Web-based acceptance and commitment therapy for depressive symptoms with minimal support: a randomized controlled trial.
Seven weeks of online ACT plus brief email support cuts depression for adults and the benefit lasts a year.
01Research in Context
What this study did
Researchers built a 7-week web course that teaches ACT skills. People logged in, read lessons, and did short exercises. A student coach sent brief feedback emails once a week.
Adults with low mood joined the course. Half got the ACT site right away. Half waited seven weeks. Both groups filled out mood surveys before, after, and one year later.
What they found
The ACT group felt much better after seven weeks. Their depression scores dropped sharply and stayed low for a full year. The wait-list group did not change until they later took the same course.
The gains were large and lasted with almost no extra contact. A few emails were enough to keep people engaged.
How this fits with other research
Rojahn et al. (1994) first showed ACT could help depression in a single case. Lappalainen et al. (2015) now proves it works for many people in a true experiment.
Fahmie et al. (2013) blended ACT with behavioral activation for adults who also had psychosis. Their open trial saw big drops too, but it had no control group and used face-to-face sessions. The new web course gives the same benefit without psychosis and without leaving home.
Ellingsen et al. (2014) gave ten weeks of ACT to teens with PTSD and saw strong results. The adult depression course is shorter and fully online, showing ACT travels well across age, setting, and diagnosis.
Why it matters
You can now offer ACT without scheduling dozens of clinic visits. Send clients a link, check in by email, and still see big mood gains. This frees your calendar for cases that need in-person work and gives rural clients real help. Try adding a low-contact web ACT module to your service menu next quarter.
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02At a glance
03Original abstract
Low-intensity interventions for people suffering from depressive symptoms are highly desirable. The aim of the present study was to investigate the outcomes of a web-based acceptance and commitment therapy (ACT)-based intervention without face-to-face contact for people suffering from depressive symptoms. Participants (N = 39) with depressive symptoms were randomly assigned to an Internet-delivered acceptance and commitment therapy (iACT) intervention or a waiting list control condition (WLC). Participants were evaluated with standardized self-reporting measures (Beck Depression Inventory [BDI-II], Symptom Checklist-90 [SCL-90], Acceptance and Action Questionnaire [AAQ-2], Five Facet Mindfulness Questionnaire [FFMQ], Automatic Thoughts Questionnaire [ATQ], and White Bear Suppression Inventory [WBSI]) at pre- and post-measurement. Long-term effects in the iACT group were examined using a 12-month follow-up. The iACT program comprised home assignments, online feedback given by master's-level students of psychology over a 7-week intervention period, and automated email-based reminders. Significant effects were observed in favor of the iACT group on depression symptomatology (between effect sizes [ESs] at post-treatment, iACT/WLC, g = .83), psychological and physiological symptoms (g = .60), psychological flexibility (g = .67), mindfulness skills (g = .53), and frequency of automatic thoughts (g = .57) as well as thought suppression (g = .53). The treatment effects in the iACT group were maintained over the 12-month follow-up period (within-iACT ES: BDI-II, g = 1.33; SCL-90, g = 1.04; ATQF/B [Frequency/Believability], FFMQ, WBSI, AAQ-II, g = .74-1.08). The iACT participants stated that they would be happy to recommend the same intervention to others with depressive symptoms. We conclude that an ACT-based guided Internet-delivered treatment with minimal contact can be effective for people with depressive symptoms.
Behavior modification, 2015 · doi:10.1177/0145445515598142