Neural moderators of social influence susceptibility on drinking

Objectives: Conversations shape health behaviors. However, individuals vary in susceptibility to conversational influence and in their neural responses that track such influences. We examined whether activity in brain regions associated with social rewards and making sense of others’ minds was related to drinking following conversations about alcohol. We studied ten social groups of college students (total N = 104 students; 4760 total observations) across two University campuses. Methods: We collected whole-brain fMRI data while participants viewed photographs of the faces of peers with whom they tended to drink at varying frequencies (i.e., drinking vs. non-drinking peers). Next, using mobile diaries, we tracked alcohol-related conversations and alcohol use twice daily for 28 days. Results: On average, talking about alcohol was associated with a higher probability of drinking the following day. Controlling for baseline drinking, participants who responded more strongly to drinking peers—with whom they drank more frequently— in brain regions associated with social rewards and mentalizing showed higher susceptibility to conversational influence on drinking. Conversely, stronger neural responses to non-drinking peers—with whom they drank less frequently—decoupled the link between alcohol conversations and next-day drinking. Conclusions: These findings conceptually replicate prior findings linking peer conversations and drinking behavior in a longitudinal, ecologically valid setting, and provide new evidence that brain sensitivity to peers may exacerbate or buffer conversational susceptibility to drink

Mindful attention to alcohol can reduce cravings in the moment and consumption in daily life

It is critical to support healthy development of alcohol-related habits, particularly in contexts with heightened risk such as college campuses. Mindfulness-based strategies are frequently used in interventions to reduce substance use in clinical populations, but their utility as a preventative strategy among emerging adults is less clear. Combining multivariate neuroimaging, intervention, and experience sampling methodologies, we tested the degree to which mindful attention reduces alcohol cravings in the laboratory and consumption in daily life in a sample of college students. Students completed a mindful attention task towards alcohol in an fMRI scanner followed by a 28-day, smartphone-based, experience sampling intervention. We leveraged functional neuroimaging and machine learning to develop a neural measure (signature) of mindful attention that enabled us to examine moment-to-moment fluctuations and individual differences in effective implementation of mindful attention. In the laboratory, mindfully attending to alcohol decreased craving, particularly among people who more strongly expressed the mindful attention signature. In daily life, the mindful attention intervention increased mindful responses to alcohol and decreased lagged alcohol consumption through two distinct pathways: mindful responses directly influenced alcohol consumption and indirectly influenced it by reducing cravings for alcohol. Moreover, individuals who more strongly expressed the mindful attention signature benefitted the most from the intervention. Broadly, our study highlights how mindful attention can reduce alcohol consumption among emerging adults in college via a scalable smartphone-based intervention

Psychological distance intervention reminders reduce alcohol consumption frequency in daily life

Abstract Modifying behaviors, such as alcohol consumption, is difficult. Creating psychological distance between unhealthy triggers and one’s present experience can encourage change. Using two multisite, randomized experiments, we examine whether theory-driven strategies to create psychological distance—mindfulness and perspective-taking—can change drinking behaviors among young adults without alcohol dependence via a 28-day smartphone intervention (Study 1, N = 108 participants, 5492 observations; Study 2, N = 218 participants, 9994 observations). Study 2 presents a close replication with a fully remote delivery during the COVID-19 pandemic. During weeks when they received twice-a-day intervention reminders, individuals in the distancing interventions reported drinking less frequently than on control weeks—directionally in Study 1, and significantly in Study 2. Intervention reminders reduced drinking frequency but did not impact amount. We find that smartphone-based mindfulness and perspective-taking interventions, aimed to create psychological distance, can change behavior. This approach requires repeated reminders, which can be delivered via smartphones

Psychological distance intervention reminders reduce alcohol consumption frequency in daily life

Modifying behaviors, such as alcohol consumption, is difficult. Creating psychological distance between unhealthy triggers and one’s present experience can encourage change. Using two multisite, randomized experiments, we examine whether theory-driven strategies to create psychological distance—mindfulness and perspective taking—can change drinking behaviors among two samples of young adults without alcohol dependence via a 28-day smartphone intervention (Study 1, N = 108 participants, 5492 observations; Study 2, N=218 participants, 9994 observations). Study 2 presents a close replication with a fully remote delivery during the onset of the COVID-19 pandemic. During weeks when they received daily smartphone reminders, individuals in the psychological distance interventions drank less frequently than control weeks, and less than control participants. Intervention reminders reduced drinking frequency but did not impact amount. We find that smartphone-based mindfulness and perspective-taking interventions, aimed to create psychological distance, can change behavior. This approach requires frequent reminders, which can be delivered via smartphones

Frontoparietal functional connectivity moderates the link between time spent on social media and subsequent negative affect in daily life

Abstract Evidence on the harms and benefits of social media use is mixed, in part because the effects of social media on well-being depend on a variety of individual difference moderators. Here, we explored potential neural moderators of the link between time spent on social media and subsequent negative affect. We specifically focused on the strength of correlation among brain regions within the frontoparietal system, previously associated with the top-down cognitive control of attention and emotion. Participants (N = 54) underwent a resting state functional magnetic resonance imaging scan. Participants then completed 28 days of ecological momentary assessment and answered questions about social media use and negative affect, twice a day. Participants who spent more than their typical amount of time on social media since the previous time point reported feeling more negative at the present moment. This within-person temporal association between social media use and negative affect was mainly driven by individuals with lower resting state functional connectivity within the frontoparietal system. By contrast, time spent on social media did not predict subsequent affect for individuals with higher frontoparietal functional connectivity. Our results highlight the moderating role of individual functional neural connectivity in the relationship between social media and affect

Study protocol: Social Health Impact of Network Effects (SHINE) Study

Humans are a fundamentally social species whose well-being depends on how we connect with and relate to one another. As such, scientific understanding of factors that promote health and well-being requires insight into causal factors present at multiple levels of analysis, ranging from brain networks that dynamically reconfigure across situations to social networks that allow behaviors to spread from person to person. The Social Health Impacts of Network Effects (SHINE) study takes a multilevel approach to investigate how interactions between the mind, brain, and community give rise to well-being. The SHINE protocol assesses multiple health and psychological variables, with particular emphasis on alcohol use, how alcohol-related behavior can be modified via self-regulation, and how thoughts, feelings, and behaviors unfold in the context of social networks. An overarching aim is to derive generalizable principles about relationships that promote well-being by applying multilayer mathematical models and explanatory approaches such as network control theory. The SHINE study includes data from 711 college students recruited from social groups at two universities in the northeastern United States of America, prior to and during the COVID-19 pandemic. Participants completed at least one of the following study components: baseline self-reported questionnaires and social network characterization, self-regulation intervention assignment (mindful attention or perspective taking), functional and structural neuroimaging, ecological momentary assessment, and longitudinal follow-ups including questionnaires and social network characterization. The SHINE dataset enables integration across modalities, levels of analysis, and timescales to understand young adults’ well-being and health-related decision making. Our goal is to further our understanding of how individuals can change their thoughts, feelings, and behaviors, and of how these changes unfold in the context of social networks