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Related Concept Videos

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Ideally, the people who observe and record the children’s behavior are unaware of who was assigned to the experimental or control group, in order to control for experimenter bias. Experimenter bias refers to the possibility that a researcher’s expectations might skew the results of the study. Remember, conducting an experiment requires a lot of planning, and the people involved in the research project have a vested interest in supporting their hypotheses. If the observers knew which child was...
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Related Experiment Video

Updated: Jul 20, 2026

Meta-Analysis of the Effectiveness and Safety of Shugan Jieyu Capsules for the Treatment of Insomnia
04:34

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Published on: February 17, 2023

Self-help treatment for insomnia: a randomized controlled trial.

Charles M Morin1, Simon Beaulieu-Bonneau, Mélanie LeBlanc

  • 1Ecole de psychologie, Université Laval, Québec, Canada. cmorin@psy.ulaval.ca

Sleep
|November 22, 2005
PubMed
Summary

A self-help behavioral intervention effectively improved sleep for adults with insomnia, increasing sleep time and quality. This accessible approach shows promise for wider availability of effective insomnia treatment.

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Area of Science:

  • Behavioral sleep medicine
  • Public health interventions
  • Epidemiology of sleep disorders

Background:

  • Insomnia is a common health issue frequently left untreated.
  • Effective insomnia interventions exist but lack widespread accessibility.
  • Community-based samples present unique challenges for intervention delivery.

Purpose of the Study:

  • To evaluate the efficacy of a self-help behavioral intervention for insomnia.
  • To assess the impact of a mailed booklet intervention on sleep parameters.
  • To determine the long-term effectiveness of self-help insomnia treatment.

Main Methods:

  • A 2x3 mixed factorial design comparing self-help treatment to a no-treatment control.
  • 192 adults with insomnia, randomly assigned to self-help (n=96) or control (n=96).
  • Intervention involved weekly mailed booklets on sleep hygiene, scheduling, and cognitive strategies.

Main Results:

  • Treated participants showed significant improvements in subjective sleep, including 21 minutes more nightly sleep and 20 minutes less wakefulness.
  • Sleep efficiency increased by 4%, and insomnia severity and sleep quality measures improved significantly.
  • Improvements in sleep parameters were maintained at the 6-month follow-up assessment.

Conclusions:

  • A self-help behavioral intervention effectively reduced insomnia symptoms in a community sample.
  • This accessible self-help approach demonstrates potential for increasing the availability of effective insomnia treatments.
  • Self-help interventions offer a scalable solution for managing prevalent sleep disorders.