post treatment gains
Therapeutic efficacy—understood across the depth-psychology corpus as the demonstrable capacity of an intervention to produce meaningful, lasting improvement in the patient—occupies a contested methodological and conceptual terrain. Chambless and Hollon establish the gold standard: efficacy requires independent replication through controlled experimentation, and the field distinguishes sharply between efficacy trials (internal validity under controlled conditions) and effectiveness studies (generalizability to clinical populations). This distinction acquires special urgency in Avery's discussion of Therapeutic Community models, where the complexity of intervention resists reduction to randomized-controlled trial designs, and where 'unique mechanisms of therapeutic efficacy' are grounded in community-as-method rather than discrete techniques. Abbass's meta-analytic work on short-term psychodynamic psychotherapy complicates the picture further: effects not only persist but frequently increase at follow-up, challenging assumptions that therapeutic gains erode post-treatment. Miller's work on Motivational Interviewing raises a parallel concern—that clinical flexibility, when constrained by manualization, suppresses rather than expresses efficacy. Bowen's adventure therapy meta-analysis introduces moderator analysis as indispensable: age, program length, and publication era all modulate effect sizes. Kratzer's bouldering psychotherapy RCT locates self-efficacy as a partial mediator of treatment outcome. Taken together, the corpus reveals therapeutic efficacy as irreducibly plural: a function of intervention specificity, population characteristics, methodological design, and the temporal arc of post-treatment gains.
A scheme is proposed for determining when a psychological treatment for a specific problem or disorder may be considered to be established in efficacy or to be possibly efficacious.
Chambless and Hollon establish the foundational empirical framework for classifying treatments by demonstrated efficacy, requiring independent replication and distinguishing efficacy from effectiveness and cost-utility.
, Defining Empirically Supported Therapies, 1998thesis
Unique Mechanisms of Therapeutic Efficacy The active ther... the utility of effectiveness (as opposed to efficacy) studies in treatment-resistant clinical populations and interventions whose complexity rivals that of a university education should not be discounted
Avery argues that for complex, community-based interventions with treatment-resistant populations, effectiveness research must be accorded weight alongside formal efficacy trials, and identifies unique mechanisms of therapeutic efficacy specific to the Therapeutic Community model.
, The Opioid Epidemic and the Therapeutic Community Model: An Essential Guide, 2019thesis
in each of somatic symptoms, depressive symptoms, anxiety, general symptoms, social adjustment and interpersonal problems, the treatment effect sizes were greater in long-term follow-up
Abbass's meta-analysis of STPP demonstrates that therapeutic gains not only endure but increase at follow-up across multiple outcome domains, constituting evidence of durable and expanding post-treatment efficacy.
, Short-term psychodynamic psychotherapies for common mental disorders, 2014thesis
only when a treatment has been found efficacious in at least two studies by independent research teams do we consider its efficacy to have been established and label it an efficacious treatment.
The requirement of independent replication by separate investigatory teams is identified as the cornerstone criterion for establishing therapeutic efficacy, protecting against investigator bias and setting-specific artifacts.
, Defining Empirically Supported Therapies, 1998thesis
This restriction of clinical flexibility may account for why the use of a therapist manual was associated with significantly lower effect sizes for MI (Hettema et al., 2005).
Miller demonstrates that over-manualization suppresses MI's therapeutic efficacy by constraining therapist responsiveness, implicating procedural flexibility as a moderating variable in treatment outcomes.
, Motivational Interviewing: Helping People Change, Third Edition, 2013thesis
Psychological treatments have long been presumed to have more stable effects than pharmacotherapy, either because they redress underlying propensities that contribute to risk or because patients acquire stable skills that enable them to cope better with those underlying vulnerabilities.
Chambless and Hollon argue that the temporal stability of therapeutic gains—and the mechanisms behind that stability—constitutes a central criterion for evaluating and differentiating treatment efficacy.
, Defining Empirically Supported Therapies, 1998thesis
this meta-analytic review of empirical studies of adventure therapy program effectiveness found moderate, positive, significant short-term effects, with maintenance of the short-term gains in the longer-term.
Bowen's meta-analysis establishes adventure therapy as a moderately efficacious treatment modality, with post-treatment gains maintained over follow-up, and identifies age as a moderator of effectiveness.
, A Meta-Analysis of Adventure Therapy Outcomes and Moderators, 2013thesis
moderate to large and sustained or increased gains across diverse clinical populations... the largest published psychodynamic psychotherapy meta-analysis to date likewise found significantly increased gains in follow-up compared with immediately post treatment
Multiple converging meta-analyses confirm that STPP produces moderate to large gains that are sustained or amplified at follow-up, establishing the durability of psychodynamic treatment efficacy across diverse clinical populations.
, Short-term psychodynamic psychotherapies for common mental disorders, 2014supporting
the current work was aimed at investigating the effect of a manualized bouldering psychotherapy (BPT) on perceived self-efficacy in people with depression, compared with a home-based physical exercise program (EP) and state-of-the-art cognitive behavioral group therapy (CBT).
Kratzer introduces a multicenter RCT framework to evaluate the therapeutic efficacy of bouldering psychotherapy on perceived self-efficacy in depression, benchmarking it against established CBT.
, Bouldering psychotherapy is effective in enhancing perceived self-efficacy in people with depression: results from a multicenter randomized controlled trial, 2021supporting
the important point is that meta-analyses do not eliminate the need to make informed judgments about the quality of the studies reviewed
Chambless and Hollon caution that quantitative meta-analytic synthesis cannot substitute for substantive methodological judgment in appraising the quality and generalizability of efficacy evidence.
, Defining Empirically Supported Therapies, 1998supporting
perceived self-efficacy improved significantly, although the observed changes were highest in the BPT group with 3.04 GSE points... followed by 2.44 points in the CBT group
Kratzer's RCT results show that all three interventions improved perceived self-efficacy, with bouldering psychotherapy producing the largest gains, suggesting a somatic-experiential pathway to therapeutic efficacy.
, Bouldering psychotherapy is effective in enhancing perceived self-efficacy in people with depression: results from a multicenter randomized controlled trial, 2021supporting
MI is intended to influence client factors that are associated with positive outcomes such as hope, self-efficacy, and active engagement
Miller frames MI's therapeutic efficacy as operating through client-level mediators—hope, self-efficacy, and engagement—aligning so-called nonspecific common factors with targeted mechanisms of change.
, Motivational Interviewing: Helping People Change, Third Edition, 2013supporting
it is useful to consider the extent to which evidence from efficacy trials is relevant to the kinds of patients actually seen in clinical practice
Chambless and Hollon raise the problem of external validity, arguing that the clinical utility of demonstrated efficacy depends on the degree to which trial populations approximate real-world clinical diversity.
, Defining Empirically Supported Therapies, 1998supporting
youth who participated in OBH had 36 points of change greater than youth... this regression model accounted for 29.4% of the variances in Time 2 Y-OQ 2.01 total scores
DeMille's comparison-group study quantifies differential therapeutic efficacy, showing that OBH participation significantly predicts greater symptom reduction than non-OBH conditions at one-year follow-up.
, The effectiveness of outdoor behavioral healthcare with struggling adolescents: A comparison group study, 2018supporting
the utility of continuing data collection is likely to reach a point of diminishing returns... those disorders that tend to follow a more variable course require longer follow-ups than those that tend to be more stable over time.
Chambless and Hollon address the methodological challenge of determining optimal follow-up duration for capturing therapeutically meaningful post-treatment gains without incurring diminishing empirical returns.
, Defining Empirically Supported Therapies, 1998supporting
no differences were found between BPT and CBT with respect to positive effects on self-efficacy, which suggests that BPT should be used in health care besides state-of-the-art CBT.
The equivalence of BPT and CBT in producing self-efficacy gains supports BPT as a clinically viable treatment with comparable therapeutic efficacy, particularly for populations deterred by the stigma of conventional psychotherapy.
, Bouldering psychotherapy is effective in enhancing perceived self-efficacy in people with depression: results from a multicenter randomized controlled trial, 2021supporting
de Jonghe 2001 specifically compared dropout rates between STPP added to treatment with medications versus medications alone. They found a 10% dropout rate using STPP plus medication versus 40% for medication alone.
Abbass documents that STPP dramatically reduces dropout relative to pharmacotherapy alone, implying that treatment retention is itself a dimension of therapeutic efficacy with direct outcome implications.
, Short-term psychodynamic psychotherapies for common mental disorders, 2014supporting
Post hoc pairwise comparisons showed significant differences between pre- and posttreatment for all three subscales for males and females... All three subscale scores remained in the mild
Russell's longitudinal data on adolescent wilderness therapy demonstrates pre-to-post gains on depression, anxiety, and stress that persist into the follow-up period, supporting the durability of outdoor treatment efficacy.
, Adolescent Substance-use Treatment: Service Delivery, Research on Effectiveness, and Emerging Treatment Alternatives, 2008supporting
indicating retention of short-term gains, and ranging in size from very small negative (Social Development, -.06) to small positive (Physical, .23)
Bowen's meta-analysis reveals that adventure therapy's short-term gains are generally retained at follow-up, with the behavioral outcome category showing the only significant longer-term positive effect.
, A Meta-Analysis of Adventure Therapy Outcomes and Moderators, 2013supporting
For a designation of efficacious and specific, the EST must have been shown to be statistically significantly superior to pill or psychological placebo or to an alternative bona fide treatment in at least two independent research settings.
Chambless and Hollon specify the highest criterion for therapeutic efficacy—superiority to active comparison conditions across independent settings—distinguishing specific efficacy from general improvement effects.
, Defining Empirically Supported Therapies, 1998supporting
Major patient attributes include motivation for change, readiness for treatment, and problem severity at intake—the types of measures believed to be important for deciding treatment program placement
Simpson's conceptual framework situates therapeutic efficacy as contingent on patient intake characteristics—motivation, readiness, and severity—identifying these as necessary moderators in any outcome model.
, A conceptual framework for drug treatment process and outcomes, 2004supporting
Treatment approaches that focus on gradual development of self competence in relation to real-life problems and settings have been shown to have optimal treatment effects.
Russell identifies gradual self-efficacy development through naturalistic task accomplishment as the active therapeutic ingredient in outdoor behavioral healthcare, linking mechanism to efficacy outcome.
, An Assessment of Outcomes in Outdoor Behavioral Healthcare Treatment, 2003supporting
Enhanced perceived self-efficacy is also regarded as an important protective factor that promotes psychological resilience... enhanced perceived self-efficacy is related to lower levels of depression and anxiety.
Kratzer frames self-efficacy enhancement as a transdiagnostic mechanism of therapeutic efficacy, functioning as a protective and resilience-promoting factor across diverse clinical presentations.
, Bouldering psychotherapy is effective in enhancing perceived self-efficacy in people with depression: results from a multicenter randomized controlled trial, 2021supporting
previous meta-analyses considering outdoor therapeutic program outcomes have considered participants in government-funded programs or outdoor adventure programming more broadly... their evaluation of outdoor adventure programming... fails to tell the clinical community about the effectiveness of residential private pay WT programs specifically.
Bettmann identifies a gap in the efficacy literature by noting that prior meta-analyses aggregate across heterogeneous program types, obscuring the specific efficacy profile of residential private-pay wilderness therapy.
, A Meta-analysis of Wilderness Therapy Outcomes for Private Pay Clients, 2016aside
marital and family problems, accompanied with successful problem resolution, have also been reported to increase the alcoholic family member's chances of resuming abstinence following relapse
Benda implicates relational and systemic variables—marital functioning and family problem resolution—as post-treatment moderators of efficacy, highlighting the social ecology of sustained therapeutic gains.
, Spirituality and Religiousness and Alcohol/Other Drug Problems: Treatment and Recovery Perspectives, 2006aside
23 subjects derived from Bridging the Gaps Treatment Center who were given oral and IV therapy were followed-up at six months, one year, and two years post-IV treatment in terms of being sober and not having any relapse during the targeted time frame.
Blum's pilot study tracks sobriety and relapse rates at multi-year post-treatment intervals, contributing naturalistic follow-up data on the durability of neuroadaptagen amino-acid therapy's therapeutic gains.
, Early Intervention of Intravenous KB220IV Neuroadaptagen Amino-Acid Therapy (NAAT)™ Improves Behavioral Outcomes in a Residential Addiction Treatment Program: A Pilot Study, 2012aside