A randomized controlled trial of a behavioral intervention for decreasing bedtime procrastination using a wait-list
Sonhye Jeoung1, Huisu Jeon1, Hae-Chung Yang2
1Department of Psychology, Sungshin University, Seoul, Republic of Korea.
Insights
A behavioral intervention significantly reduced bedtime procrastination (BP) and improved sleep efficiency in young adults. This study also identified emotional regulation and compensation as key functions of BP.
Area of Science:
- Behavioral psychology
- Sleep science
- Clinical psychology
Background:
- Bedtime procrastination (BP) is intentionally delaying sleep without external reasons.
- Understanding the efficacy of interventions for BP is crucial for public health.
- This study addresses BP in a non-clinical sample of young adults.
Purpose of the Study:
- To establish the efficacy of a behavioral intervention in reducing bedtime procrastination.
- To investigate the functions of bedtime procrastination as a sleep-interfering behavior.
- To assess the intervention's impact on sleep quality and related psychological factors.
Main Methods:
- A randomized controlled trial with a treatment group and a wait-list control group.
- Sixty participants (mean age 21.33 years, 86.7% female) with frequent BP were included.
- Standardized scales (BPS, ESS, ISI, CES-D, MEQ) and sleep diaries were used for data collection.
Main Results:
- The treatment group showed significant reductions in bedtime procrastination (35.56%) and increased sleep efficiency (5.70%).
- Participants in the treatment group experienced decreased sleep onset latency and improved insomnia and sleepiness scores.
- Functional analysis revealed emotional regulation, compensation, and social factors as primary drivers of BP.
Conclusions:
- A behavioral intervention demonstrates promising efficacy in decreasing bedtime procrastination and improving sleep.
- Identifying the functions of BP provides insights for targeted therapeutic strategies.
- Findings support the integration of this intervention in clinical settings for sleep improvement.
Study Objectives:
Bedtime Procrastination (BP) is defined as the behavior of going to bed later than intended, without external reasons. This study is a randomized controlled trial aiming to establish efficacy of a behavioral intervention to decrease BP in a non-clinical sample.
Method:
This was an open-label trial that was conducted in sixty participants (mean age 21.33 ± 2.35 years, 86.7% females) without insomnia or psychopathology who endorsed frequent BP. They were randomized to either the treatment group (n = 32) or wait-list control group (n = 28). Participants completed the Bedtime Procrastination Scale (BPS), the Epworth Sleepiness Scale (ESS), the Insomnia Severity Index (ISI), Center for Epidemiologic Studies Depression Scale (CES-D), Morningness-Eveningness Questionnaire (MEQ), and a weekly sleep diary. Functional analysis was conducted to investigate the function of BP. Linear mixed models were used for analyses.
Result:
The treatment group showed significant improvement on the BPS (35.56% decrease, d = 2.19, bedtime procrastination duration based on the sleep diary (-46.29 min, d = 1.22), and sleep efficiency (5.70% increase, d = 1.25) compared to the wait-list control group following the intervention. There were also significant reductions in time spent from bedtime to lights out, and wake time to time out of bed, in addition to improvements in ISI and ESS scores in the treatment group compared to the control group. Functional analysis results indicated emotional regulation (31.3%), compensation (26.5%), and social interaction and belongingness (18.1%) as the most frequent functions of bedtime procrastination.
Conclusion:
This study shows promising results for a behavioral intervention targeting BP and sleep. In addition, this study demonstrated various functions of BP as a sleep-interfering behavior. We expect that these findings could be used in future studies and clinical settings to decrease BP.
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