Alcohol consumption occurring in a social or solitary setting often yields different behavioural responses in human subjects. For example, social drinking is associated with positive effects while solitary drinking is linked to negative effects. However, the neurobiological mechanism by which the social environment during alcohol intake impacts on behavioural responses remains poorly understood. We investigated whether distinct social environments affect behavioural responses to ethanol and the role of the dopamine system in this phenomenon in the fruit fly Drosophila melanogaster. The wild-type Canton-S (CS) flies showed higher locomotor response when exposed to ethanol in a group setting than a solitary setting, and there was no difference in females and males. Dopamine signalling is crucial for the locomotor stimulating effect of ethanol. When subjected to ethanol exposure alone, the dopamine transport mutant flies fumin (fmn) with hyper dopamine displayed the locomotor response similar to CS. When subjected to ethanol in a group setting, however, the fmn\'s response to the locomotor stimulating effect was substantially augmented compared with CS, indicating synergistic interaction of dopamine signalling and social setting. To identify the dopamine signalling pathway important for the social effect, we examined the flies defective in individual dopamine receptors and found that the D1 receptor dDA1/Dop1R1 is the major receptor mediating the social effect. Taken together, this study underscores the influence of social context on the neural and behavioural responses to ethanol.

Collaboration with African religious congregations can promote psychosocial well-being with greater accessibility. Effective collaboration requires studying congregations as unique intervention contexts. This study explored how an intervention in western Kenya fit within and altered congregational discussion patterns. We conducted a cluster-randomized trial of a church-based intervention to improve family relationships, mental health and sexual health. For each intervention topic covered, we describe baseline and post-intervention changes in church leaders\' beliefs and communication as well as discussion frequency between leaders and members and among members. Mixed-effects logistic regression assessed pre-post change in member-reported discussion frequency. At baseline, members and leaders reported already discussing family, parenting, and emotions frequently and sexuality and finances less frequently. Leaders generally felt they should discuss all topics but were less comfortable and knowledgeable about sexuality and finances than other topics. After the intervention, leader comfort and knowledge increased and discussion frequency increased for nearly all topics, especially those discussed less initially. Good fit between the desires and activities of church members and leaders suggests the potential for further collaboration, especially on mental health and family well-being. Increased discussion of sensitive topics underscores the potential of community-level interventions to affect social norms.

Eye gaze is an important social cue in human communication that serves as a predictor of changes in attention, indicates social interest, and even affects the evaluation of objects that have been looked at. However, it needs to be shown how this strong nonverbal signal affects social and aesthetic evaluations in social settings. In this study, we presented natural scenes with two faces in three gaze conditions showing different directions of gaze. Participants evaluated faces that were looked at or not, that showed direct or averted gaze, for attractiveness (aesthetic) as well as trustworthiness (social). In Experiment 1, faces looking directly at the perceiver were rated as more attractive and as more trustworthy. In Experiment 2, when the direct gaze condition was omitted, faces that were looked at by another face were judged as more trustworthy. In Experiment 3a, participants did not remember the directions of gaze of two faces, demonstrating the dependence of the judgement on the actual situation and excluding a memory explanation. In Experiment 3b, we confirmed that these gaze effects depend on the direction of gaze and not the mere presence of another person. Our findings show how gazing in real world settings affects social and aesthetic evaluations.

When questions relating to how a touch DNA sample from a specific individual got to where it was sampled from, one has limited data available to provide an assessment on the likelihood of specific transfer events within a proposed scenario. This data is mainly related to the impact of some key variables affecting transfer that are derived from structured experiments. Here we consider the effects of unstructured social interactions on the transfer of touch DNA. Unscripted social exchanges of three individuals having a drink together while sitting at a table were video recorded and DNA samples were collected and profiled from all relevant items touched during each sitting. Attempts were made to analyze when and how DNA was transferred from one object to another. The analyses demonstrate that simple minor everyday interactions involving only a few items in some instances lead to detectable DNA being transferred among individuals and objects without them having contacted each other through secondary and further transfer. Transfer was also observed to be bi-directional. Furthermore, DNA of unknown source on hands or objects can be transferred and interfere with the interpretation of profiles generated from targeted touched surfaces. This study provides further insight into the transfer of DNA that may be useful when considering the likelihood of alternate scenarios of how a DNA sample got to where it was found.

This article takes mental health and prisons as its two foci. It explores the links between social and structural aspects of the penal setting, the provision of mental healthcare in prisons, and mental health work in this environment. This analysis utilises qualitative interview data from prison-based fieldwork undertaken in Her Majesty׳s Prison Service, England. Two themes are discussed: (1) the desire and practicalities of doing mental health work and (2) prison staff as mental health work allies. Concepts covered include equivalence, training, ownership, informal communication, mental health knowledge, service gatekeepers, case identification, and unmet need. Implications for practice are (1) the mental health knowledge and understanding of prison wing staff could be appraised and developed to improve mental healthcare and address unmet need. Their role as observers and gatekeepers could be considered. (2) The realities of frontline mental health work for clinicians in the penal environment should be embraced and used to produce and implement improved policy and practice guidance, which is in better accord with the actuality of the context - both socially and structurally.