Investigating the Neural Systems That Support the Beneficial Effects of Positive Emotion on Stress Regulation
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 99
- 试验地点
- 2
- 主要终点
- Mood Ratings (Pos)
研究概览
简要总结
For this study, community participants visited the PI's psychophysiology lab for a single experimental session. In this study, participants completed a brief mood measure, followed by a task training in which a research assistant described and gave examples of cognitive reappraisal in response to negative images. Participants were then randomly assigned to positive or neutral emotion induction conditions, delivered by virtual reality. Then, participants completed an event-related, picture-based cognitive reappraisal task for 23 minutes. Following the task, participants once again responded to a mood measure, completed post-task questionnaires (individual difference measures) and answered a series of questions regarding the task they completed, including difficulty of regulation, or any images that were personally relevant.
The investigators predicted that the positive emotion induction would result in powerful effects on self-reported emotion, which may or may not interact with the cognitive reappraisal condition.
详细描述
For the studies, participants were recruited via paper and electronic flyers on campus and in the surrounding communities. Interested participants were screened via phone, email and/or web form to assess eligibility according to criteria listed elsewhere. If participants qualified, they were be invited to complete a single laboratory session in the PI's lab.
Once arriving at the laboratory, participants completed the consent process, in which a research assistant trained in ethical principles regarding human subjects research answered any questions about the consent form and verbally reinforced the key rights of the participants outlined there. Once both parties were satisfied, the consent form was signed.
Participants sat with a trained research assistant/experimenter who gave an overview of the entire session, and then began training for the cognitive reappraisal task. The training took 10-15 minutes. During the training, the experimenter offered several possible reappraisals of negative images and allowed the participants to offer their own as well, providing encouragement and feedback. During this training, the experimenter also went over the method of responding (using the VR equipment). Participants were reminded during training that they may stop the experiment at any point if the pictures are too upsetting.
Immediately following task training, participants will made a general mood rating using the mDES. Then, they were randomly assigned to a positive or neutral mood induction, to be delivered via the VR headset for three minutes. Participants were encouraged to explore the VR environment, which was either a positive (beach scene) or neutral (office scene). The VR environment was implemented using a headset with integrated audio. After the VR exploration, participants made a rating of their current positive and negative affect in the VR environment. Then, participants completed the reappraisal task in the VR environment. The task took approximately 23 minutes.
Finally, participants completed post-task individual difference measures.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Basic Science
- 盲法
- Single (Participant)
入排标准
- 年龄范围
- 18 Years 至 55 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Community members ages 18-55
- •Fluent in English
- •Without present psychotic symptoms
排除标准
- 未提供
结局指标
主要结局
Mood Ratings (Pos)
时间窗: Baseline, and post-reappraisal task
Before putting on the VR headset and at the end of the experiment, participants used the modified Differential Emotions Scale (mDES; Fredrickson, 2013; Izard, 1977) to rate their current mood. We defined the mDES as a mood measure because it was intended to measure participants' current mood absent of a stimulus intended to evoke an emotional response (Rosenberg,1998). The mDES consists of 20 questions and is comprised of two sub-scales for positive and negative emotions with 10 questions for each subscale respectively. Scales are comprised of averaging all positive scores together and all negative scores together. In our study, participants were asked to rate their current experience of all 20 emotions on a five-point Likert Scale (1 - not at all to 5 - Extremely). Minimum socre = 1, maximum score = 5. Higher scores indicate higher levels of positive/negative mood.
Mood Induction Ratings
时间窗: Pre-reappraisalTask
After the VR induced mood induction, and prior to starting the reappraisal task participants rated their positive and negative emotions on a 1-9 scale, where 1 is not at all and 9 is extremely.
Means of Self-reported Emotion Ratings
时间窗: During the reappraisal task, individual ratings for each picture were taken immediately after viewing the image. The mean rating across all images was computed after the experiment was complete.
The mean of each negative and positive emotion score were calculated post-reappraisal task. Higher scores indicate higher positive and negative emotions. The scale for both positive and negative was 1 - 9 where 1 was not positive at all/not negative at all and 9 was very positive/very negative. The minimum score was 1 and the maximum score was 9.
次要结局
- Debriefing of Instructions(Post-reappraisal task)
- Task Difficulty(Post-reappraisal task)
- Number of Participants Reviewed for Possible Prior Experience With the Reappraisal Task and/or Task Images(Post-reappraisal task)
- Satisfaction With Life Scale(Post-reappraisal task)
- Number of Participants With Full Task Compliance(Immediately after the reappraisal task)
- DWECK-E (Theries of Emotion Scale)(Post-reappraisal task)
- The Big Five Inventory-10 (BFI-1)(Post-reappraisal task)
- Brief Resilience Scale(Post-reappraisal task)
- The Igroup Presence Questionnaire (IPQ)(Post-reappraisal task)
- Brief Cope(Post-reappraisal task)
研究者
Kateri McRae
Associate Professor
University of Denver