Kekic Maria, McClelland Jessica, Bartholdy Savani, Chamali Rifka, Campbell Iain C, Schmidt Ulrike
Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, United Kingdom.
Front Psychiatry. 2020 Jan 22;10:978. doi: 10.3389/fpsyt.2019.00978. eCollection 2019.
The tendency to act on immediate pleasure-driven desires, due to the devaluation of future rewards [a process known as temporal discounting (TD)], has been associated with substance use disorders (SUD) and with conditions characterised by compulsive overeating. The study involved a large inclusive participant sample (i.e., no diagnostic or exclusion criteria were applied). They were recruited/assessed online and we investigated whether TD was related to compulsive overeating and associated problems. Participants [ = 432, (48 males)] completed an online survey, which included a hypothetical monetary TD task, the Eating Disorder Examination-Questionnaire (EDE-Q), the Yale Food Addiction Scale (YFAS) and the Depression Anxiety and Stress Scales (DASS). TD correlated with frequency of compulsive overeating and compensatory behaviours, with eating disorder psychopathology, with scores on the YFAS, and with body mass index (BMI). As our study shows that elevated rates of TD are associated with a range of behaviours/measures, we propose that it is more likely that elevated TD rates are a predisposing factor rather than a consequence of the behaviour, i.e., elevated rates of TD contribute to pathological eating-related behaviours; however, a bi-directional explanation is also possible. Future research should investigate whether interventions aimed at reducing TD have clinical potential for treating problematic eating behaviours.
由于未来奖励的贬值(一种称为时间折扣(TD)的过程)而基于即时愉悦驱动的欲望采取行动的倾向,已与物质使用障碍(SUD)以及以强迫性暴饮暴食为特征的病症相关联。该研究纳入了一个广泛的参与者样本(即未应用诊断或排除标准)。他们通过在线方式招募/评估,我们调查了TD是否与强迫性暴饮暴食及相关问题有关。参与者[ = 432人,(48名男性)]完成了一项在线调查,其中包括一个假设的货币TD任务、饮食失调检查问卷(EDE-Q)、耶鲁食物成瘾量表(YFAS)以及抑郁焦虑压力量表(DASS)。TD与强迫性暴饮暴食和代偿行为的频率、饮食失调的精神病理学、YFAS得分以及体重指数(BMI)相关。由于我们的研究表明TD率升高与一系列行为/测量指标相关,我们提出TD率升高更有可能是一个易感因素而非行为的结果,即TD率升高促成了与饮食相关的病理行为;然而,双向解释也是可能的。未来的研究应调查旨在降低TD的干预措施是否具有治疗有问题饮食行为的临床潜力。