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Wampold, B.E. & Imel, Z.E. (2015). The great psychotherapy debate (2^nd ed.). New York: Routledge.

The Great Psychotherapy Debate: Starting in April, 2015 I review parts of The Great Psychotherapy Debate (Wampold & Imel, 2015) in the PPRNet Blog. This is the second edition of a landmark, and sometimes controversial, book that surveys the evidence for what makes psychotherapy work. You can view parts of the book in Google Books

In the concluding chapter of their book, Wampold and Imel discuss the evidence and strategies that therapists can use to improve patient outcomes. As indicated in previous PPRNet Blogs, Wampold and Imel concluded that the differences between specific treatment approaches is small. In other words, Wampold and Imel argue that there is no good evidence that one bona fide psychotherapy is more effective than another for most disorders. By “bona fide” treatments, they mean psychotherapy that: provides the client with a plausible theory/explanation of the disorder, delivers a structured intervention based on the plausible theory, and is offered by an effective therapist. The authors also found that contextual factors (e.g., therapeutic alliance, therapist empathy, client expectations) accounted for a sizeable proportion of patient outcomes. A key element in this understanding of effective therapy is the role of the therapist. The authors reviewed various studies and meta analyses that showed that therapists differ widely in their outcomes and in their ability to establish a therapeutic alliance. Unfortunately, therapists tend to be overly-optimistic about their clients’ outcomes. Therapists often do not have quality data on their clients’ progress, and the complexities of the therapeutic work makes it difficult for therapists to keep in mind all aspects of the therapy that is helpful or not helpful to clients. For example, some therapists may be good at establishing an alliance, but they may not be so good at providing a viable treatment structure. Other therapists may be highly empathic with clients who have moderately severe symptoms, but the same therapists may not respond as empathically with more difficult clients. Outcome or process monitoring (i.e., providing therapists with reliable information about the ongoing status of patient symptoms or about the quality of the therapeutic relationship) provides an evidence-based aid in helping therapists to improve their clients’ outcomes.

Practice Implications

Regardless of the type of psychotherapy they use, therapists are responsible for achieving good outcomes for their clients. This includes continually developing therapeutic skills over time. There is some evidence that a reflective attitude towards one’s psychotherapy practice is helpful. Unfortunately, therapists may not be continually improving or reflecting on their practice. This is indicated by research showing that trainees and interns appear to be as competent as experienced clinicians. Therapists need quality information about their clients in order to improve their own practice and clients’ outcomes. But psychotherapy practice is complex, the therapeutic relationship is multifaceted, and clients are variable in their presenting issues and life experiences. All of these make it difficult for any therapist to make accurate decisions in therapy. Progress or process monitoring (i.e., continually measuring outcomes and relationship processes with a psychometrically valid instrument), may be one way for therapists to receive high quality feedback about patient progress in order to improve their psychotherapy practice.

The Great Psychotherapy Debate: Starting in April, 2015 I review parts of The Great Psychotherapy Debate (Wampold & Imel, 2015) in the PPRNet Blog. This is the second edition of a landmark, and sometimes controversial, book that surveys the evidence for what makes psychotherapy work. You can view parts of the book in Google Books.

Change in dysfunctional attitudes or cognitions is one of the specific mechanisms by which cognitive therapy (CT) is thought to be effective in the treatment of depression. In this part of their book, Wampold and Imel discuss the evidence that addresses the specific change mechanisms for CT. The reason they focus on CT is that CT is by far the most researched psychotherapy approach, and there is a substantial number of CT studies that have addressed this issue of change mechanisms. In an early meta analysis, Oei and Free (1995) found a significant relationship between change in cognitions and CT. However, in the same meta analysis, the authors found that CT and non-cognitive therapies did not differ in terms of their effects on cognitions. That is, most treatments, whether CT or not, appeared to change cognitions. In another study, three different interventions (behavioral activation, CT, and CT plus behavioral activation) all resulted in change in cognitions and improved depression. In other words, cognitive interventions do not seem to be needed to alter cognitions and reduce depression. Wampold and Imel argue that nonspecific processes in CT (and other psychotherapies for that matter) are largely responsible for the effectiveness of psychotherapy. For example, there is evidence to suggest that a number of patients show substantial symptom improvement early in treatment before specific cognitive techniques are introduced. Some have argued that this early favourable response is largely due to the effects of client expectations, reassurance, and remoralization rather than the specific procedures of the therapy. Moreover, patients who experience this remoralization early-on may be better at successfully applying techniques taught in CT. A large review of this literature concluded that there was insufficient evidence to support the notion that challenging thoughts was responsible for the positive effects of CT.

Practice Implications

This line of research appears to indicate that the specific practice of challenging thoughts or dysfunctional attitudes is not primarily responsible for patient change in CT. It may be that for any psychological treatment that has a cogent rationale for the disorder and is administered by an acknowledged expert, client progress may be determined largely by contextual factors. These factors may include a therapeutic alliance, client expectations of benefit, and client remoralization, which may in turn allow clients to benefit from the specific interventions of psychological treatments.

The Great Psychotherapy Debate: Since in April, 2015 I review parts of The Great Psychotherapy Debate (Wampold & Imel, 2015) in the PPRNet Blog. This is the second edition of a landmark, and sometimes controversial, book that surveys the evidence for what makes psychotherapy work. You can view parts of the book in Google Books.

The conduct of psychotherapy trials almost always requires that therapists be adherent and competent in delivering a manualized therapy intervention. Treatment adherence usually refers to the extent to which a therapist used the intervention prescribed by a treatment manual. Therapist competence refers specifically to a therapist’s skill in delivering the therapy. So “competence” in the context of psychotherapy research typically refers only to performing a certain type of treatment. Wampold and Imel argue that these definitions are consistent with a Medical Model of psychotherapy that emphasizes delivering specific active ingredients of a treatment. The Contextual Model of psychotherapy, on the other hand might define a therapist as competent to the extent that the therapist is interpersonally skilled, empathic, and able to engage clients in the actions of the therapy. Wampold and Imel report on a meta analysis of 28 studies conducted by Webb and colleagues (2010) who found a small and non-significant relationship between therapist adherence and patient outcomes (r = .02), and a small and non-significant relationship between therapist competence and patient outcomes (r = .07). Type of treatment (e.g., CBT, IPT, dynamic) did not affect these associations – in other words adherence and competence were not more important to CBT than to other treatments. However, competence seemed to be more important for the treatment of depression (r = .28). Perhaps depression responds better to specific techniques. The finding that competence was generally not related to outcomes was surprising, however generally competence is narrowly defined as how well a therapist delivered the treatment not how well the therapist was able to establish a therapeutic context. Previous researchers concluded that when clients liked working with a therapist, clients got better, and therapists were rated as more competent as a result. A number of studies appear to indicate that therapist competence is really a function of the client’s characteristics not to what the therapist does. For example, clients with more severe personality problems could make a therapist appear less competent, and these clients may have poorer outcomes. If this is the case, it would create a paradoxical situation in which therapists’ appearance of competence (i.e., ability to deliver a manualized intervention well) is largely determined by the client and not by the therapist.

Practice Implications

In contrast to the findings about adherence and competence, the therapeutic alliance is robustly related to patient outcomes. Also in contrast, the size of the alliance-outcome relationship is almost entirely due to the skills of the therapist, not the client’s characteristics. In other words, therapist competence is not a matter of whether they can do a good job of following a manual, but rather therapist competence is likely a matter of creating the right conditions (i.e., interpersonal skill, alliance, empathy, etc.) for delivering evidence-based interventions by which many clients improve. However, some therapists are better at these facilitative interpersonal skills than others.

The Great Psychotherapy Debate: Since in April, 2015 I review parts of The Great Psychotherapy Debate (Wampold & Imel, 2015) in the PPRNet Blog. This is the second edition of a landmark, and sometimes controversial, book that surveys the evidence for what makes psychotherapy work. You can view parts of the book in Google Books.

Wampold, B.E. & Imel, Z.E. (2015). The great psychotherapy debate: The evidence for what makes psychotherapy work (2^nd edition). New York: Routledge.

In this part of the book, Wampold and Imel discuss the importance of client expectations on psychotherapy outcomes. In particular, they equate client expectations with the placebo effect. In the July, 2015 PPRNet blog, I discussed Wampold and Imel’s distinction between the Contextual Model of psychotherapy and the Medical Model of psychotherapy. One pathway of the Contextual Model indicates that patients who accept an explanation for their disorder and who agree with therapists about therapy interventions, experience expectations that have a powerful impact on patients’ emotions and cognitions. The placebo effect has long been known to improve patients’ response to medical interventions. The placebo effect is defined as the difference between a supposedly inert event or medication and the natural course of the disorder. By contrast, the specific effect of an intervention or medication (e.g., an antidepressant) is defined as the difference between the medication and the placebo (i.e., the effect of a medication over and above the effect of a placebo). In one important meta analysis, the placebo effect accounted for about 68% of the antidepressants’ impact on depression scores. In other words, the placebo effect (i.e., the expectation of receiving help) has a powerful impact on depression. Generating an expectation of improvement (“this pill is an antidepressant that will reduce your depression”) involves: (1) providing a plausible explanation for the disorder (“depression is biochemical imbalance, and this pill [actually an inert placebo] will help”), and (2) having a relationship with an empathic provider. Client expectations of improvement result in mental health outcomes that approach the effects of standard medical treatment for depression. In psychotherapy, creating expectations about the effectiveness of the intervention, providing an explanation of the disorder based on psychological and biological theories, and agreeing on the tasks and goals of therapy are an integral part of the treatment. In other words, the placebo response is part of what makes psychotherapy work, and good therapists capitalize on its effects.

Practice Implications

Patient expectations about the effectiveness of the therapy, their agreement with the therapist on the tasks and goals of therapy, and the therapist’s empathy toward the patient are key aspects that will increase the effectiveness of a therapeutic intervention. The explanation of the disorder and the treatment approach are embedded in psychological theories that typically underpin evidence-based psychotherapies.

The Great Psychotherapy Debate: Since in April, 2015 I review parts of The Great Psychotherapy Debate (Wampold & Imel, 2015) in the PPRNet Blog. This is the second edition of a landmark, and sometimes controversial, book that surveys the evidence for what makes psychotherapy work. You can view parts of the book in Google Books.

Wampold, B.E. & Imel, Z.E. (2015). The great psychotherapy debate: The evidence for what makes psychotherapy work (2^nd edition). New York: Routledge.

In this part of the book, Wampold and Imel reviewed the research literature on the therapeutic alliance. The therapeutic alliance is considered a pan-theoretical construct that is critical to the success of all psychotherapies. Alliance is defined as the: (a) agreement on the goals of therapy, (b) agreement on the tasks of therapy, and (c) the bond between therapist and client. Numerous meta analyses across several decades demonstrate a robust relationship between the alliance and therapy outcome. For example, Horvath and colleagues (2011) conducted a meta analysis with 190 studies that included over 14, 000 clients in which the average effect size was r = .28, indicating a moderate and significant association between alliance and outcomes. Some researchers argued that this is an under-estimation of the alliance outcome relationship. In Horvath and colleagues’ meta analysis, they found no difference between type of psychotherapy (CBT, interpersonal, dynamic) and the alliance – outcome relationship. However, the alliance may work differently in some therapies. For example, in CBT there is some evidence that the collaborative bond is not related to outcomes, but rather the agreement on tasks and goals is related to patient outcomes. This highlights that an alliance cannot happen without techniques; in other words, if techniques fail to engage the patient in the work of therapy, then the technique is not working properly. Wampold and Imel also reviewed the research on whether the therapist or the patient is most influential in developing an alliance. Using sophisticated statistical techniques, they were able to disentangle the effects of therapists and clients. More effective therapists were those who had stronger alliances with patients, and their patients had better outcomes. However, the patient’s contributions to developing an alliance were not significant. Finally, Wampold and Imel reviewed the research on whether early alliance causes good outcomes, or whether early outcomes causes a good alliance. If the latter were true, then the therapeutic alliance would simply be an artifact of early improvement – that is, the alliance would not be necessary for patients to improve. Most of the studies, which were conducted by researchers of different theoretical orientations, concluded that early alliance predicts outcomes and not the other way around. There is some evidence that change in the alliance and change in symptoms have a reciprocal impact – as the alliance grows the patient subsequently improves and as the patient improves the alliance subsequently grows.

Practice Implications

Clearly, developing and maintaining a therapeutic alliance is important to achieving good patient outcomes in psychotherapy. The alliance is not independent from techniques of psychotherapy. In other words, therapists and clients have to agree on the tasks and goals of treatment, and this agreement is fundamental to all treatment modalities offered to patients. If there is no agreement, then therapists have to consider changing course or discussing with the client ways of achieving an agreement. Over and above that, therapists and clients must have some interpersonal bond that is likely underpinned by the therapist’s empathy, positive regard, and concern for the client. The research is clear that it is the therapist who most strongly contributes to the development of an alliance, and so it is the therapist’s responsibility to nurture a positive working alliance.

Angus, L., Watson, J.C., Elliott, R., Schneider, K., & Timulak, L. (2015) Humanistic psychotherapy research 1990–2015: From methodological innovation to evidence-supported treatment outcomes and beyond. Psychotherapy Research, 25, 330-347.

In this wide-ranging review, Angus and colleagues provide an overview of humanistic psychotherapy research from 1990-2015. For this blog I will focus on the efficacy research that they review. Humanistic psychotherapy addresses how people can come to know themselves and each other, and to fulfill their aspirations. This type of therapy emphasizes the personal, interpersonal, and contexts within which clients reflect on their relationships with the self, others, and the world. Carl Rogers is probably the best known early proponent of humanistic client centred psychotherapy. Humanistic psychotherapy focuses on a genuinely empathic therapeutic relationship to promote in-therapy client emotional experiencing, emphasizes meaning-making, and is person-centred. One of the questions raised by Angus and colleagues was: are humanistic psychotherapies efficacious. Here they mainly summarize a previous review by Elliot and colleagues (2013). In a meta analysis of 191 studies and over 14,000 clients, humanistic psychotherapies are associated with large pre to post therapy client change (g = .93) which are maintained over early (< 12 months) and late (> 12 months) follow ups. Further, in 31 studies of over 2,000 clients, those who received humanistic therapies show large gains compared to those who receive no treatment (g = .76). In 100 studies of over 6,000 clients, humanistic therapies had equivalent outcomes to other therapies (g = .01), including CBT (22 studies, g = -.06). Humanistic therapy was most effective for interpersonal/relational trauma, and depression (for which it is considered an evidence supported treatment). There is also good evidence for the efficacy of humanistic therapy for psychotic conditions. However, humanistic therapies may be less effective than CBT for anxiety problems.

Practice Implications

Humanistic psychotherapy that focuses on a genuinely empathic therapeutic relationship that emphasizes client emotional experiencing and meaning-making is efficacious for a number of mental health problems. Rogers argued that non-judgemental acceptance, warmth, and congruence were necessary for good client outcomes, and an accumulating body of research is supporting these early propositions. The evidence for the importance of therapist empathy to improve client outcomes is particularly compelling.

Author email: langus@yorku.ca