A Psychosocial Model of COVID-19 Vaccination: Antecedent and Concurrent Effects of Demographics, Traits, Political Beliefs, Vaccine Intention, Information Sources, Mandates, and Flu Vaccine History.

BACKGROUND: To date, research investigating psychosocial correlates of COVID-19 vaccination has been cross-sectional, parochial, and/or reliant upon non-stratified international samples, resulting in difficulty in clarifying the contributions of various vaccination-related influences. PURPOSE: The present study tested a novel integration of prospective and concurrent associations of demographic and dispositional tendencies, intervening illness and preventive beliefs, vaccine intention, illness experiences, and concurrent contextual vaccine-related influences with subsequent COVID-19 vaccination. METHODS: The preregistered study used a stratified online U.S. sample (N = 500), with assessments aligned to (a) "15 days to slow the spread" in March 2020, (b) vaccine authorization and major case/mortality surge during December 2020 and January 2021, and (c) the period following full vaccine approval in August 2021 during the third major/case mortality surge during September and October 2021. RESULTS: Path modeling showed the absence of children in the household and greater education were prospective predictors of vaccination. Trait openness and less conservative political beliefs showed indirect prospective associations with vaccination via stronger intermediating vaccine intention. Contextual vaccine-related influences of vaccine-related information sources, employer mandates, and flu vaccine history also showed direct associations with vaccination. In contrast to expectations, lower conscientiousness showed a direct prospective association with vaccination. CONCLUSIONS: Controlling for interrelations among study variables, the results of the integrative psychosocial model clarified the unique contributions and pathways from antecedent characteristics to vaccination while accounting for vaccine-related contextual influences, providing further direction for refining the timing and content of public health messaging for vaccination.

The present study used 3 assessments across 18 months to investigate psychosocial and behavioral predictors of COVID-19 vaccination in a stratified U.S. sample. Consistent with preregistered hypotheses, the absence of children in the household and greater education assessed in March 2020, predicted vaccination by the fall of 2021. Greater vaccination intention during the Delta surge from December 2020 to January 2021 (prior to widespread vaccine availability), predicted vaccination by the fall of 2021. In addition, greater trait openness (curious, reflective) and less conservative political beliefs assessed during March 2020, predicted vaccination through stronger vaccination intention. Employer vaccine mandates, a stronger history of flu vaccination, and the use of more reliable health information sources for COVID-19 vaccines also predicted greater vaccination. Contrary to expectations, greater conscientiousness (careful, thorough) assessed during March 2020, predicted less vaccination by the fall of 2021. Notably, the results suggest that for some parents, general vaccine concerns, however, misinformed, may have extended to the consideration of COVID-19 vaccines for themselves. Moreover, for more careful and thorough individuals, novel vaccine hesitancy may be an expression of perceived harm avoidance that is specific to the vaccine, rather than to perceived risks of infection or illness.

Personality Science in the Digital Age: The Promises and Challenges of Psychological Targeting for Personalized Behavior-Change Interventions at Scale.

With the rapidly growing availability of scalable psychological assessments, personality science holds great promise for the scientific study and applied use of customized behavior-change interventions. To facilitate this development, we propose a classification system that divides psychological targeting into two approaches that differ in the process by which interventions are designed: audience-to-content matching or content-to-audience matching. This system is both integrative and generative: It allows us to (a) integrate existing research on personalized interventions from different psychological subdisciplines (e.g., political, educational, organizational, consumer, and clinical and health psychology) and to (b) articulate open questions that generate promising new avenues for future research. Our objective is to infuse personality science into intervention research and encourage cross-disciplinary collaborations within and outside of psychology. To ensure the development of personality-customized interventions aligns with the broader interests of individuals (and society at large), we also address important ethical considerations for the use of psychological targeting (e.g., privacy, self-determination, and equity) and offer concrete guidelines for researchers and practitioners.

COVID-19 vaccine intention: Prospective and concurrent tests of a disposition-belief-motivation framework.

OBJECTIVE: The present study tested a novel integration of prospective and concurrent associations of demographic factors, traits, political orientation, coping strategies, infection and preventive beliefs, preventive behaviors, coronavirus disease 2019 (COVID-19) symptoms, exposure, and viral testing with COVID-19 vaccine intention. METHOD: The preregistered study used a stratified online U.S. sample (N = 500). Three assessments were aligned with (a) "15 days to slow the spread" in March 2020, (b) the first mortality surge in April/May 2020, and (c) the vaccine authorization and major case/mortality surge during December 2020 and January 2021. RESULTS: Consistent with contemporaneous polling in December 2020, 66.4% of participants indicated they intended to receive an approved vaccine. Allowing for covarying interrelations, path modeling showed direct associations of greater education (ß = .11, p < .01), the absence of child(ren) in the household (ß = -.14, p < .001), more liberal political orientation (ß = -.17, p < .001), stronger concurrent perceived norms for preventive behaviors (ß = .23, p < .001), and more frequent concurrent mask wearing (ß = .23, p < .001) with stronger vaccine intention. Prospective and concurrent trait, coping strategy, and sickness experience measures were not associated with intention. CONCLUSIONS: The close alignment of assessments with the public health timeline and the prospective and concurrent design provide needed clarity for the effects of stable demographic and dispositional factors (educational, parental, ideological) and more malleable preventive beliefs and behaviors, indicating potentially fruitful pathways to bolster novel vaccine intention. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Realistic effort action plans (REAP) for exercise among underactive and inactive university students: A randomized trial.

Objective: The efficacy of effort appraisal exercise action plans was tested among underactive and inactive university students (N = 221). Methods: Students were randomized across three conditions (information, action planning, or realistic effort action planning (REAP)) and participated in psychoeducational small-group sessions. Students returned after a three-week pedometer tracking period and at two and six months to assess self-reported exercise. Results: Greater three-week step averages were observed for the action planning and REAP conditions compared to the information condition. The information condition showed small-sized exercise increases at two and six months (d = .26, d = .35, ps < .05); the action planning condition showed a small-sized increase at six months (d = . 36, p < 05); and the REAP condition showed medium-sized increases at two and six months (d = .40, d = . 46, ps < .05). Conclusions: The findings provide initial evidence showing exercise action plans for college students might be improved with explicit appraisals of prior effort and persistence.

Spring 2020 COVID-19 Surge: Prospective Relations between Demographic Factors, Personality Traits, Social Cognitions and Guideline Adherence, Mask Wearing, and Symptoms in a U.S. Sample.

BACKGROUND: To date, much of the research on individual difference correlates of coronavirus guideline adherence is cross-sectional, leaving prospective associations between these factors unaddressed. Additionally, investigations of prospective predictors of mask-wearing, COVID-19 symptoms, and viral testing remain wanting. PURPOSE: The present study examined prospective relations between demographic factors, personality traits, social cognitions and guideline adherence, mask-wearing, symptoms, and viral testing in a U.S. sample (N = 500) during the initial surge of COVID-19 deaths in the United State between late March and early May 2020. METHODS: Guided by a disposition-belief-motivation framework, correlational analyses, and path models tested associations among baseline personality traits, guideline adherence social cognitions, health beliefs, guideline adherence and follow-up guideline adherence, mask-wearing, symptom counts, and 30-day viral testing. RESULTS: Modeling results showed greater baseline agreeableness, conscientiousness, and extraversion were associated with more frequent baseline guideline adherence. More liberal political beliefs, greater guideline adherence intentions, and more frequent guideline adherence at baseline predicted more frequent mask-wearing at follow-up. Sex (female), lower perceived health, and greater neuroticism at baseline predicted greater symptom counts at follow-up. Reports of viral testing were quite low (1.80%), yet were consistent with concurrent national reporting and limited availability of testing. CONCLUSIONS: Results show how inconsistencies and politicization of health policy communication were concomitant with the effects of individual-level political beliefs on mask-wearing during the initial surge. The results further clarify how personality traits related to social responsibility (i.e., agreeableness, conscientiousness) are associated with following new norms for prescribed behaviors and how symptom reporting can be as much a marker of perceived health as emotional stability.

Demographic, personality, and social cognition correlates of coronavirus guideline adherence in a U.S. sample.

OBJECTIVE: The present study examined patterns and psychosocial correlates of coronavirus guideline adherence in a U.S. sample (N = 500) during the initial 15-day period advocated by the White House Coronavirus Task Force. METHOD: Descriptive and correlational analyses were used to examine the frequency of past 7-day adherence to each of 10 guidelines, as well as overall adherence. Guided by a disposition-belief-motivation model of health behavior, path analyses tested associations of personality traits and demographic factors to overall adherence via perceived norms, perceived control, attitudes, and self-efficacy related to guideline adherence, as well as perceived exposure risk and perceived health consequence if exposed. RESULTS: Adherence ranged from 94.4% reporting always avoiding eating/drinking inside bars/restaurants/food courts to 13.6% reporting always avoiding touching one's face. Modeling showed total associations with overall adherence for greater conscientiousness (ß = .191, p < .001), openness (ß = .098, p < .05), perceptions of social endorsement (ß = .202, p < .001), positive attitudes (ß = .105, p < .05), self-efficacy (ß = .234, p < .001), and the presence versus absence or uncertainty of a shelter-in-place order (ß = .102, p < .01). Age, self-rated health, sex, education, income, children in the household, agreeableness, extraversion, neuroticism, perceived exposure risk, and perceived health consequence showed null-to-negligible associations with overall adherence. CONCLUSIONS: The results clarify adherence frequency, highlight characteristics associated with greater adherence, and suggest the need to strengthen the social contract between government and citizenry by clearly communicating adherence benefits, costs, and timelines. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

Resting-state functional brain connectivity in a predominantly African-American sample of older adults: exploring links among personality traits, cognitive performance, and the default mode network.

The personality traits of neuroticism, openness, and conscientiousness are relevant factors for cognitive aging outcomes. The present study examined how these traits were associated with cognitive abilities and corresponding resting-state functional connectivity (RSFC) of the default mode network (DMN) in an older and predominantly minority sample. A sample of 58 cognitively unimpaired, largely African-American, older adults (M age = 68.28 ± 8.33) completed a standard RSFC magnetic resonance imaging sequence, a Big Five measure of personality, and delayed memory, Stroop, and verbal fluency tasks. Personality trait associations of within-network connectivity of the posterior cingulate cortex (PCC), a hub of the DMN, were examined using a seed-based approach. Trait scores were regressed on cognitive performance (delayed memory for neuroticism, Stroop for conscientiousness, and verbal fluency for openness). Greater openness predicted greater verbal fluency and greater RSFC between the PCC and eight clusters, including the medial prefrontal cortex, left middle frontal gyrus, and precuneus. Greater PCC-precuneus connectivity predicted greater verbal fluency. Neuroticism and conscientiousness did not significantly predict either cognitive performance or RSFC. Although requiring replication and elaboration, the results implicate openness as a contributing factor to cognitive aging via concomitant cognitive performance and connectivity within cortical hubs of the DMN and add to the sparse literature on these variables in a diverse group of older adults.

Personality Traits, Coping, Health-related Behaviors, and Cumulative Physiological Health in a National Sample: 10 Year Prospective Effects of Conscientiousness via Perceptions of Activity on Allostatic Load.

BACKGROUND: Personality traits, coping styles, and health-related behaviors show associations with various aspects of health. However, integrative life-course investigations of pathways by which these factors might affect later cumulative physiological health risk remain sparse. PURPOSE: To investigate prospective associations of personality traits via coping styles and health-related behaviors on allostatic load in a national sample. METHODS: Using data from the Midlife in the United States study (MIDUS; N = 1,054), path analyses were used to test direct and indirect associations (via coping styles, smoking, frequency of alcohol consumption, leisure-time physical activity, and perceptions of activity) of personality traits on a latent measurement model of allostatic load informed by 10 biomarkers associated with cardiovascular, inflammation, glucose, and lipid subsystems. RESULTS: Direct 10 year associations of greater conscientiousness on healthier allostatic load and greater extraversion on less healthy allostatic load were observed. Consistent with hypothesized behavioral pathways, relationships between conscientiousness and extraversion on allostatic load were prospectively mediated by greater perceptions of activity. Physical activity and more frequent alcohol use were associated with healthier allostatic load but did not act as prospective mediators. CONCLUSIONS: The results provide further evidence of conscientiousness' standing as a marker of health via cumulative physiological health. Moreover, a greater perception of activity was identified as a pathway through which conscientious individuals experienced healthier physiological profiles over time. Examining a more detailed picture of the psychosocial mechanisms leading to development of health risk, as was found with perceptions of activity, remains an important area for future research.

Testing a brief motivational-interviewing educational commitment module for at-risk college drinkers: A randomized trial.

BACKGROUND: The goal of the present study was to test the drink and harm reduction effects of a novel educational commitment (EC) module as a complement to a standard brief MI protocol (i.e., the Brief Alcohol Screening and Intervention for College Students; BASICS, Dimeff, Baer, Kivlahan, & Marlatt, 1999). METHODS: Using a randomized trial design, 180 university students were assigned to one of three conditions: Information, BASICS, or BASICS+EC. Participants completed an alcohol consumption interview and measures of alcohol-related problems, partying decision-making, subjective student role investment, and self-control-related traits at baseline and at two- and nine-month follow-ups. RESULTS: Linear models showed significant condition effects for two-month and nine-month drink quantity, but not for alcohol problems/consequences. Secondary outcome analyses showed significant condition effects for two-month high-risk high-reward partying decision-making and nine-month conscientiousness. Somewhat larger-sized decreases in consumption were observed at two months for the BASICS+EC condition compared to the BASICS condition, although these differences were not present at nine months. CONCLUSIONS: The differential efficacy between the BASICS and BASICS+EC conditions compared to the Information condition reinforces the utility of in-person feedback modalities as more intensive indicated prevention strategies for at-risk college drinkers. The limited differential efficacy for BASICS+EC compared to BASICS suggests a brief MI module for the academic/vocational aspects of the student role is not associated with greater long-term drink and harm reduction. Future research should examine more intensive educational commitment modalities, the utility of on-going academic goal and action feedback, and mechanisms of differential efficacy across intervention groups.

Functional independence after acquired brain injury: Prospective effects of health self-efficacy and cognitive impairment.

OBJECTIVE: To examine how health self-efficacy and cognitive impairment severity relate to functional independence after acquired brain injury (ABI). DESIGN: Observational. SETTING: Outpatient rehabilitation hospital. PARTICIPANTS: Seventy-five adults with predominately stroke or traumatic brain injury who were beginning a course of occupational therapy. MAIN MEASURES: Health self-efficacy was assessed with the Self-Rated Abilities for Health Practices. Cognitive functioning was assessed via a composite z score of neuropsychological tests. Trait affectivity was assessed with the Positive and Negative Affect Schedule. Functional independence was assessed with the Barthel Index and Lawton Instrumental Activities of Daily Living Scale. RESULTS: Health self-efficacy correlated moderately with functional independence. A moderation threshold effect was detected that revealed for whom health self-efficacy predicted functional independence. Among participants with normal to mildly impaired cognition (>-2 z cognitive composite), health self-efficacy correlated positively with functional independence, which held after accounting for trait affectivity. In contrast, health self-efficacy was not correlated with functional independence among participants with greater impairment (<-2 z cognitive composite). CONCLUSIONS: Health self-efficacy predicts functional independence and may serve as a protective factor after ABI among individuals with relatively intact cognition. However, health self-efficacy does not predict functional independence among individuals with moderate or severe cognitive impairment, possibly due to limited self-awareness. This study extends the literature linking health self-efficacy with rehabilitation outcomes and reinforces the need for promoting self-management in ABI. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

Lower Trait Stability, Stronger Normative Beliefs, Habitual Phone Use, and Unimpeded Phone Access Predict Distracted College Student Messaging in Social, Academic, and Driving Contexts.

The goal of the present study was to test two models of phone messaging behaviors among college students-a sociocognitive connection model and a cybernetic personality system model-across three contexts, where messaging behaviors represented disengagement from the primary context: a meal time with friends, attending class, and driving. Using a sample of university students (N = 634), path analyses with boot-strapping procedures were used to model direct and indirect effects of behavioral, social cognition, and personality trait predictors of primary context disengagement via message checking, message reading, and message sending behaviors. Internal and comparative model fit information showed the cybernetic personality system model represented the data well across all three contexts. Across the contexts, phone related habits and normative beliefs about phone usage mediated relations between personality traits and messaging behaviors. In addition, stronger normative beliefs for messaging behaviors and stronger phone related habits predicted unimpeded physical phone access across the contexts. Across contexts, more frequent messaging behaviors were most strongly predicted by the variance shared by low trait self-discipline, high trait anxiety, and high trait altruism via phone-related habits. The results are discussed in terms of the predictive utility of testing process models of messaging behaviors across varying contexts, as well as possible forms of intervention for reducing primary context disengagement via messaging behaviors.

Decisions to Attend and Drink at Party Events: The Effects of Incentives and Disincentives and Lifetime Alcohol and Antisocial Problems.

BACKGROUND: Alcohol use disorders are associated with patterns of impulsive/risky decision making on behavioral economic decision tasks, but little is known about the factors affecting drinking-related decisions. METHODS: The effects of incentives and disincentives to attend and drink at hypothetical alcohol-related party events as a function of lifetime (LT) alcohol and antisocial problems were examined in a sample of 434 young adults who varied widely in LT alcohol and antisocial problems. RESULTS: Moderate and high disincentives substantially discouraged decisions to attend the party events and were associated with decisions to drink less at the party events. High versus low party incentives were associated with more attendance decisions. LT antisocial problems were associated with being less deterred from attending by moderate and high disincentives. LT alcohol problems were associated with greater attendance at high party incentive contexts. LT alcohol problems were associated with drinking more at the majority of events; however, the results indicate that young adults with high levels of alcohol problems moderate their drinking in response to moderate and high disincentives. Finally, attendance and drinking decisions on this hypothetical task were significantly related to actual drinking practices. CONCLUSIONS: The results suggest that antisocial symptoms are associated with a reduced sensitivity to the potential negative consequences of drinking, while alcohol problems are associated with a greater sensitivity to the rewarding aspects of partying. The results also underline the value of directly assessing drinking-related decisions in different hypothetical contexts as well as assessing decisions about attendance at risky drinking events in addition to drinking amount decisions.

Social Media Membership, Browsing, and Profile Updating in a Representative U.S. Sample: Independent and Interdependent Effects of Big Five Traits and Aging and Social Factors.

Guided by cybernetic perspectives on personality, the present work used a representative sample of U.S. adults (N = 992) to examine Big Five personality traits and social and aging factors as predictors of social media network membership and past-month browsing/searching and profile updating among members. The results showed adults who were less extraverted and less neurotic and who reported greater physical limitations were less likely to be members. Moreover, extraverted adults without partners were more likely to be members than introverted adults without partners. Among members, the results showed extraverted and emotionally stable younger and older adults reported a similar frequency of profile updating. In contrast, older adults with all other combinations of extraversion and neuroticism showed a reduced frequency of profile updating compared to younger adults. The findings are discussed in terms of social media involvement as a response of a self-regulatory system of personality adaptation.

School Investment, Drinking Motives, and High-Risk, High-Reward Partying Decisions Mediate the Relationship Between Trait Self-Control and Alcohol Consumption Among College Drinkers.

OBJECTIVE: Research has shown trait self-control, neuroticism, and coping and enhancement drinking motives to be predictors of alcohol consumption among college students. Recent research also provides evidence for the effects of role investment and role-based alcohol consumption-decision making (i.e., partying decisions). The goal of the present study was to clarify the organization and contributions of these multifarious influences on college student drinking. METHOD: College students (N = 355; 51.8% female) with a heterogeneous prevalence of alcohol dependence completed measures of trait self-control; neuroticism; coping and enhancement drinking motives; subjective college student role investment, satisfaction, and stress; role-based partying scenarios; and a typical weekly alcohol consumption interview. Internal and comparative fit indices for alternative path models were evaluated and bootstrapping procedures were used to examine indirect effects. RESULTS: Modeling results favored a more stratified organization, where (a) the association between trait self-control and consumption was mediated by drinking motives and partying decisions, (b) the association between neuroticism and consumption was mediated by coping motives, and (c) the association between role investment and consumption was mediated by partying decisions. The associations between motives and consumption were not mediated by partying decisions. CONCLUSIONS: The results provide support for disinhibitory and distress pathways to college student drinking, where impulsive and anxious students are more likely to drink excessively because of more frequent mood-affecting drinking goals, less academic involvement, and/or more frequent decisions to attend parties where negative academic consequences are likely but where perceived rewarding alcohol-related and social features are present.

Testing Theory of Planned Behavior and Neo-Socioanalytic Theory models of trait activity, industriousness, exercise social cognitions, exercise intentions, and physical activity in a representative U.S. sample.

Prior research identified assorted relations between trait and social cognition models of personality and engagement in physical activity. Using a representative U.S. sample (N = 957), the goal of the present study was to test two alternative structural models of the relationships among the extraversion-related facet of activity, the conscientiousness-related facet of industriousness, social cognitions from the Theory of Planned Behavior (perceived behavioral control, affective attitudes, subjective norms, intentions), Social Cognitive Theory (self-efficacy, outcome expectancies), and the Transtheoretical Model (behavioral processes of change), and engagement in physical activity. Path analyses with bootstrapping procedures were used to model direct and indirect effects of trait and social cognition constructs on physical activity through two distinct frameworks - the Theory of Planned Behavior and Neo-Socioanalytic Theory. While both models showed good internal fit, comparative model information criteria showed the Theory-of-Planned-Behavior-informed model provided a better fit. In the model, social cognitions fully mediated the relationships from the activity facet and industriousness to intentions for and engagement in physical activity, such that the relationships were primarily maintained by positive affective evaluations, positive expected outcomes, and confidence in overcoming barriers related to physical activity engagement. The resultant model - termed the Disposition-Belief-Motivation model- is proposed as a useful framework for organizing and integrating personality trait facets and social cognitions from various theoretical perspectives to investigate the expression of health-related behaviors, such as physical activity. Moreover, the results are discussed in terms of extending the application of the Disposition-Belief-Motivation model to longitudinal and intervention designs for physical activity engagement.

Activity mediates conscientiousness' relationship to diurnal cortisol slope in a national sample.

OBJECTIVE: The present study explored pathways from the personality traits of neuroticism and conscientiousness through health-related behaviors to diurnal patterns of the stress hormone cortisol using data from a large national study. METHOD: Using prospective data from the Midlife in the United States (MIDUS II) study and the National Study of Daily Experiences (NSDE II, a MIDUS substudy), hierarchical linear modeling (HLM) and Monte Carlo estimation for multilevel model mediation were used to test direct and indirect effects (via general activity level, moderate and vigorous physical activity, lifetime history of regular smoking, and alcohol consumption) of neuroticism and conscientiousness on cortisol at wakeup, diurnal cortisol slope, and cortisol awakening response (N = 960). RESULTS: Initial HLM models showed greater levels of conscientiousness were associated with steeper (i.e., healthier) diurnal cortisol slope. Consistent with a hypothesized indirect biobehavioral pathway, when controlling for demographic factors, cortisol-related medications, daily stressors, and positive affect, HLM models showed the relationship between conscientiousness and diurnal cortisol slope was mediated by general activity levels. Lifetime history of smoking was associated with flatter diurnal cortisol slope, but did not mediate the effect of conscientiousness on diurnal cortisol slope. No effects were found for neuroticism. CONCLUSIONS: The results support a psychophysiological model of resilience--one that provides a more complete rendering of the health-protective mechanisms of conscientiousness via hypothalamic-pituitary-adrenal axis functioning. Specifically, the mediated pathway suggests greater engagement in the activities of day-to-day life are an instrumental means by which conscientious individuals experience healthier patterns of stress hormone secretion.

Openness, neuroticism, conscientiousness, and family health and aging concerns interact in the prediction of health-related Internet searches in a representative U.S. sample.

Recent estimates suggest 60% of the U.S. adult population uses the Internet to find health-related information. The goal of the present study was to model health-related Internet searches as a function of an interdependent system of personality adaptation in the context of recent health and aging-related concerns. Assessments of background factors, Big Five personality traits, past-month health and aging-related concerns, and the frequency of past-month health-related Internet searches (via Google, Yahoo, AOL, Bing, or some other search engine) were obtained from a representative U.S. sample (N = 1,015). Controlling for background factors, regression analyses showed more frequent health-related Internet searches were predicted by a drive for exploration and investigation (high openness), as well as alarm sensitivity (high openness and high neuroticism) and an anticipatory inclination (high openness and high conscientiousness) in the context of recent problems with aging parents and recent health concerns for a family member. Consistent with interdependent models of personality adaptation, as well as prior evidence for "surrogate" health-related Internet searches, the results suggest a personality process model of search behavior that is partially dependent upon dispositional levels of exploration, emotional stability, control, and health and aging concerns for family members.

Reliable gains? Evidence for substantially underpowered designs in studies of working memory training transfer to fluid intelligence.

In recent years, cognitive scientists and commercial interests (e.g., Fit Brains, Lumosity) have focused research attention and financial resources on cognitive tasks, especially working memory tasks, to explore and exploit possible transfer effects to general cognitive abilities, such as fluid intelligence. The increased research attention has produced mixed findings, as well as contention about the disposition of the evidence base. To address this contention, Au et al. (2014) recently conducted a meta-analysis of extant controlled experimental studies of n-back task training transfer effects on measures of fluid intelligence in healthy adults; the results of which showed a small training transfer effect. Using several approaches, the current review evaluated and re-analyzed the meta-analytic data for the presence of two different forms of small-study effects: (1) publication bias in the presence of low power and; (2) low power in the absence of publication bias. The results of these approaches showed no evidence of selection bias in the working memory training literature, but did show evidence of small-study effects related to low power in the absence of publication bias. While the effect size estimate identified by Au et al. (2014) provided the most precise estimate to date, it should be interpreted in the context of a uniformly low-powered base of evidence. The present work concludes with a brief set of considerations for assessing the adequacy of a body of research findings for the application of meta-analytic techniques.