (ACEs). We used data-driven methods across two populations to examine (a) if there were meaningful dimensions underlying ACEs and (b) whether dimensions were differentially associated with increased risk of adolescent psychopathology. METHODS: Participants were 18,539 British children from the UK Millennium Cohort Study (MCS) and 11,876 American children from the US Adolescent Brain Cognitive Development Study (ABCD). A wide range of ACEs (e.g., abuse, neglect, parental psychopathology, peer victimisation) were measured prospectively from infancy to mid-adolescence using interviews and questionnaires. Internalising and externalising symptoms were assessed with child and/or parent reports during adolescence. RESULTS: Our preregistered exploratory factor analysis revealed four latent dimensions in the MCS (parental threat, deprivation, victimisation, and parental discipline) and ABCD (parental threat, deprivation, victimisation, and traumatic events). All dimensions except deprivation were associated with increased risk for internalising and externalising symptoms. Over and above the other dimensions, victimisation was more strongly associated with internalising (MCS β = .34, 95% CI 0.33-0.36; ABCD β = .11, 95% CI 0.10-0.13) and externalising (MCS β = .31, 95% CI 0.30-0.33; ABCD β = .13, 95% CI 0.11-0.15) symptoms. CONCLUSIONS: Across two distinct populations, we found that ACEs can be captured by common underlying dimensions of parental threat, deprivation, and victimisation, as well as additional sample-specific dimensions. Our findings expand dimensional theories of childhood adversity by suggesting that in addition to threat and deprivation, victimisation is a distinct dimension of adversity that has the strongest associations with adolescent psychopathology.
Research investigating patient and carer psychoeducation needs regarding post-stroke cognition: a scoping review.
OBJECTIVES: To search the literature systematically in order to map and identify gaps in research investigating patient and family member psychoeducation needs regarding post-stroke cognition. DESIGN: Scoping review conducted in line with Joanna Briggs Institute (JBI) recommendations and PRISMA-ScR checklist. METHODS: MEDLINE, PsycINFO, Embase, CINAHL and Scopus were searched on 25 August 2023 for peer-reviewed studies conducted in a high-income country, describing cognition-related psychoeducation needs in stroke survivors and/or family members aged ≥18 years (≥50% of the study population). Two reviewers independently screened titles, abstracts and then full-text articles. One reviewer extracted pre-defined study characteristics and findings. These data were verified by a second reviewer. Synthesis involved descriptive statistics and thematic analysis. RESULTS: Searches identified 8115 articles, of which 30 were included. Articles were published between 1996 and 2023. Studies were conducted in Australia (n=7), USA (n=6), UK (n=5), Canada (n=3), New Zealand (n=3), Ireland (n=2), Netherlands (n=2), South Korea (n=1) and Sweden (n=1). Most studies (n=21) used an exclusively qualitative approach but six combined qualitative and quantitative methods. The post-stroke period under investigation varied, including the acute/subacute stage (n=10) and the chronic stage (n=3), though many articles did not state the timepoint explicitly. Research was conducted with stroke survivors only (n=7), family members only (n=12) and both stroke survivors and family members (n=11). Qualitative analysis suggested participants wanted psychoeducation about cognitive impairment, including recovery expectations, treatment/therapy options and signposting to services/resources available. Hopeful information was important. Factors potentially impacting cognition-related psychoeducation needs were identified as time since stroke and family member relationship. Most articles focused on aphasia with very few studies considering other cognitive domains (eg, memory, attention, executive function). CONCLUSIONS: The need for psychoeducation regarding cognition is well evidenced throughout the post-stroke care continuum, though most research has focused on language impairments. Further research investigating other cognitive impairments (eg, impairments in memory, attention and executive function) is required.
Exploring peer emotion transmission in foreign language classrooms: A social psychological investigation using mixed methods
Drawing on theories of interpersonal emotion transfer (Parkinson, 2020) and the control-value theory of achievement emotions (Pekrun, 2006), the present research employed a mixed-methods approach to examine how emotions are transmitted among peers in foreign language (FL) classrooms. We collected quantitative data from 308 freshmen using self-report questionnaires and qualitative data from 18 freshmen using semi-structured interviews. Results of structural equation modelling showed that students’ perceptions of peer FL enjoyment, anxiety, and boredom were positively related to their own corresponding emotions. Both control and value appraisals partially mediated the relations between perceived peer FL enjoyment and anxiety and students’ corresponding emotions. However, value appraisal was the only significant mediator of the relation between perceived peer FL boredom and student boredom. Interview findings further supported the operation of emotion contagion and social appraisal in FL peer emotion transmission. In addition, the qualitative data revealed that perceptions of peer FL emotions may also activate students’ discordant emotions as a result of social comparison processes. Interpretations of findings are discussed, along with future directions and pedagogical implications.
A manifesto for a globally diverse, equitable, and inclusive open science.
The field of psychology has rapidly transformed its open science practices in recent years. Yet there has been limited progress in integrating principles of diversity, equity and inclusion. In this Perspective, we raise the spectre of Questionable Generalisability Practices and the issue of MASKing (Making Assumptions based on Skewed Knowledge), calling for more responsible practices in generalising study findings and co-authorship to promote global equity in knowledge production. To drive change, researchers must target all four key components of the research process: design, reporting, generalisation, and evaluation. Additionally, macro-level geopolitical factors must be considered to move towards a robust behavioural science that is truly inclusive, representing the voices and experiences of the majority world (i.e., low-and-middle-income countries).
1. Introduction
Reciprocity lies at the heart of social cognition, and with it so does the encoding of reciprocity in language via reciprocal constructions. Despite the prominence of strong universal claims about the semantics of reciprocal constructions, there is considerable descriptive literature on the semantics of reciprocals that seems to indicate variable coding and subtle cross-linguistic differences in meaning of reciprocals, both of which would make it impossible to formulate a single, essentialising definition of reciprocal semantics. These problems make it vital for studies in the semantic typology of reciprocals to employ methodologies that allow the relevant categories to emerge objectively from cross-linguistic comparison of standardised stimulus materials. We situate the rationale for the 20-language study that forms the basis for this book within this empirical approach to semantic typology, and summarise some of the findings.
2. The semantics of reciprocal constructions across languages
How similar are reciprocal constructions in the semantic parameters they encode? We investigate this question by using an extensional approach, which examines similarity of meaning by examining how constructions are applied over a set of 64 videoclips depicting reciprocal events (Evans et al. 2004). We apply statistical modelling to descriptions from speakers of 20 languages elicited using the videoclips. We show that there are substantial differences in meaning between constructions of different languages.
Multi-level encoding of reward, effort, and choice across the frontal cortex and basal ganglia during cost-benefit decision-making.
Adaptive value-guided decision-making requires weighing up the costs and benefits of pursuing an available opportunity. Though neurons across frontal cortical-basal ganglia circuits have been repeatedly shown to represent decision-related parameters, it is unclear whether and how this information is coordinated. To address this question, we performed large-scale single-unit recordings simultaneously across 5 medial/orbital frontal and basal ganglia regions as rats decided whether to pursue varying reward payoffs available at different effort costs. Single neurons encoding combinations of decision variables (reward, effort, and choice) were represented within all recorded regions. Coactive cell assemblies, ensembles of neurons that repeatedly coactivated within short time windows (<25 ms), represented the same decision variables despite the members often having diverse individual coding properties. Together, these findings demonstrate a multi-level encoding structure for cost-benefit computations where individual neurons are coordinated into larger assemblies that can represent task variables independently of their constituent components.
Performance and validation of a digital memory test across the Alzheimer's disease continuum.
Digital cognitive testing using online platforms has emerged as a potentially transformative tool in clinical neuroscience. In theory, it could provide a powerful means of screening for and tracking cognitive performance in people at risk of developing conditions such as Alzheimer's disease. Here we investigate whether digital metrics derived from an in-person administered, tablet-based short-term memory task-the 'What was where?' Oxford Memory Task-were able to clinically stratify patients at different points within the Alzheimer's disease continuum and to track disease progression over time. Performance of these metrics compared to traditional neuropsychological pen-and-paper screening tests of cognition was also analysed. A total of 325 people participated in this study: 49 patients with subjective cognitive decline, 57 with mild cognitive impairment, 63 with Alzheimer's disease dementia and 156 elderly healthy controls. Most digital metrics were able to discriminate between healthy controls and patients with mild cognitive impairment and between mild cognitive impairment and Alzheimer's disease patients. Some, including Absolute Localization Error, also differed significantly between patients with subjective cognitive decline and mild cognitive impairment. Identification accuracy was the best predictor of hippocampal atrophy, performing as well as standard screening neuropsychological tests. A linear support vector model combining digital metrics achieved high accuracy and performed at par with standard testing in discriminating between elderly healthy controls and subjective cognitive decline (area under the curve 0.82) and between subjective cognitive decline and mild cognitive impairment (area under the curve 0.92), while performing worse in classifying between mild cognitive impairment and Alzheimer's disease patients (area under the curve 0.75). Memory imprecision was able to predict cognitive decline on standard cognitive tests over one year. Overall, these findings show how it might be possible to use a digital memory test in clinics and clinical trial contexts to stratify and track performance across the Alzheimer's disease continuum.
Inferring when to move.
Most of our movement consists of sequences of discrete actions at regular intervals-including speech, walking, playing music, or even chewing. Despite this, few models of the motor system address how the brain determines the interval at which to trigger actions. This paper offers a theoretical analysis of the problem of timing movements. We consider a scenario in which we must align an alternating movement with a regular external (auditory) stimulus. We assume that our brains employ generative world models that include internal clocks of various speeds. These allow us to associate a temporally regular sensory input with an internal clock, and actions with parts of that clock cycle. We treat this as process of inferring which clock best explains sensory input. This offers a way in which temporally discrete choices might emerge from a continuous process. This is not straightforward, particularly if each of those choices unfolds during a time that has a (possibly unknown) duration. We develop a route for translation to neurology, in the context of Parkinson's disease-a disorder that characteristically slows down movements. The effects are often elicited in clinic by alternating movements. We find that it is possible to reproduce behavioural and electrophysiological features associated with parkinsonism by disrupting specific parameters-that determine the priors for inferences made by the brain. We observe three core features of Parkinson's disease: amplitude decrement, festination, and breakdown of repetitive movements. Our simulations provide a mechanistic interpretation of how pathology and therapeutics might influence behaviour and neural activity.
Moderators of the Effects of a Digital Parenting Intervention on Child Conduct and Emotional Problems Implemented During the COVID-19 Pandemic: Results From a Secondary Analysis of Data From the Supporting Parents and Kids Through Lockdown Experiences (SPARKLE) Randomized Controlled Trial.
BACKGROUND: A smartphone app, Parent Positive, was developed to help parents manage their children's conduct and emotional problems during the COVID-19 pandemic. A randomized controlled trial, Supporting Parents and Kids Through Lockdown Experiences (SPARKLE), found Parent Positive to be effective in reducing children's emotional problems. However, app effectiveness may be influenced by a range of child, family, socioeconomic, and pandemic-related factors. OBJECTIVE: This study examined whether baseline factors related to the child, family, and socioeconomic status, as well as pandemic-related disruption circumstances, moderated Parent Positive's effects on child conduct and emotional problems at 1- and 2-month follow-up. METHODS: This study was a secondary exploratory analysis of SPARKLE data. The data set included 646 children (4-10 years of age) with parents randomized to either Parent Positive (n=320) or follow-up as usual (n=326). Candidate baseline moderators included child age, gender, attention-deficit/hyperactivity disorder symptoms, parental psychological distress, family conflict, household income, employment status, household overcrowding, and pandemic-related disruption risk (ie, homeschooling, lockdown status, and isolation status). Child conduct and emotional problem outcomes measured at 1- (T2) and 2-months (T3) post randomization were analyzed using linear mixed-effects analysis of covariance models adjusting for baseline (T1) measure of outcome and including intervention and intervention by time point interaction terms allowing for different effects at the 2 time points. Moderation of intervention effects by baseline factors was assessed by replacing the intervention by time interaction terms with intervention by time point by baseline moderator interaction terms. RESULTS: Child gender was a significant moderator of the Parent Positive versus follow-up as usual effect on emotional problems (B=0.72, 95% CI 0.12-1.33; P=.02). Specifically, the effect of Parent Positive was close to significant (T2: B=-0.41, 95% CI -0.82 to 0.0004; P=.05) or significant (T3: B=-0.76, 95% CI -1.22 to -0.30; P