Do rules of friendship tell us what kinds of traits we value in friends?

Friendships are valuable social relationships that provide many psychological and health benefits. However, friendships can also be costly and exploitative. How do we ensure maximum benefits while reducing potential costs from friendships? One way is to have “rules” (heuristics for assessing value -- if a rule is broken, then the friendship provides less value) that allow one to keep track of the benefits in friendship and provide information about friends’ desirable traits. Across 3 studies (total N = 1,206), participants reported preferences for personality traits and rules in their friendships. Results suggest that there are 1) strong hierarchical preferences for maintenance rules in friendships that 2) predict participant preferences for traits in their friends. Future research should investigate how these factors influence maintenance and dissolution of friendships.

P056 Using Polysomnography in Young People with Borderline Personality Disorder: A Pilot and Feasibility Study

Introduction Few studies have assessed sleep in young people (aged 15–25 years) with BPD using polysomnography. The feasibility of using polysomnography in this population might be questioned due to polysomnography’s invasiveness, anxiety and sensory sensitivities in BPD, and misconceptions that individuals with BPD are uncooperative and non-compliant. This study aimed to provide pilot sleep quality and architecture data and assess polysomnography feasibility. Method Participants were 13 females aged 15–25, 7 (Mage = 19.97, SD = 3.15) with BPD and 6 age-matched healthy controls (Mage = 20.13, SD = 3.31). Participants completed two non-consecutive nights of polysomnography monitoring (second night’s data were used in analyses). Participants were given the option of completing polysomnography monitoring at home or in a sleep laboratory. Results Young people with BPD displayed less arousals across the night and specifically during NREM sleep compared with healthy young people. All other sleep parameters were comparable across groups. There was considerable heterogeneity among participant preferences for in-home vs. sleep laboratory-based monitoring, due to comfort, safety, convenience, interest in seeing a sleep laboratory, or their living situation (eg. presence of bed partner at home). Anxiety was identified as a potential barrier to polysomnography research in this population. Discussion There were some indications of more consolidated sleep in BPD, which might reflect a greater sleep need in this population. The feasibility and tolerability of in-home and sleep laboratory-based polysomnography were demonstrated. Future protocols should incorporate ways to minimise anxiety, for example through providing a choice of monitoring location.

Modeling individual variation in visual search with reinforcement learning

Experiments on the efficiency of human search sometimes reveal large differences between individual participants. We argue that reward-driven task-specific learning may account for some of this variation. In a computational reinforcement learning model of this process, a wide variety of strategies emerge, despite all simulated participants having the same visual acuity. We conduct a visual search experiment, and replicate previous findings that participant preferences about where to search are highly varied, with a distribution comparable to the simulated results. Thus, task-specific learning is an under-explored mechanism by which large inter-participant differences can arise.

Patient and befriender experiences of participating in a befriending programme for adults with psychosis: A qualitative study.

Background Befriending is a popular form of volunteering in healthcare, and research suggests that it can be beneficial for people with mental illness. This study aimed to explore the experiences of a large sample of volunteer befrienders and patients who participated in the VOLUME trial, testing the efficacy of a structured befriending programme for individuals with psychosis. This is the first study to explore the specific challenges and benefits of befriending in both volunteers and patients in this population within the same programme. Methods A series of in-depth semi-structured interviews were conducted with 34 volunteer befrienders and 28 participating patients. All participants who had taken part in at least one befriending session were invited to be interviewed about their experiences with the aim of including a wide range of views, including those who were more or less engaged with the befriending programme. The data were analysed using Thematic Analysis. Results Four broad themes were developed from the analysis of the befriender and patient interviews which, although were largely discrete, captured the overall experiences of participating in the befriending programme: 1) Bridging the gap, 2) A genuine relationship that developed over time, 3) A big commitment, and 4) A flexible approach. Conclusions These results further support that, befriending programmes for individuals with psychosis can be a worthwhile experience for both befrienders and patients. However, participation also requires perseverance and flexibility from both sides. Different factors, such as incorporating participant preferences for frequency of meetings, have to be considered in the development and management of a befriending programme in order to provide effective support to both befrienders and patients. Declaration of conflicting interests None

Octogenarian preferences and expectations for acute coronary syndrome treatment

Background: The number of elderly persons with cardiovascular disease is increasing. In Sweden, the incidence of acute myocardial infarction is the highest among individuals aged 85 years and over. However, there is still little evidence about whether this population benefits from established treatments. Furthermore, the values and preferences of octogenarians (age ⩾80 years), as well as how they could be involved in treatment decisions, have been largely overlooked in research. Overall, increased knowledge about the preferences and expectations of octogenarians is needed to incorporate their treatment expectations into the decision-making process. Aims: This study aimed to describe the treatment choice preferences and post-treatment life expectations of octogenarians with acute coronary syndrome. Methods: A total of 19 patients (eight women, 11 men) aged 80 years and older and diagnosed with non-ST-elevation myocardial infarction or unstable angina were enrolled in this qualitative study. Data were collected between May 2011 and June 2013 through semistructured interviews. The data were analysed using qualitative content analysis. Results: We identified two main categories: Wanting the best and Hope for increased wellbeing. Participant preferences were influenced by their own and others’ previous experiences and their confidence in healthcare professionals. With respect to treatment outcomes, the participants hoped to get well, stay active, experience fewer symptoms and regain vitality. Conclusion: The studied octogenarians desired the best treatment option and trusted that their healthcare providers will make appropriate recommendations. These patients expected their treatment to result in increased wellbeing and fewer symptoms.

Development of “My Retainers” mobile application: Triangulation of two qualitative methods (Preprint)

BACKGROUND Diligent wear of removable orthodontic retainers requires prolonged compliance and is invariably necessary to preserve optimal results. Patient-informed behaviour-change interventions represent a promising and novel means of enhancing compliance with retainer wear. OBJECTIVE To describe the development of a patient-informed mobile application aimed to enhance retainer wear. METHODS Four aspects were considered during mobile application development: participant preferences; analysis of publicly-available retainer-related posts on Twitter; available interventions; and behaviour-change theories. Audio-recorded one-to-one interviews were conducted with a subset of participants to account for patient preferences in terms of features, design and content. A criterion-based purposive sample of participants wearing vacuum-formed retainers for at least 4 years was used. Thematic analysis of transcribed data was undertaken. RESULTS The need to facilitate communication with the treating clinician, responsive reminder and tracking systems, and access to useful and engaging written and visual information, in addition to other personalised and interactive features were considered important. Concerns related to retainer wear shared on Twitter informed an exhaustive list of frequently-asked questions. Application features were mapped to relevant theoretical constructs. Determinants of existing behavioural change theories were used to link application features to expected outcomes. CONCLUSIONS A holistic process involving both patient and professional input can be useful in informing the development of mobile applications. The orthodontic application (“My Retainers”) will undergo further scrutiny in relation to its effectiveness in inducing behavioural change and concerning patient experiences prior to finalisation.