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CompletedNCT00831727Updated May 12, 2016

The Role of Affect Regulation and Self-presentation in the Expressive Writing Intervention

An interventional study of Expressive Writing and Control in Posttraumatic Stress Disorders, sponsored by University of Toronto. Completed at 1 site in Canada. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2016-05-12.

Sponsored by University of Toronto · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
75
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

The purpose of the present study is twofold. First, we will attempt to examine the role that emotion regulation and self-presentation play as potential moderators in the expressive writing paradigm. We hypothesize that expressive writing participants who demonstrate greater abilities to regulate their emotions at baseline will improve more on our outcome measures. We also hypothesize that those expressive writing participants who demonstrate higher levels of self-presentation at baseline will improve less on our outcome measures.

The second aim of the study has two related objectives. First, we will attempt to investigate whether the expressive writing intervention can increase and enhance an individual's emotion regulation abilities. Related to this, we will then go on to examine whether emotion regulation can be looked at as a potential mechanism of action in the expressive writing procedure. Related to these two objectives, we hypothesize that in comparison to the control group, participants in the expressive writing condition will show increases in their ability to regulate their emotions from baseline to four week follow up. Moreover, we predict that greater gains in emotion regulation abilities for the expressive writing participants will be significantly related to greater gains in outcome measures.

02

Conditions studied

  • Posttraumatic Stress Disorders

Keywords

  • expressive writing
  • trauma
  • intervention
  • posttraumatic stress
03

In context

Stress Disorders, Post-Traumatic

2,237 studies on the registry are indexed under Stress Disorders, Post-Traumatic; 553 are open to participants now.

This study's enrollment of 75 is close to the median of 70 across 1,856 interventional studies indexed under Stress Disorders, Post-Traumatic.

Browse Stress Disorders, Post-Traumatic studies →

Lead sponsor

University of Toronto is the lead sponsor of 397 studies on the registry; 59 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Fluent in English
  • Previously experienced trauma (not current or ongoing; excluding bereavement)
  • Currently experiencing trauma-related distress

Exclusion criteria

Exclusion Criteria:

  • Currently involved in psychotherapy
  • Currently taking psychotropic medications
  • Imminent threat to self or others
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
75 participants (actual)

Study arms

  • Experimental
    Expressive Writing

    Behavioral: Expressive Writing

  • Placebo comparator
    Control

    Behavioral: Control

Interventions

  • BehavioralExpressive Writing

    Participants will write about their experienced trauma for 20 minutes on each of three consecutive days using techniques associated with expressive writing

    Also known as: Emotional writing

  • BehavioralControl

    Participants will write as factually as possible about an assigned trivial topic for 20 minutes on each of three consecutive days

06

What researchers measure

Primary outcomes

  1. Posttraumatic Stress Diagnostic Scale

    Time frame: Initial session; One month follow-up

Secondary outcomes

  1. Difficulties in Emotion Regulation Scale

    Time frame: Initial session; One month follow-up

  2. Pennebaker Inventory of Limbic Languidness

    Time frame: Initial session; One month follow-up

  3. Beck Depression Inventory, Second Edition

    Time frame: Initial session; One month follow-up

07

Study locations

1 site
  • Ontario Institute for Studies in Education of the University of Toronto
    Toronto, Ontario M5S 1V6, Canada
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 12, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00831727
Lead sponsor
University of Toronto
Responsible party
Justin Mattina (Principal Investigator, University of Toronto) — Principal investigator
First posted
Jan 29, 2009
Start date
Feb 2009
Primary completion
Nov 2010
Completion
Nov 2010
Last update
May 12, 2016

Study contacts

Jeanne C Watson, Ph.D.
study director · University of Toronto
Justin M Mattina, M.A.
principal investigator · University of Toronto
Jonathan J Danson, B.A.
principal investigator · University of Toronto

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in May 2016. You cannot join it, but the record below documents what was studied.

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