Efficacy of a Positive Psychological Intervention in Patients With Eating Disorders: a Randomized Control Trial
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 54
- 试验地点
- 2
- 主要终点
- Subjective Probability Task (SPT; MacLeod, 1996). Change assessment.
研究概览
简要总结
This study is aimed to test the efficacy of a positive psychological intervention for promoting positive emotions and optimistic thinking in eating disordered patients. Participants are randomly assigned to receive the positive intervention or the control condition, which consists on thinking about daily activities.
详细描述
Eating disorders (ED) are very difficult conditions to treat. Therefore, interventions in this field are shifting their main target towards the disorder's impact in quality of life, rather than ED symptomatology in itself. In this sense, a focus in the promotion of positive emotions and well-being is emerging in order to buffer from the harmful effects caused by ED.
Positive psychological interventions have shown efficacy in the promotion of positive emotions and well-being. In this sense, one of these interventions is called Best Possible Self (BPS), since is aimed to enhance positive emotions and well-being. Specifically, BPS is a positive future thinking technique, which requires people to envision themselves in the future, after everything has gone as good as it possibly could. This exercise has shown efficacy improving optimism, future expectancies and positive affect compared to a control condition, in general population and depressive patients.
Furthermore, the progress of Information and Communication Technologies, has allowed the development of technology applications and devices that could enhance the quality of experience and the well-being levels. This approach is called Positive Technology and it can be used as a complement to positive psychological interventions. Positive Technology can be defined as the scientific and applied approach to improve the quality of our personal experience trying to increase wellness and generate strengths.
Taking into account the prior literature, the aim of the present study is to carry out a randomized controlled study with ED patients in order to explore if BPS is able to produce improvements in different well-being and clinical measures. The exercise will be applied through a Positive Technology system. The design employed in this study is similar to the used in other studies.
Five assessment moments were used: Before the exercise (baseline), after the first session (day 1) and post-training (1 month). Moreover, two follow-ups were included: one month after finishing the training period (1st follow-up) and three months after finishing the training (2nd follow-up)
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Single (Participant)
入排标准
- 年龄范围
- 18 Years 至 65 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Subject has a diagnosis of Eating Disorder by a Clinical Psychologist according to DSM-IV criteria
- •Subject accepts to participate in the study voluntarily
排除标准
- •Subject suffering a severe physical condition
- •Subject suffering from substance or alcohol depedence
结局指标
主要结局
Subjective Probability Task (SPT; MacLeod, 1996). Change assessment.
时间窗: Baseline, day 1, 1 month, 2 months, 4 months
This scale measures positive and negative expectancies about future events. It consists of 20 statements referring to negative expectancies and 10 statements referring to positive expectancies. Participants answer on a 7-point scale (Not at all likely to occur - Extremely likely to occur). Some studies have found an appropriate levels of internal consistency for positive and negative expectancies (α=0.80-0.82 y 0.91, respectively).
Positive and Negative Affect Scale (PANAS, Watson, Clark & Tellegen, 1988; Sandín et al., 1999). Change assessment.
时间窗: Baseline, day 1, 1 month, 2 months, 4 months
To measure affect, the Spanish adaptation of the Positive and Negative Affect Scale was used (PANAS, Sandín et al., 1999; Watson, Clark \& Tellegen, 1988). This instrument is composed of 20 items: 10 items measuring positive affective states and 10 items measuring negative affect states. Participants rate on a five-point scale (from "Not at all" to "Extremely") the degree to which they usually feel a specific affective state. PANAS is one of the most widely-used instruments to measure affect because it shows excellent psychometric properties (Cronbach Alpha's from 0.87-0.91).
次要结局
- Life Orientation Test (Lot-R; Otero, Luengo, Romero Gómez & Castro, 1998; Scheier, Carver & Bridges, 1994). Change assessment.(Baseline, 1 month, 2 months, 4 months)
- General Self Efficacy Scale-12 (GSES-12; Bosscher et al., 1997; Herrero et al., 2014). Change assessment.(Baseline, 1 month, 2 months, 4 months)
- Dispositional Hope Scale (DHS; Snyder et al., 1991). Change assessment.(Baseline, 1 month, 2 months, 4 months)
- Self-Concordant Motivation (SCM; Sheldon & Elliot, 1999)(day 1)
研究者
Angel Enrique Roig
Ph.D Student
Universitat Jaume I