Andrew Jones

University of Liverpool | UoL · Institute of Psychology, Health and Society

Background High salt intake is a significant cause of diet-related disease. The salt content of much of the food provided in the out-of-home food sector (OOHFS; e.g., restaurants) can be excessive, but policy options to address this are lacking. An emerging policy approach with limited evidence from randomised controlled trials (RCTs) is the use of...

Food response inhibition training (food-RIT) is found to aid weight loss and reduce snacking of foods high in sugar, salt and fat. However, these interventions suffer from a lack of adherence, with gamification proposed as a solution to increase engagement. The effect of gamification is unclear, however, with a lack of research investigating the ef...

In April 2022, mandatory kilocalorie (kcal) labelling in the out-of-home food sector was introduced as a policy to reduce obesity in England. Here we examined whether the implementation of this policy was associated with a consumer behaviour change. Large out-of-home food sector outlets subject to kcal labelling legislation were visited pre- and po...

Background: Frequent out-of-home food sector (OOHFS) use is associated with poor dietary intake and obesity. There are limited real-world studies on pricing interventions to encourage healthy eating in the OOHFS. We performed a pilot study to collect preliminary trial data on the potential impact of a price reduction intervention on healthier menu...

Background Frequent out-of-home food sector (OOHFS) use is associated with poor dietary intake and obesity. There are limited real-world studies on pricing interventions to encourage healthy eating in the OOHFS. We performed a pilot study to collect preliminary trial data on the potential impact of a price reduction intervention on healthier menu i...

Mandatory calorie labelling was introduced in out-of-home (OOH) food sector outlets during 2022 in England. Previous research in North America has found labelled energy content can be underestimated for packaged and quick-serve foods, but no study has evaluated the accuracy of out-of-home food sector menu calorie labelling in response to the mandat...

Greater consumption of food prepared outside of the home (OOH) is associated with higher energy intake. Strategies are needed to make eating OOH food less harmful to health. Identifying menu characteristics that contribute to higher energy consumption OOH could aid characterisation of OOH outlets by their relative healthiness and inform future poli...

Background: Large reductions to meal portion size result in reduced daily energy intake due to reductions not being fully compensated for through later energy intake. However, to date no studies have investigated how more realistic portion size reductions affect energy intake. The present study investigated whether reducing the portion size of a me...

Objective To assess associations between self-reported advertising exposure to foods high in fats, salt and sugar and household purchases of energy, nutrients and specific product categories. Design A cross-sectional design was used. Advertising exposure data were gathered using a questionnaire administered to the main shopper of each household, a...

Importance: Eating from out-of-home food outlets (OHFO) is common and linked to poor dietary quality, weight gain, and obesity. In response, England implemented mandatory calorie labelling regulations in April 2022 to encourage reformulation and reduce calorie consumption. Few studies have examined the impact of a national calorie labelling policy...

Background: Ultra-processed food (UPF) is currently not included in most countries’ dietary guidance. However, there may be growing public interest and consumer avoidance of UPF due to media reporting of studies on the negative health outcomes associated with UPFs. Methods: We surveyed 2386 UK adults (M age = 45 years, 50% female) during February–A...

Background: Alcohol use is a gendered behavior and motherhood is a life stage which may influence drinking motives. However, there are no drinking motive scales uniquely tailored to maternal populations. This work developed a new maternal drinking motives scale (M-DMS) and determined associations between the M-DMS and alcohol-related behavior. Me...

Introduction: Poor diet, and the consumption of foods high in fat, sugar and salt are common causes of numerous health conditions and premature mortality. Computerised food response inhibition training (food-RIT) is a type of intervention found to aid weight loss and reduce snacking of these foods with the inhibition of motor responses proposed to...

Background: Out-of-home (OOH) food tends to be energy-dense and nutrient-poor. In response, England implemented a mandatory calorie labelling policy in the OOH sector. We evaluated changes in consumer behaviours after the policy was implemented in April 2022. Methods: We employed a natural experimental design to assess pre-post changes in noticing...

Background: Ultra-processed food (UPF) is currently not included in most countries’ dietary guidance. However, there may be growing public interest and consumer avoidance of UPF due to media reporting of studies on the negative health outcomes associated with UPFs. Methods: We surveyed 2,386 UK adults (M age = 45 years, 50% female) during March-Apr...

Background Experience of trauma is a risk factor for increased alcohol use. Childbirth can be psychologically traumatic but there is minimal research investigating whether psychological birth trauma (PBT) is a risk factor for increased maternal drinking or what factors are associated with alcohol use in mothers who have and who have not experienced...

Purpose Indicators of socioeconomic status (SES), such as education and occupational grade, are known to be associated with alcohol use but this has not been examined among individuals with a mental health problem. This study developed latent classes of SES, their associations with alcohol use, and examined the indirect effect via social support an...

Background: The stigma and discrimination experienced by individuals with an alcohol/substance use disorder often extends to the family members and friends who provide care, which is known as courtesy stigma. This courtesy stigma can lead to isolation, poor mental health and might impact the quality-of-care these individuals provide. The aim of thi...

Background and objectives On 6 April 2022, the UK government implemented mandatory kilocalorie (kcal) labelling regulations for food and drink products sold in the out-of-home food sector (OHFS) in England. Previous assessments of kcal labelling practices in the UK OHFS found a low prevalence of voluntary implementation and poor compliance with lab...

Background Mandatory calorie labelling on menus of large out-of-home food outlets was implemented in England on 6 April 2022. Barriers and facilitators that were unforeseen before implementation may modify policy impacts. As part of a process evaluation of the policy, we studied the implementation process, examining business experiences and enforce...

Research shows that questionable research practices (QRPs) are present in undergraduate final-year dissertation projects. One entry-level Open Science practice proposed to mitigate QRPs is “study preregistration,” through which researchers outline their research questions, design, method, and analysis plans before data collection and/or analysis. I...

Introduction Individuals with a severe mental illness (SMI) are more likely to drink at harmful levels or abstain. While it is known that drinking patterns change over time, the reasons for this among those with a SMI are unclear. This study aimed to (i) explore the experiences with alcohol, particularly in relation to mental health symptoms, and (...

Background Healthcare professionals work in high-pressured and demanding environments, which has been linked to the use of alcohol as a coping strategy. This international review aimed (i) to determine the pooled prevalence of hazardous, harmful, dependent, and frequent binge drinking in healthcare professionals, and (ii) to explore factors associa...

Purpose This study tested whether stressful life events and stressful combat experiences are associated with post-traumatic stress symptomology (PTS-S), via facets of mindfulness, in UK military personnel. Methods A sample of 435 UK veterans were recruited to a cross-sectional, online study. Participants completed self-report measures of stressful...

Background and Objectives: On 6th April 2022 the UK government implemented mandatory kilocalorie (kcal) labelling regulations for food and drink products sold in the out-of-home food sector (OHFS) in England. Previous assessments of kcal labelling practices in the UK OHFS found a low prevalence of voluntary implementation and poor compliance with l...

Objective: To examine differences in noticing and use of nutrition information comparing jurisdictions with and without mandatory menu labelling policies and examine differences among sociodemographic groups. Design: Cross-sectional data from the International Food Policy Study (IFPS) online survey. Setting: IFPS participants from Australia, C...

Background In April 2022, mandatory calorie labelling in the out-of-home food sector (OHFS) was introduced as a policy to reduce obesity in England. The policy requires food outlets belonging to large (>250 employees) businesses in England selling food for immediate consumption to provide caloriel labelling on all unpackaged food and non-alcoholic...

Background England implemented a mandatory menu calorie labelling policy in large out-of-home food businesses in April 2022, requiring large businesses to provide calorie information on individual menu items. We aimed to estimate policy impact on population-level obesity and cardiovascular disease (CVD) mortality, as well as socio-economic equity o...

Background Mandatory calorie labelling on menus of large out-of-home food outlets was implemented in England in April 2022. Early quantitative findings indicate implementation was not associated with a change in calories purchased or consumed. We conducted post-implementation interviews to understand the experience and process of implementation and...

Background Statistics anxiety is common among social science students. Despite much evidence examining statistics anxiety and test performance, little research has explored the role of student self-prediction on test performance in a higher education setting. Objective The purpose of this study was to investigate the relationship between statistic...

Videogame livestreaming platforms are an emerging form of digital media, popular with young people, where users watch gaming influencers play videogames. Food and non-alcoholic beverage (hereafter: food) brands have a substantial presence on these platforms, yet no studies have examined the impact of this food marketing on young people. This system...

Background: Previous research has shown that People Who Inject Drugs (PWID) are subject to public stigma, which affects access to, and provision and quality of, treatment and support services. Less is known about the socio-cognitive processes that support the development and maintenance of public stigma toward PWID. The present study investigated t...

Background Regulations mandating kilocalorie (kcal) labelling for large businesses in the out-of-home food sector (OHFS) came into force on 6th April 2022 as a policy to reduce obesity in England. To provide indicators of potential reach and impact, kcal labelling practices were studied in the OHFS, and customer purchasing and consumption behaviour...

Objectives: Problematic substance use is one of the most stigmatized health conditions leading research to examine how the labels and models used to describe it influence public stigma. Two recent studies examine whether beliefs in a disease model of addiction influence public stigma but result in equivocal findings—in line with the mixed-blessings...

Background: Recent cognitive neuroscience models of value-based decision-making suggest value-based choices for alcohol are sensitive to various inputs, such as context and social influence. In two online experiments, we tested whether manipulating these inputs influenced proxies for alcohol value. Experiment 1: 157 social drinkers were presented w...

This meta-analysis aims to examine the relationship between psychopathic traits and theory of mind (ToM), which is classically and broadly defined as competency in representing and attributing mental states such as emotions, intentions, and beliefs to others. Our search strategy gathered 142 effect sizes, from 42 studies, with a total sample size o...

Background Reducing portion sizes of commercially available foods could be an effective public health strategy to reduce population energy intake, but recent research suggests that the effect portion size has on energy intake may differ based on socioeconomic position (SEP). Objective We tested whether the effect of reducing food portion sizes on...

Objective: The prevalence of research conducted online in the addiction field has increased rapidly over the past decade. However, little focus has been given to careless responding in these online studies, despite the issues it may cause for statistical inference and generalizability. Our aim was to examine whether alcohol use is associated with c...

Cognitive Bias Modification (CBM) is hypothesised to reduce unhealthy food preference and consumption through the completion of computerised cognitive training tasks. While there is evidence to suggest that two popular CBM paradigms (Inhibitory Control Training (ICT) and Evaluative Conditioning (EC)) can have a positive influence on food-related ou...

Menu energy labelling has been implemented as a public health policy to promote healthier dietary choices and reduce obesity. However, it is unclear whether the influence energy labelling has on consumer behaviour differs based on individuals’ demographics or characteristics and may therefore produce inequalities in diet. Data were analysed from 12...

Psychopathy has traditionally been linked with heightened criminality, but the relationship of psychopathy with increased risk for dangerousness is contested. To address this debated issue, we conducted an umbrella review (PROSPERO CRD42020214761) of all available meta-analyses of psychopathy and indices of ‘dangerousness’ (e.g., violent or sexual...

Statistics anxiety is common among social science students, with over 70% experiencing some form of anxiety when undertaking statistics modules at degree level. Statistics anxiety has been assumed to impact negatively on students’ academic performance, however, evidence is equivocal. Despite much evidence examining statistics anxiety and test perfo...

Alcohol is calorie dense, but unlike food products, alcoholic drinks tend to be exempt from nutritional labelling laws that require energy content information to be displayed on packaging or at point of purchase. This review provides a perspective on the likely efficacy of alcoholic drink energy labelling as a public health policy to reduce obesity...

Traditional and more modern conceptualizations of psychopathy cite problem with impulse control. However, the extent to which these problems represent a cardinal feature of the disorder has been debated. In this study, we conducted a preregistered systematic review and meta-analysis, searching Embase, Medline, PsycINFO, and PubMed, for studies from...

Objectives: While the assessment of actual food intake is essential in the evaluation of behaviour change interventions for weight-loss, it may not always be feasible to collect this information within traditional experimental paradigms. For this reason, measures of food preference (such as measures of food value and choice) are often used as more...

Aim In a series of pre-registered online studies, we aimed to elucidate the magnitude of the effect of general sustainability labels on U.K. consumers’ food choices. Methods Four labels were displayed: ‘Sustainably sourced’, ‘Locally sourced’, ‘Environmentally friendly’, and ‘Low greenhouse gas emissions’. To ensure reliable results, contingency v...

Background There is convincing evidence that unhealthy food marketing is extensive on television and in digital media, uses powerful persuasive techniques, and impacts dietary choices and consumption, particularly in children. It is less clear whether this is also the case for outdoor food marketing. This review (i) identifies common criteria used...

Background/Objectives Lower socioeconomic position (SEP) is associated with increased risk of higher BMI and developing obesity. No research to date has directly examined whether SEP differences in health-based food choice motives or executive function explain why lower SEP is associated with higher BMI. Subjects/Methods We analysed observational...

Background/Objectives Cross-sectional research has demonstrated weight-related stigma and discrimination, however experimental research providing causal evidence of financial-based weight discrimination is lacking. The aim of these preregistered experiments was to examine whether a novel paradigm in which participants attributed financial rewards a...

Background Peoples' sexual behaviors have changed during the period of enforced COVID-19 social distancing, in some cases, to cope with negative feelings during lockdown. Research on coping using sex is relatively restricted to samples of men with a history of sexual offending, and it is unknown whether coping using sex is associated with health-re...

Importance: There is widespread interest in the effect of food marketing on children; however, the comprehensive global evidence reviews are now dated. Objective: To quantify the association of food and nonalcoholic beverage marketing with behavioral and health outcomes in children and adolescents to inform updated World Health Organization guid...

Mindfulness is characterized by skills such as heightened awareness and acceptance of internal experiences, which may be helpful for people who have experienced trauma. The consistency and strength of the relationship between trait mindfulness and PTSD symptomology, however, is unknown. Studies were included in this review if they were published in...

Background & aims: An initial dose of alcohol can motivate - or prime - further drinking and may precipitate (re)lapse and bingeing. Lab-based studies have investigated the alcohol priming effect; however, heterogeneity in designs has resulted in some inconsistent findings. The aims of this meta-analysis were to i) determine the pooled effect size...

This systematic review examined the effectiveness of policies restricting the marketing of foods and/or non‐alcoholic beverages to children to inform updated World Health Organization (WHO) guidelines. Databases were searched to March 2020. Inclusion criteria were primary studies of any design assessing implemented policies to restrict food marketi...

Cognitive Bias Modification (CBM) paradigms have previously been applied to target appetite (craving, hunger) and food intake and are hypothesised to reduce unhealthy food consumption. However, inconsistencies in relation to training outcomes raise questions regarding the efficacy of CBM as a standalone intervention. Individual level factors (such...

Background/Objectives: Lower socioeconomic position (SEP) is associated with increased risk of higher BMI and developing obesity. No research to date has examined whether the social patterning of health-based food choice motives or executive function explain why lower SEP is associated with higher BMI. Subjects/Methods: We analysed observational da...

Background There has been media coverage surrounding the dangers of heavy drinking and benefits of moderation, with TV and radio presenter, Adrian Chiles, documenting his experience of moderating alcohol consumption in an online article for the Guardian. By analysing the comments in response to Chiles’ article, this study aimed to explore (i) poste...

Previous research suggests that exposure to nature may reduce delay discounting (the tendency to discount larger future gains in favor of smaller immediate rewards) and thereby facilitate healthier dietary intake. This pre-registered study examined the impact of online exposure to images of natural scenes on delay discounting and food preferences....

Participant crowdsourcing platforms (e.g., MTurk, Prolific) offer numerous advantages to addiction science, permitting access to hard-to-reach populations and enhancing the feasibility of complex experimental, longitudinal and intervention studies. Yet these are met with equal concerns about participant non-naivety, motivation, and careless respond...

Crowdsourcing — the process of using the internet to outsource research participation to ‘workers’ — has considerable benefits, enabling research to be conducted quickly, efficiently, and responsively, diversifying participant recruitment, and allowing access to hard-to-reach samples. One of the biggest threats to this method of online data collect...

Background and aims: Research has shown that alcohol use and common mental disorders (CMDs) co-occur; however, little is known about how the global prevalence of alcohol use compares across different CMDs. We aimed to (i) report global associations of alcohol use (alcohol use disorder (AUD), binge drinking and consumption) comparing those with and...

Background/Objectives: Cross sectional research has demonstrated weight-related stigma and discrimination, however experimental research providing causal evidence of financial based weight discrimination is lacking. The aim of these experiments was to examine whether a novel paradigm in which participants attributed financial rewards and punishment...

Background: There has been media coverage surrounding the dangers of heavy drinking and benefits of moderation, with TV and radio presenter, Adrian Chiles, documenting his experience of moderating alcohol consumption in an online article for the Guardian. By analysing the comments in response to Chiles’ article, this study aimed to explore i) reade...

Previous research suggests that exposure to nature may reduce delay discounting (the tendency to discount larger future gains in favour of smaller immediate rewards) and thereby facilitate healthier dietary choices. This study examined the impact of online exposure to images of natural scenes on delay discounting and food preferences. It was predic...

Background Interoception refers to the processes by which we sense, interpret and integrate signals originating from within the body. Deficits in interoception have been linked to higher BMI and may contribute to weight gain. However, there have been conflicting findings and it is not clear how higher BMI is associated with different facets of inte...

Background Coronavirus (COVID-19) resulted in lockdown measures in the UK, which has impacted alcohol use. Alcohol is often used as a coping mechanism and there are public health concerns regarding excessive consumption due to the pandemic. We aimed to longitudinally assess drinking behaviors, and associated factors, during the first UK government-...

While the assessment of actual food intake is essential in the evaluation of behaviour change interventions for weight-loss, it may not always be feasible to collect this information within traditional experimental paradigms. For this reason, proxy measures of food intake (such as measures of food value and choice) are often used as more accessible...

Limited research has examined the impact of energy labelling on portion size selection. It is also unclear whether physical activity calorie equivalent (PACE) is more effective than standard kilocalorie (kcal) energy labelling in promoting healthier dietary behaviour and whether effectiveness varies based on socioeconomic position (SEP). In