Psychological therapies for depression

Article written and reviewed by Dr Luca Moretti

Psychological therapies are active treatments for depression based on explicit theoretical models, defined clinical procedures and, for the best studied approaches, evidence of efficacy from randomized studies, systematic reviews and meta analyses. They do not constitute a single therapy: they include interventions acting mainly on cognitive processes, behavior and avoidance, interpersonal relationships, problem solving, dynamic patterns, or the relationship a person has with thoughts and emotions. In clinical practice, psychotherapy can be used as initial treatment, in combination with pharmacotherapy, or during continuation and relapse prevention phases. The choice does not derive from a hierarchy that applies to every patient, but from the relationship between clinical severity, characteristics of the episode, risk, preferences, previous treatments, availability of trained therapists and the specific evidence base of the intervention being considered.

Large contemporary meta analyses show that several structured psychotherapies are superior to control conditions in adult depression, while average differences among the main approaches are often modest and more uncertain than a simple ranking would suggest. However, the strength of evidence is not identical for all therapies: CBT, cognitive therapy, behavioral activation and interpersonal therapy have a particularly extensive evidence base; problem solving and brief psychodynamic psychotherapy have favorable evidence but a less extensive or more heterogeneous literature; ACT, metacognitive therapy and reminiscence interventions may be useful in appropriate settings, but should not automatically be equated with the more established options in guidelines for major depressive disorder.

Clinical assessment before starting psychotherapy

The decision to start psychotherapy first requires a diagnostic assessment broad enough to determine whether symptoms belong to a depressive disorder, an adjustment reaction, bipolar disorder, a psychotic presentation, a substance use disorder or a medical condition requiring specific assessment. The presence of sadness or anhedonia alone does not identify an indication for a particular psychotherapeutic model. Duration, course, previous episodes, level of functional impairment, anxiety and somatic symptoms, sleep disorders, alcohol or other substance use, concurrent medical conditions and current therapies must be reconstructed. The assessment should also include previous psychological and pharmacological treatments, benefit obtained, adherence, adverse effects and reasons for any discontinuation.

A separate step concerns suicide risk and safety. Death wishes, suicidal thoughts, planning, access to means, previous attempts, agitation, impulsivity, psychotic symptoms and rapid clinical change must modify the level of care and monitoring plan. The presence of suicide risk is not in itself a contraindication to psychotherapy, but it prevents psychotherapy from being considered an isolated intervention when more intensive surveillance, pharmacological treatment, involvement of emergency services or hospitalization are required. Similarly, depression with catatonia, severe nutritional or psychomotor impairment, psychotic symptoms or a need for a very rapid response requires a broader therapeutic strategy than outpatient psychotherapy alone.

Searching for a history of mania or hypomania is particularly important because a depressive episode may be the initial or predominant manifestation of bipolar disorder. In these cases, formulation and pharmacotherapy differ from unipolar depression and psychotherapy generally takes an integrated role in treatment of the mood disorder. Comorbidities such as post traumatic stress disorder, obsessive compulsive disorder, eating disorders, personality disorders or neurocognitive disorders may also require different priorities and techniques from psychotherapy focused exclusively on depression.

Finally, it should be clarified which problem the patient wants to address and which form of treatment is realistically sustainable. Preference for a psychological intervention, willingness to complete exercises between sessions, ability to attend consistently, schedules, costs, accessibility, language and the therapist's cultural competence affect real world effectiveness as much as the theoretical choice of model. The quality of the therapeutic alliance and the ability to agree on understandable goals are cross-cutting factors that do not replace technique, but influence its application.

How psychological treatment is selected

Modern guidelines favor a shared decision making rather than automatically prescribing the same treatment to everyone. For less severe depression, psychological options of different intensity are generally considered, including guided self help, group interventions and structured individual therapies. In more severe depression, individual psychotherapy, antidepressants or their combination are used more frequently, selected according to clinical characteristics and preferences. Combination treatment is not mandatory in every moderate or severe episode, and psychotherapy is not reserved for mild forms.

The concept of stepped care describes the use of interventions proportionate to need, increasing intensity when response is insufficient or the clinical situation requires it. However, this does not mean that every patient must rigidly pass through the same steps. A person with severe depression, a history of recurrence, substantial functional deterioration or a need for rapid treatment may require a more intensive level of care from the outset. Conversely, some patients with less severe symptoms may benefit from relatively brief, focused interventions without requiring more complex therapies.

The choice of model can be guided by the clinically dominant mechanism without turning this correspondence into a deterministic rule. Marked withdrawal from activities and reduced environmental reinforcement make behavioral activation a particularly intuitive option. Negative automatic thoughts, rigid beliefs and cognitive biases can be addressed with cognitive therapy or CBT. Interpersonal problems temporally connected to the episode may make IPT a coherent choice. Difficulties with everyday problem solving may point toward PST, while rumination and metacognitive processes may be targets of specific interventions. These are therapeutic formulations, not diagnostic tests capable of predicting response with certainty.

Previous response is highly valuable practical information. A remission achieved in the past with a well delivered psychotherapy may support choosing it again, especially if the patient remains familiar with the skills learned. Nonresponse, however, requires distinguishing among inadequacy of the model, insufficient treatment dose, poor adherence, alliance problems, incomplete diagnosis, untreated comorbidity, or clinical worsening requiring pharmacotherapy or another level of care.

Main psychotherapy models used in depression

cognitive behavioral therapy integrates behavioral and cognitive interventions within a shared case formulation. Treatment typically uses monitoring, activation, behavioral experiments, identification of automatic thoughts, examination of evidence, work on beliefs and relapse prevention planning. Beck's cognitive therapy represents one of the historical cores of CBT and places greater emphasis on the hierarchical organization of automatic thoughts, assumptions and schemas. The distinction between the two terms is therefore historical and technical, not a distinction between two completely independent families.

behavioral activation focuses on the relationship among mood, context, avoidance and access to potentially reinforcing experiences. It does not necessarily require systematic restructuring of thought content. Its theoretical parsimony and the possibility of delivery by appropriately trained professionals have generated considerable interest in clinical services. The COBRA trial and meta analyses support the efficacy of behavioral activation, without demonstrating that it is superior to CBT in every population.

interpersonal therapy links the depressive episode to current interpersonal problems and works in classic focal areas such as grief, role disputes, transitions and interpersonal difficulties. It is a time limited, manualized therapy with an extensive evidence base for depression. problem-solving therapy is instead a pragmatic intervention that trains patients to define modifiable problems, formulate goals, generate alternatives, choose solutions and evaluate outcomes; it has been studied particularly in primary care and late life depression.

brief psychodynamic psychotherapies constitute a heterogeneous family of interventions focused on relational patterns, affects, defenses and conflicts that become relevant in the relationship between current experience and personal history. Meta analyses document efficacy compared with controls, but the evidence base is less homogeneous than that available for CBT and IPT. It is therefore incorrect to describe a single set of techniques as representative of all brief dynamic psychotherapy.

Among contextual and so called third wave approaches, ACT aims to increase psychological flexibility through acceptance, defusion, present moment awareness, self as context, values and committed action. metacognitive therapy by Wells instead focuses on metacognitive beliefs and the cognitive attentional syndrome, with particular attention to rumination, worry, threat monitoring and mental control strategies. Both have favorable results, but the quantity and quality of depression specific evidence do not justify presenting them as universally equivalent substitutes for more established psychotherapies. Mindfulness based cognitive therapy has a particularly relevant role in relapse prevention for people with recurrent depression.

In older adults, reminiscence, life review and life review therapy use autobiographical material in different ways. Structured psychotherapeutic forms of life review show effects on depressive symptoms in several studies and meta analyses, but should not be confused with simply recalling pleasant events or automatically considered equivalent to standard treatment for major depressive disorder. The degree of structure, presence of clinical symptoms and care setting modify the outcomes observed.

Format, intensity, therapeutic relationship and monitoring

Psychotherapy may be individual, group, couple or family based, delivered in person or through digital platforms or video consultations. The format is not interchangeable in every circumstance: protocol content, severity, digital literacy, privacy, clinical risk and ability to maintain continuity must be considered. Guided digital interventions can expand access, but clinical supervision and a procedure for managing deterioration remain essential when treating patients with significant depression.

Duration varies substantially across models and patients. It is preferable to describe treatment in terms of adequate dose and the specific protocol rather than assigning a universal number of sessions to a therapy. Some programs are deliberately brief, while others include an acute phase followed by consolidation or maintenance sessions. Duration may increase in the presence of chronicity, comorbidity, relevant social problems, personality disorders, need for adaptations or partial response.

Systematic symptom monitoring using validated scales, together with assessment of functioning, makes it possible to determine whether treatment is producing clinically meaningful change. Questionnaires such as PHQ-9 or BDI can complement the interview, but do not replace clinical assessment or independently define diagnosis or remission. Failure of symptoms to improve requires early reassessment of the formulation, not indefinite continuation of the same intervention without modification.

Therapeutic alliance, empathy, collaboration and shared goals are common factors associated with outcome, but their importance does not make specific techniques irrelevant. An evidence based therapy loses effectiveness if applied without competence, without adaptation to the patient or without sufficient adherence to the model. Similarly, a therapeutic relationship perceived as positive is not enough to transform an intervention without demonstrated efficacy into a treatment for depression.

The choice of format must also consider privacy, digital literacy, sensory disabilities, availability of appropriate spaces and clinical risk. Guided online interventions can increase access, but require clear procedures to identify deterioration and suicide risk. Group treatment can provide normalization and mutual learning, but is not suitable for every patient and requires confidentiality rules. The mode of delivery is therefore a clinical component of treatment, not merely a logistical detail.

Efficacy, combination with medication and relapse prevention

Meta analyses of hundreds of studies confirm that structured psychotherapies reduce depressive symptoms compared with waiting lists, treatment as usual or other controls, although with heterogeneity and a risk of overestimation in small or methodologically weaker studies. In comparisons between psychotherapy and pharmacotherapy, average efficacy may be similar in several settings, but average group equivalence does not mean the two treatments are interchangeable for every individual patient. Time to response, preferences, pharmacological adverse effects, comorbidity, relapse history and clinical risk may change the choice.

Combination of psychotherapy and an antidepressant may provide an advantage over pharmacotherapy alone in part of the literature and is an important option when the clinical picture is more complex or response to a single treatment is incomplete. However, it is not scientifically accurate to state that every moderate or severe depression necessarily requires both interventions. Contemporary guidelines allow several initial options and shared decision making, while keeping patient safety as the priority.

The continuation phase aims to consolidate remission and reduce the risk of symptom return. Some interventions, including cognitive therapy and CBT, may leave skills that remain usable after the acute phase ends; MBCT has specific evidence for relapse prevention in recurrent depression. IPT may also be used in maintenance programs, while longitudinal data for other models are less extensive. The choice of preventive strategy depends on the number and severity of previous episodes and the effectiveness of treatments already tried.

Success is not limited to reduction of a symptom score. Remission, recovery of social and occupational functioning, quality of life, resumption of meaningful activities, relationship management and the ability to recognize relapse early are clinically relevant outcomes. Incomplete remission maintains a higher risk of relapse and justifies reassessment of treatment.

Limitations, safety and quality of the intervention

Psychotherapy is generally well tolerated, but is not free from possible adverse outcomes. Transient worsening of distress, increased anxiety during exposure to difficult themes, relational conflicts, dependence on the therapist, feelings of failure after nonresponse, or delayed access to more appropriate treatments are events that should be recognized. Treatment quality requires informed consent, clear professional boundaries, protection of confidentiality and monitoring for deterioration.

A frequent concern is the overgeneralization of evidence. A trial conducted in adults with depression does not automatically demonstrate identical efficacy in adolescents, pregnancy, the postpartum period, very old age, psychotic depression or bipolar disorder. For each population, specific evidence and protocol adaptations must be considered. Likewise, the efficacy of a manualized version cannot be attributed without verification to interventions that use only its name or isolated techniques.

The therapist must have adequate training in the model being applied and be able to recognize when the case requires additional medical or psychiatric expertise. Psychotherapy does not replace urgent assessment of a patient with imminent suicide risk, severe self neglect, catatonia, mania, intoxication or severe psychotic symptoms. In these scenarios, psychological treatment may be part of the pathway, but within multidisciplinary management proportionate to risk.

For a concise comparison of mechanism, clinical focus and level of evidence for the main approaches, see the comparative table of psychotherapies for depression. The individual pages instead provide detailed discussion of the rationale, techniques, indications, limitations and evidence for each treatment without turning average differences between studies into prescriptive rules that apply to every person.

Therapist competence includes training in the model, supervision, diagnostic competence and emergency management. A manualized treatment does not prevent errors if applied without case assessment or rigidly. Conversely, adapting language and pace does not necessarily reduce fidelity: the key is to preserve the active principles of treatment and document why a modification was made.

Psychotherapy can also produce adverse outcomes or no benefit. Worsening symptoms, dependence on the therapist, relational conflicts induced by inappropriate interpretations, or delays in necessary treatments should be recognized as clinical possibilities. Systematic monitoring allows a negative trajectory to be identified early and the strategy to be changed, rather than automatically interpreting every difficulty as an inevitable part of the therapeutic process.

Bibliography
1. National Institute for Health and Care Excellence. Depression in adults: treatment and management. NICE guideline NG222. 2022; last reviewed 2026.
2. Lam RW et al. Canadian Network for Mood and Anxiety Treatments (CANMAT) 2023 Update on Clinical Guidelines for Management of Major Depressive Disorder in Adults. Canadian Journal of Psychiatry. 69(9), 2024, 641-687.
3. Department of Veterans Affairs, Department of Defense. VA/DoD Clinical Practice Guideline for the Management of Major Depressive Disorder. Version 4.0. Washington, DC, 2022.
4. American Psychological Association. Clinical Practice Guideline for the Treatment of Depression Across Three Age Cohorts. Washington, DC: American Psychological Association, 2019.
5. Cuijpers P et al. Psychotherapies for depression: a network meta-analysis covering efficacy, acceptability and long-term outcomes of all main treatment types. World Psychiatry. 20(2), 2021, 283-293.
6. Cuijpers P et al. Cognitive behavior therapy vs. control conditions, other psychotherapies, pharmacotherapies and combined treatment for depression: a comprehensive meta-analysis including 409 trials with 52,702 patients. World Psychiatry. 22(1), 2023, 105-115.
7. Cuijpers P et al. Psychologic Treatment of Depression Compared With Pharmacotherapy and Combined Treatment in Primary Care: A Network Meta-Analysis. Annals of Family Medicine. 19(3), 2021, 262-270.
8. Cuijpers P et al. Adding psychotherapy to antidepressant medication in depression and anxiety disorders: a meta-analysis. World Psychiatry. 13(1), 2014, 56-67.
9. Barth J et al. Comparative efficacy of seven psychotherapeutic interventions for patients with depression: a network meta-analysis. PLoS Medicine. 10(5), 2013, e1001454.
10. Kuyken W et al. Efficacy of Mindfulness-Based Cognitive Therapy in Prevention of Depressive Relapse: An Individual Patient Data Meta-analysis From Randomized Trials. JAMA Psychiatry. 73(6), 2016, 565-574.
11. Cuijpers P et al. Interpersonal psychotherapy for depression: a meta-analysis. American Journal of Psychiatry. 168(6), 2011, 581-592.
12. Ekers D et al. Behavioural Activation for Depression; An Update of Meta-Analysis of Effectiveness and Sub Group Analysis. PLoS One. 9(6), 2014, e100100.
13. Cuijpers P et al. Problem-solving therapy for adult depression: An updated meta-analysis. European Psychiatry. 48(1), 2018, 27-37.
14. Driessen E et al. The efficacy of short-term psychodynamic psychotherapy for depression: A meta-analysis update. Clinical Psychology Review. 42, 2015, 1-15.
15. Zhao B et al. Effect of acceptance and commitment therapy for depressive disorders: a meta-analysis. Annals of General Psychiatry. 22(1), 2023, 34.
16. Normann N et al. The efficacy of metacognitive therapy for anxiety and depression: a meta-analytic review. Depression and Anxiety. 31(5), 2014, 402-411.
17. Pinquart M. Effects of reminiscence interventions on depression and anxiety: a meta-analysis of randomized controlled trials. Aging & Mental Health. 28(5), 2024, 717-724.