Resurrection of 2'-5'-oligoadenylate synthetase 1 (OAS1) from the ancestor of modern horseshoe bats blocks SARS-CoV-2 replication.

The prenylated form of the human 2'-5'-oligoadenylate synthetase 1 (OAS1) protein has been shown to potently inhibit the replication of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), the virus responsible for the Coronavirus Disease 2019 (COVID-19) pandemic. However, the OAS1 orthologue in the horseshoe bats (superfamily Rhinolophoidea), the reservoir host of SARS-related coronaviruses (SARSr-CoVs), has lost the prenylation signal required for this antiviral activity. Herein, we used an ancestral state reconstruction approach to predict and reconstitute in vitro, the most likely OAS1 protein sequence expressed by the Rhinolophoidea common ancestor prior to its prenylation loss (RhinoCA OAS1). We exogenously expressed the ancient bat protein in vitro to show that, unlike its non-prenylated horseshoe bat descendants, RhinoCA OAS1 successfully blocks SARS-CoV-2 replication. Using protein structure predictions in combination with evolutionary hypothesis testing methods, we highlight sites under unique diversifying selection specific to OAS1's evolution in the Rhinolophoidea. These sites are located near the RNA-binding region and the C-terminal end of the protein where the prenylation signal would have been. Our results confirm that OAS1 prenylation loss at the base of the Rhinolophoidea clade ablated the ability of OAS1 to restrict SARSr-CoV replication and that subsequent evolution of the gene in these bats likely favoured an alternative function. These findings can advance our understanding of the tightly linked association between SARSr-CoVs and horseshoe bats.

If They'd Said You Should Only Drink Five Units I'd Have Listened: A Mixed Methods Study of Alcohol Consumption Following a Diagnosis of Breast Cancer.

OBJECTIVES: As part of a wider study describing the impact of a breast cancer diagnosis on lifestyle behaviours, this paper describes the impact of a breast cancer diagnosis on alcohol consumption and factors influencing consumption. METHODS: Cross-sectional online survey of 140 people (138 women) and interviews with 21 women diagnosed with breast cancer in the last 10 years. RESULTS: Of the 100 survey participants who drank alcohol 25% were drinking at increasing or higher risk levels and 17% strongly wanted to change their drinking behaviour. The habitual aspects of alcohol consumption were the strongest predictor of current alcohol consumption behaviours. Social norms and perceptions about conflicting information were substantial barriers to change. CONCLUSIONS: Breast cancer survivors need accurate information about the risks of alcohol consumption and guidelines in order to make informed decisions about making changes to their behaviour. Interventions to support breast cancer survivors to reduce alcohol consumption need to focus on the development of healthy habits and may benefit from a focus which includes partners and friends.

Discrimination, gender dysphoria, drinking to cope, and alcohol harms in the UK trans and non-binary community.

Transgender (trans) and non-binary people may be at increased risk of alcohol harms, but little is known about motives for drinking in this community. This study explored the relationship between risk of alcohol dependence, experience of alcohol harms, drinking motives, dysphoria, and discrimination within a United Kingdom sample of trans and non-binary people with a lifetime history of alcohol use. A cross-sectional survey was co-produced with community stakeholders and administered to a purposive sample of trans and non-binary people from 1 February until 31 March 2022. A total of 462 respondents were included-159 identified as non-binary and/or genderqueer (identities outside the man/woman binary), 135 solely as women, 63 solely as men, 15 as another gender identity, 90 selected multiple identities. Higher levels of reported discrimination were associated with higher risk of dependence and more reported harms from drinking. Coping motives, enhancement motives, and drinking to manage dysphoria were associated with higher Alcohol Use Disorders Identification Test scores. Social, coping, and enhancement motives alongside discrimination and drinking to have sex were associated with harms. The relationship between discrimination and risk of dependence was mediated by coping motives and drinking to manage dysphoria. Further to these associations, we suggest that reducing discrimination against trans and non-binary communities might reduce alcohol harms in this population. Interventions should target enhancement motives, coping motives and gender dysphoria. Social and enhancement functions of alcohol could be replaced by alcohol free supportive social spaces.

Drinking and mental health in middle adulthood: exploring the impact of wellbeing, mental health literacy, and drinking motives on risk of alcohol dependence.

OBJECTIVES: Risky drinking is a concern among UK-based middle-aged adults. We aimed to explore the relationship between risky drinking, drinking motives, wellbeing, and mental health literacy (MHL). METHOD: Cross-sectional analysis of online survey data completed by 193 UK-based adults aged 40-65 who drank alcohol, incorporating the Alcohol Use Disorders Identification Test (AUDIT); Drinking Motives Questionnaire-Revised (DMQ-R); Warwick-Edinburgh Mental Wellbeing Scale (WEMWBS); Mental Health Literacy Scale (MHLS) and demographic questions. RESULTS: Coping, enhancement and conformity motives and gender significantly predicted higher AUDIT scores (measuring risky drinking). Enhancement motives were found to mediate the relationship between the self-help component of MHL and AUDIT scores, while coping motives mediated the association between wellbeing and AUDIT scores. CONCLUSION: Findings support research emphasising the influence of drinking motives on risky drinking and highlights how low wellbeing may interact with coping motives to explain risky drinking among middle-aged adults, particularly men. Interventions supporting individuals to understand the relationship between drinking motives and risky drinking, develop adaptive coping strategies, and address the causes of low wellbeing, may be beneficial. However, as the sample was 84% ethnically White, 64% women, 85% educated to at least undergraduate level, and reported a relatively high mean socioeconomic status (6.98 out of 10), the results may not generalise beyond these groups. Future research should use stratified sampling to increase generalisability, as well as exploring whether alcohol-specific, component-specific, or disorder-specific MHL is associated with risky drinking and wellbeing.

Regrets, I've Had a Few: Exploring Factors Associated with Getting Drunk and Regret in an International Study of People Who Drink Alcohol.

BACKGROUND: Excessive alcohol consumption is often followed by feelings of regret. This study aimed to explore country differences in experiences of drunkenness and regrets and predictors of experiencing a greater number of regrettable drinking occasions. METHODS: This study draws on a sample of 82,821 respondents from 31 countries who completed the 2020 Global Drug Survey. Respondents were asked to report how many times in the last year they had been drunk, how many of those times they felt regret afterwards and to complete a range of sociodemographic measures. RESULTS: In the last 12 months, the median times drunk was 6 and the median number of regretted occasions was 2. There was an inverse relationship between times drunk and regret. Respondents who got drunk more often regretted it a smaller percentage of the time than those who got drunk less often. Respondents from Argentina and Colombia regretted being drunk the most and Denmark the least. Being younger, in higher AUDIT categories were associated with more times drunk. Being a woman, having mental health conditions were associated with more regretted occasions.Discussion and conclusions: Country variations may reflect relative acceptability of being drunk. Those who drink more, per occasion, may become accustomed to the consequences and feel fewer regrets. Interventions promoting reduced alcohol consumption may benefit from encouraging people to consider their future regret following a drinking occasion but should account for lower levels of regret in those who get drunk more often.

Shouldn't We Know This Already? UK Women's Views About Communicating the Link Between Alcohol Consumption and Risk of Breast Cancer.

Alcohol is a causal factor in about 10% of breast cancer (BCa) cases, but awareness of this link is low. This study explored how to raise awareness and inform the development of an intervention using the COM-B model (capability, opportunity, motivation, behavior) framework. Eight online focus groups were conducted with 36 participants (6 expert stakeholders,and 30 women aged 40-65). Participants reflected on a package of information about alcohol and BCa and discussed how to impart this information and encourage women to reduce drinking. Thematic analysis of focus group transcripts was undertaken. Three themes were identified: understanding ineffective messaging; transitions and challenges; and message acceptability. Current health information about alcohol was perceived as judgmental and BCa was put down to chance. Mid-life consisted of many challenges that could lead to increased consumption, but menopause transition may be a key moment for alcohol reduction. Barriers and enablers to communicating risk information and encouraging alcohol reduction were mapped onto the COM-B model. Psychological capability (relating to knowledge), social opportunity (in the form of social pressure) and automatic motivation (relating to drinking to cope) were barriers to behavior change.  These will be targeted in an alcohol reduction intervention. It is important to tailor information to women's experiences, taking into account the social benefits of drinking, and encourage the development of healthy coping strategies. Acceptable intervention messages may include personal stories, clear statistics, and suggest healthy alternatives to drinking. It is vital that messaging does not appear judgmental or patronizing.

Testing socioeconomic status and family socialization hypotheses of alcohol use in young people: A causal mediation analysis.

INTRODUCTION: The effect of socioeconomic status on adolescent substance abuse may be mediated by family socialization practices. However, traditional mediation analysis using a product or difference method is susceptible to bias when assumptions are not addressed. We aimed to use a potential outcomes framework to assess assumptions of exposure-mediator interaction and of no confounding of the results. METHOD: We revisited a traditional mediation analysis with a multiple mediator causal mediation approach using data from 17,761 Norwegian young people (13-18 years), 51% female. Data were collected through a print questionnaire. Socioeconomic status was operationalized as parental education and employment status (employed or receiving welfare); drinking behavior as the frequency of alcohol consumption and frequency of intoxication in the past year; and socialization practices as general parenting measures, alcohol-related parental permissiveness, and parent drinking behavior. RESULTS: There was no consistent evidence of exposure-mediator interaction. Formal sensitivity analysis of mediator-outcome confounding was not possible in the multiple mediator model, and this analysis supported the hypothesis that socioeconomic status effects on adolescent substance abuse are fully mediated by family socialization practices, with apparently stronger effects in younger age groups observed in plots. CONCLUSION: We found that the effect of socioeconomic status on adolescent substance abuse was fully mediated by family socialization practices. While our analysis provides more rigorous support for causal inferences than past work, we could not completely rule out the possibility of unmeasured confounding.

Connecting Through Dance: Understanding Conscious Clubbing Event Experiences.

Individuals abstaining from alcohol consumption frequently find themselves in contexts encouraging consumption, with limited alternative social interaction opportunities. Conscious clubbing events exclude alcohol and drugs, possibly providing valuable social connections, but little is known about event benefits. Twelve conscious clubbing event attendees and facilitators aged 25-55 from across Europe participated in semi-structured photo-elicitation interviews, which were analysed using thematic analysis. Findings suggested that conscious clubbing appears to enhance health, healing and growth, aiding recovery from substance dependency and trauma. Positioned as a modern ritual, symbolic and ritualistic preparations and experiences promoted storytelling and self-discovery. Connecting through synchronised but unchoreographed movement, participants engaged in powerful journeys and transformative experiences detached from life constraints. Inclusive digital and face-to-face conscious clubbing communities provided a sense of meaning and belonging away from substance use pressures and harms, particularly for those marginalised within society. Findings provide important and in-depth insights, including novel harm prevention implications. Future work should consider participatory barriers, event sustainability and misconceptions to increase event availability and participation.

Taking Action in Student Harassment Situations: Application of the Behaviour Change Wheel to Bystander Intervention.

This study applied the Behaviour Change Wheel (BCW) to understand barriers and facilitators to bystander behaviors in UK students. The BCW includes detailed examination of the capabilities, opportunities, and motivations involved in behaviors. Two surveys (n = 515; n = 201) and a focus group study (n = 12) were undertaken. Capability to intervene may be influenced by confidence and beliefs about physical ability and safety. Students appeared to have the physical opportunity to intervene, but social opportunity might be influenced by cultural norms. Motivations might be influenced by beliefs as well as inherent stereotypes about perpetrators and victims. Behavior change techniques (BCTs) such as instruction on how to perform the behavior, reattribution and creating a valued self-identity should be applied to overcome these barriers. A logic model to theorize the change processes underlying bystander behaviors in this population offers a new perspective on what needs to be addressed in interventions.

Where and What You Drink Is Linked to How Much You Drink: An Exploratory Survey of Alcohol Use in 17 Countries.

BACKGROUND: This paper aimed to explore the differences in subjective experiences of intoxication depending on drinking location and drink type. Methods: Data came from 32,194 respondents to The Global Drug Survey (GDS) 2015, an annual, cross-sectional, online survey. Respondents selected their usual drinking location (home alone: home with partner/family: house parties: pubs/bars or clubs) and usual drink (wine; beer/cider/lager; spirits or alcopops/coolers). They indicated how many drinks they required to reach three stages of intoxication (feeling the effects; an ideal stage of intoxication; and the tipping point) and how frequently they reached each stage. Results: Drink type affected grams of alcohol reported to reach the tipping point: 109 gm wine, 127 gm alcopops, 133 gm of beer, and 134 gm of spirts. Respondents who drank at home alone, or in clubs reached their tipping point more frequently compared to other locations. Conclusions: Where people drink, and the type of alcohol they drink, affected the amount of alcohol reported to reach different stages of intoxication. Understanding why different drinking locations, and drink types lead to a need for greater consumption to reach an ideal state of drunkenness, such as social cues from other people who drink, may enable people to reduce their drinking.

Perceptions of Alcohol Health Warning Labels in a Large International Cross-Sectional Survey of People Who Drink Alcohol.

AIMS: This paper aimed to explore perceptions of alcohol health warning labels amongst a large international sample of people who drink alcohol. METHODS: The Global Drug Survey (GDS) is the world's largest annual cross sectional survey of drug use. Seven health warning labels were presented (relating to heart disease, liver, cancer, calories, violence, taking two days off and the myth of benefits to moderate drinking). People were asked if they were aware of the information, believed it, if it was personally relevant, and if it would change their drinking. This paper included data from 75,969 respondents from 29 countries/regions who reported the use of alcohol in the last 12 months, collected during November-December 2017 (GDS2018). RESULTS: The fact that drinking less can reduce the risk of seven types of cancer was the least well known, and yet was demonstrated to encourage almost 40% of drinkers to consider drinking less. Women and high risk drinkers were more likely to indicate they would reduce their drinking in response to all labels. Personal relevance was identified as a key predictor of individual responses. CONCLUSION: Findings highlight the potential of a range of health messages displayed on alcoholic beverages to raise awareness of alcohol-related harms and potentially support a reduction in drinking. Further research should explore what influences personal relevance of messages as this may be a barrier to effectiveness.

"It's just in that sea of things that I never cared about": perception of hepatitis B amongst university students in Aberdeen, North-East Scotland.

BACKGROUND: A significant proportion of international students at UK universities are from regions with medium to high hepatitis B prevalence rates. Understanding the perception of students regarding hepatitis B infection is crucial for the development of appropriate information and services for this population group. METHODS: Twenty semi-structured interviews were conducted with students from the University of Aberdeen. The following key areas were covered: knowledge, awareness, practices including testing, cultural and social aspects and general attitudes to health information and services. Interviews were transcribed verbatim and coded using a framework analysis approach. RESULTS: The participants acknowledged hepatitis B to be a serious disease yet did not consider themselves to be at risk. They felt able to go to their General Practitioner if concerned about hepatitis B but emphasised that there was no indication that this was required. There was a general lack of knowledge about the disease including confusion over other types of hepatitis. This was linked to the perceived lack of attention given to hepatitis B in, for example, sexual health education and disease awareness raising campaigns. The participants expressed a desire for information on hepatitis B to be relevant to the student population, easy to understand, socially acceptable and easily accessible on student portals and social media platforms. CONCLUSIONS: Our study suggests that students in Aberdeen, North East Scotland lack knowledge and awareness of hepatitis B and do not perceive themselves as being at risk of hepatitis B infection. There is a need for more tailored hepatitis B messages to be incorporated into a range of contexts with clearer risk communication for the student population.

Exploring the application of the Prototype Willingness Model to weight loss dieting behaviour among UK adults.

Frequent weight loss dieting leads to increased BMI and is associated with eating pathologies. Theoretical models can aid the development of interventions to reduce risk behaviours such as frequent dieting if they are able to adequately account for the target behaviour. The Prototype Willingness Model (PWM) may be able to account for weight loss dieting as this behaviour is often associated with social images. This study explored whether the PWM could predict weight loss dieting status over and above the Theory of Planned Behaviour (TPB). One hundred and ninety-two participants (69% female; mode age 35-44) completed PWM and TPB measures and recorded their height and weight. Males were more likely to be non-dieters than females. Frequent dieters had a higher BMI than non-dieters and rated themselves as more similar to the overweight prototype. Prototype perceptions predicted willingness to eat unhealthy foods alone. Similarity to the overweight prototype predicted weight loss dieting status over and above TPB measures and sex. Further research should explore prototype perceptions in an obese/overweight frequent dieting population as this may be a fruitful direction for developing interventions to reduce weight loss dieting.

"Here's to a Night of Drunken Mistakes": Exploring Experiences, Regrets, and Optimism in Young Adult Drinkers.

BACKGROUND: Studies exploring "anticipated regret" concerning alcohol rarely consider the broader consequences of excessive drinking that might be regretted. Even if specific regrettable experiences are identified, interventions targeting them may not succeed because individuals are often optimistic about their risk susceptibility. OBJECTIVES: This study examined the consequences young adult drinkers reported, and the extent to which these were regretted. It then explored whether consequences and regrets differentiated between high risk, low risk and light drinkers, and whether regret was related to optimism. METHODS: A cross-sectional on-line questionnaire measured drinking behavior, consequences (frequency) and regrets (extent of likely regret) and risk perceptions (in general, and compared to others). RESULTS: 273 participants were recruited (light (30%), low-risk (40%), and high-risk drinkers (30%). PCA detected three types of experience (common-e.g., vomiting; after-effects-e.g., being depressed; and "serious"-e.g., drunk-driving), and three types of regret ("serious"-e.g., being aggressive; "common"-e.g., wasting time; and "risky behavior regrets"-e.g., drugs). Multinomial regression found the high-risk drink group more likely to be male, had more experiences but regretted these experiences less than other groups. Regrets and optimism interacted, so that higher scores on common regrets were associated with greater optimism. The high-risk group was particularly characterized by optimism. CONCLUSIONS: High-risk drinkers may be unresponsive to anticipated regret manipulations as they do not regret post-alcohol "bad" experiences, and some regrets were associated with comparative optimism. Interventions may need to focus less on regret and aim to change risk perceptions.

I Am Quite Mellow But I Wouldn't Say Everyone Else Is": How UK Students Compare Their Drinking Behavior to Their Peers'.

BACKGROUND: Excessive drinking is commonplace at UK Universities. Individuals may misperceive how much they drink compared to others and are less likely to think that they will suffer adverse consequences. Young people often distance themselves and their friends from 'problem drinkers'. OBJECTIVES: The aim of the study was to explore how student drinkers compared their own drinking behaviors to the drinking behaviors of others. METHODS: An online survey was completed by 416 students aged 18-30 (68.5% female). They were asked 'how do you think your drinking compares with other people like you?' and 'how do you think your behavior when you drink compares with other people like you?' Answers were subjected to thematic analysis. RESULTS: The first main theme was about 'identification as a 'good' drinker'. Participants suggested their own behavior when drinking was similar to their sober behavior. Further, they viewed themselves as more able to maintain a balance between staying in control and having fun while drinking. The second main theme was about 'distancing from being a 'bad' drinker. Participants distanced themselves from negative prototypical drinkers, such compulsive or anti-social drinkers. They also attributed their own drinking behaviors to situational factors, but described other people as intentionally violent or aggressive. Conclusions/Importance: These findings may explain the failure of some health messages to change drinking behaviors. If drinkers perceive that their behavior when they drink is better than other people's then they may discount intervention messages. Targeting these biases could be incorporated into future interventions.

Unspoken Playground Rules Discourage Adolescent Physical Activity in School: A Focus Group Study of Constructs in the Prototype Willingness Model.

The health benefits of exercise in school are recognized, yet physical activity continues to decline during early adolescence despite numerous interventions. In this study, we investigated whether the prototype willingness model, an account of adolescent decision making that includes both reasoned behavioral choices and unplanned responses to social environments, might improve understanding of physical activity in school. We conducted focus groups with British pupils aged 12 to 13 years and used deductive thematic analysis to search for themes relating to the model. Participants described reasoned decisions about physical activity outside school and unplanned choices to be inactive during break, in response to social contexts described as more "judgmental" than in primary school. Social contexts appeared characterized by anxiety about competence, negative peer evaluation, and inactive playground norms. The prototype willingness model might more fully explain physical activity in school than reasoned behavioral models alone, indicating potential for interventions targeting anxieties about playground social environments.

Resisting temptation: alcohol specific self-efficacy mediates the impacts of compensatory health beliefs and behaviours on alcohol consumption.

Awareness of health risks linked with excessive alcohol consumption appears to have little influence on how much some people drink. Compensatory health beliefs (CHBs), in which the consequences of unhealthy behaviour are considered to be neutralised by additional healthy behaviours, are one way of justifying poor health choices. Currently, the role of CHBs within the context of drinking behaviour is not well understood. This research examined associations between alcohol specific compensatory health beliefs (ACH-Beliefs) and behaviours (ACH-Behaviours), alcohol consumption and alcohol specific self-efficacy (ASE), via an online survey completed by 249 participants, aged 18 + years (63.1% female; M age = 41.62 years; SD = 14.80). Higher ACH-Beliefs were associated with increases in ACH-Behaviours. While both predicted alcohol consumption, a greater proportion of variance was explained by ACH-Behaviours. ASE was a significant mediator of those relationships, suggesting that those with higher ASE may be better equipped to regulate drinking behaviour. Recommendations for future research include measuring both CHBs and behaviours within an experimental design, and further investigation of related cognitions such as compensatory behaviour intentions. Alcohol misuse interventions may wish to consider the potential roles of CHBs and behaviours in facilitating maladaptive coping strategies, and how addressing these may reduce harms.

Personalized Digital Interventions Showed no Impact on Risky Drinking in Young Adults: A Pilot Randomized Controlled Trial.

AIM: To assess the effectiveness of two personalized digital interventions (OneTooMany and Drinks Meter) compared to controls. METHOD: Randomized controlled trial (AEARCTR-0,001,082). Volunteers for the study, aged 18-30, were randomly allocated to one of two interventions or one of two control groups and were followed up 4 weeks later. Primary outcomes were AUDIT-C, drinking harms and pre-loading. Drinks Meter provided participants with brief screening and advice for alcohol in addition to normative feedback, information on calories consumed and money spent. OneTooMany presented a series of socially embarrassing scenarios that may occur when drinking, and participants were scored according to if/how recently they had been experienced. RESULTS: The study failed to recruit and obtain sufficient follow-up data to reach a prior estimated power for detecting a difference between groups and there was no indication in the analysable sample of 402 subjects of a difference on the primary outcome measures (Drinks Meter; AUDIT-C IRR = 0.98 (0.89-1.09); Pre-loading IRR = 1.01 (0.95-1.07); Harms IRR = 0.97 (0.79-1.20); OneTooMany; AUDIT-C IRR = 0.96 (0.86-1.07); Pre-loading IRR = 0.99 (0.93-1.06); Harms IRR = 1.16 (0.94-1.43). CONCLUSION: Further research is needed on the efficacy of such instruments and their ingredients. However, recruitment and follow-up are a challenge.

Effectiveness of the strengthening families programme 10-14 in Poland: cluster randomized controlled trial.

Background: : The Strengthening Families Programme for youth aged 10-14 and parents/carers (SFP10-14) is a family-based prevention intervention with positive results in trials in the United States. We assessed the effectiveness of SFP10-14 for preventing substance misuse in Poland. : Cluster randomized controlled trial with 20 communities (511 families; 614 young people) were allocated to SFP10-14 or a control arms. Primary outcomes were alcohol, smoking and other drug use. Secondary outcomes included parenting practices, parent-child relations, and child problem behaviour. Interview-based questionnaires were administered at baseline and at 12- and 24-months post-baseline, with respective 70.4 and 54.4%, follow-up rates. : In Bayesian regression models with complete case data we found no effects of SFP10-14 for any of the primary or secondary outcomes at either follow-up. For example at 24-months, posterior odds ratios and 95% credible intervals for past year alcohol use, past month binge drinking, past year smoking, and past year other drug use, were 0.83 (0.44-1.56), 0.83 (0.27-2.65), 1.94 (0.76-5.38) and 0.74 (0.15-3.58), respectively. Although moderate to high attrition rates, together with some evidence of systematic attrition bias according to parent education and family disposable income, could have biased the results, the results were supported in further analyses with propensity score matched data and 40 multiple imputed datasets. : We found no evidence for the effectiveness of SFP10-14 on the prevention of alcohol or tobacco use, parenting behaviour, parent-child relations or child problem behaviour at 12- or 24-month follow-up in a large cluster randomized controlled trial in Poland.

Age differences in alcohol prototype perceptions and willingness to drink in U.K. adolescents.

Using the prototype willingness model (PWM) as a framework, this study sought to explore the relationship between prototype perceptions, willingness and alcohol consumption in a sample of adolescents in the United Kingdom (UK). Adolescents aged 11-17 were asked about their alcohol prototype perceptions, willingness to drink, intentions, alcohol consumption, drunkenness and harms using a cross-sectional online survey. Participants were recruited through opportunity sampling via schools and parents. The survey was completed by 178 respondents (51% female; 91 aged 11-15, 87 aged 16-17). Multivariate analysis revealed significant differences between participants aged 11-15 and 16-17 on PWM measures, even when experience with drinking was accounted for (p < .001). There were significant interactions (p < .001) between age and prototype perceptions; younger participants rated non-drinker prototypes as more favourable and more similar to the self than 16- and 17-year-old participants. Willingness and intentions interacted with age; both measures were similar in 16- and 17-year-olds, whereas younger participants scored significantly higher on willingness than intentions (p < .001). Three distinct scales of prototype descriptions were identified in principal components analysis. Characteristics related to sociability significantly predicted willingness to drink alcohol in the sample (p < .001). This study extends previous research by demonstrating that the PWM can provide a theoretical explanation of adolescent drinking in the UK. The results suggest that 11- to 15-year-olds may be the most suitable age for an intervention that targets alcohol prototypes, with a focus on sociability characteristics.