This cross-sectional study examined the joint effects of self-efficacy and illness representations on dietary self-care and diabetes distress in adolescents with type 1 diabetes by comparing two theoretical models: the Self-regulation Model (Leventhal, H., Meyer, D., & Nerenz, D. (1980). The common-sense representations of illness danger. In S. Rachman (Ed.), Medical Psychology (Vol. 2, pp. 7-30). New York: Pergamon.) and Social Cognitive Theory (Bandura, A. (1997). Self efficacy: The exercise of control. New York: W.H. Freeman.). One hundred and fifty-one adolescents with type 1 diabetes completed self-report measures of dietary self-efficacy, illness representations, dietary self-care and diabetes distress. Data were analysed using structural equation modelling. The model best supported by the data (Leventhal's Self-regulation Model) showed that dietary self-efficacy, perceived consequences and treatment effectiveness had direct and independent effects on both dietary self-care and diabetes distress. Together with dietary self-efficacy, perceived short-term treatment effectiveness was a significant predictor of dietary self-care. Age was found to be a negative predictor of short-term treatment effectiveness beliefs. Diabetes distress was best predicted by self-efficacy and perceived consequences. It can be concluded that to target effectively dietary self-care and distress, clinicians should focus on key illness representation variables (perceived short-term treatment effectiveness and perceived consequences) in conjunction with self-efficacy.

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This article explores the impact of diagnostic/psychiatric labelling on the attitudes and behavioural intentions of school-aged children towards a hypothetical peer presented with symptoms of attention deficit hyperactivity disorder (ADHD). A sample of 120 children aged 11-12 years read one of three vignettes describing the behaviour of a gender-neutral, same-age peer presenting with symptoms of ADHD. The participants completed self-report measures of attitudes and behavioural intentions after reading the respective vignettes. The majority of participants perceived the vignette character as being male and the attitude held towards him was predominately negative. Significant positive relationships were found between attitudes and children's willingness to engage in social, academic and physical activities. Diagnostic/psychiatric labelling had no additional influence upon attitudes or behavioural intentions. Children's negative attitude towards peers with symptoms of ADHD, given its association with friendship choice, is an important target for change in reducing stigma.

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