Effectiveness of Acceptance and Commitment Therapy (ACT) on Alleviating Depression Symptoms: A Longitudinal-Naturalistic Study
Bernadeth B. Boco
Discipline: social sciences (non-specific)
Abstract:
Acceptance and commitment therapy (ACT) is recognized as a transdiagnostic and one of the
effective therapeutic intervention approaches for depression in young adults and university students with a
proven extended significant benefit. ACT’s core goals are to be psychologically flexible and less prone to
depression. However, although numerous studies demonstrated ACT’s effectiveness, it is necessary to
address the gap in determining whether the efficacy is consistent with previous research that mostly applied
randomized controlled trials (RCTs). This study utilized a rare approach in navigating its efficiency among
an underrepresented sample of Filipino students in a local university. This research applied a longitudinalnaturalistic
single-group design within a two-month interval between baseline and post-intervention data
among 124 participants. Relevant data were gathered using the Quick Inventory for Depressive
Symptomatology – Self-Rated Version (QIDS-SR) in evaluating depressive levels and symptomatology and
the Multidimensional Psychological Flexibility Inventory (MPFI) for identifying psychological flexibility and
inflexibility. The results demonstrated significant changes with a p-value of 0.000 and an effect size d of .85.
More so, it can be surmised that the value of F (2, 121) = 33.80 with a p-value less than 0.05 significantly
impacted depression. Hence, ACT psychoeducation group intervention through a synchronous online
platform alleviated the depression symptoms among students in a local university. Also, data proved that
psychological flexibility and inflexibility have a significant impact on depression. Thus, the potential
utilization and inclusion of psychoeducation based on ACT in the course and counseling program among
college students is highly suggested.
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