The Psychotherapies: A Guide to the Landscape

Capstone to a twelve-part series — how the major therapies relate, what the evidence actually says, and how to choose

What This Series Is

This series examines the major psychotherapies in twelve documents, each written to the same standard: an accurate account of what the treatment is, where it came from, how it works in the room, what the research genuinely shows, and what its serious critics say — with the criticisms treated as load-bearing content rather than disclaimers. The aim throughout has been the synthesis a sophisticated psychiatric practice owes its patients: neither the brochure version of any therapy nor the debunker's version, but both halves of the truth held together.

The eleven treatment documents: cognitive behavioral therapy (CBT); acceptance and commitment therapy (ACT); dialectical behavior therapy (DBT); mindfulness-based cognitive therapy (MBCT); existential psychotherapy; logotherapy; psychodynamic psychotherapy; psychoanalysis; EMDR; interpersonal psychotherapy (IPT); and humanistic/person-centered therapy. The twelfth is a biographical compendium of the field's major figures.

This capstone does three things: maps the families, distills the comparisons, and states the cross-cutting conclusions the series as a whole supports.

The Map: Five Families

The eleven therapies sort into five families, each organized around a different answer to the question where does psychological suffering live, and what changes it?

The cognitive-behavioral family (CBT and its disorder-specific protocols) locates suffering in learned patterns of thinking and behaving — appraisals, avoidance, reinforcement — and changes it through examination, skills, and above all disconfirming experience: exposure, behavioral experiments, activation. Its signature virtues are specificity and measurement; its signature treatments (exposure for anxiety and OCD, behavioral activation, CBT-I for insomnia) are among the most decisive in psychiatry.

The third wave (ACT, DBT, MBCT) keeps the behavioral foundations but shifts the target from the content of inner experience to a person's relationship with it: acceptance, defusion, mindfulness, values — with DBT adding a comprehensive structure for severe dysregulation and MBCT a meditation-based relapse-prevention program for recurrent depression.

The psychodynamic family (psychodynamic psychotherapy and its intensive original, psychoanalysis) locates suffering in unconscious conflict and internalized relational templates, and changes it through a relationship in which the patterns appear, are understood, and are slowly outgrown — insight, new relational experience, and working through. Its modern evidence base centers on equivalence for common disorders, leadership (with DBT) in personality pathology, and suggestive post-termination gains.

The humanistic-existential family (person-centered/experiential therapy, existential therapy, logotherapy) locates suffering in thwarted growth, incongruence, and the unmet givens of existence — and treats the quality of relationship (empathy, regard, genuineness) and the confrontation with meaning, freedom, and finitude as the active ingredients. Its empirical legacy is the relational floor under all therapy; its evidence-bearing modern forms are emotion-focused therapy and the meaning-centered interventions in serious illness.

The structured interpersonal and trauma-processing treatments (IPT, EMDR) are pragmatic engineering projects: IPT treats depression by treating its interpersonal context — grief, disputes, transitions — in a brief medical-model frame; EMDR treats trauma by structured, dosed processing of the memories themselves. Both are guideline first-line treatments whose theories are thinner than their results.

The Comparison at a Glance

Therapy	Core idea	Typical course	Strongest evidence	Reach for it when	Chief caution
CBT	Thoughts/behaviors maintain distress; test and change them	8–20 sessions	Anxiety disorders, OCD (ERP), depression, insomnia (CBT-I), PTSD (CPT/PE), eating disorders	A disorder-specific protocol exists for the presentation	Effects inflated by weak comparators; therapist drift from exposure/homework
ACT	Stop the war with inner experience; act on values	8–16 sessions	Chronic pain; broad parity with CBT for anxiety/depression	Pain, multimorbidity, symptom-elimination unrealistic, CBT-averse patients	No demonstrated superiority to CBT; mediation evidence has measurement problems
DBT	Emotion dysregulation drives the behavior; build skills, in structure	~12 months, four modes	Self-harm and suicidality in BPD; adolescent self-harm	Severe, recurrent self-harm/suicidality	Resource-heavy; widely diluted ("DBT-informed"); generalist treatments rival it
MBCT	Catch relapse at the level of mind-mode, early	8-week class + daily practice	Relapse prevention, recurrent depression (≥3 episodes); drew with maintenance ADM	Remitted recurrent depression, esp. wanting to taper medication	Not an acute treatment; specificity vs. matched controls unsettled; practice dose is real
Existential	Suffering as confrontation with death, freedom, isolation, meaning	Open-ended; brief in medical forms	Meaning-centered interventions in serious illness (MCP, dignity therapy, CALM)	Boundary situations: serious illness, bereavement, meaning crises	Core tradition barely trialed; never primary for protocol-owned disorders
Logotherapy	Meaning is the primary motivation; recover it	Short-to-medium	Paradoxical intention (insomnia/anxiety); meaning construct; MCP descendants	Demoralization, existential vacuum, unavoidable suffering	Thin trials for the classical form; suffering doctrine easily misapplied
Psychodynamic	Unconscious relational patterns repeat; understand and outgrow them	12–40 sessions (brief) to years	Equivalence with CBT (depression, anxiety, somatic); BPD (MBT/TFP); chronic depression (Tavistock)	Characterological, relational, recurrent problems; "why do I keep doing this?"	Smaller trial base; sleeper-effect and long-term-superiority claims contested
Psychoanalysis	Maximal-dose dynamic treatment; the transference neurosis analyzed	3–5×/week, years	Observational/dose-response durability in suitable patients	Chronic characterological suffering after adequate briefer treatment; clinician formation	Superiority over briefer treatment unproven; cost; access
EMDR	Process the stuck memory; symptoms follow	6–12 sessions (single trauma)	PTSD — equivalent to trauma-focused CBT; all major guidelines	PTSD, esp. patients refusing narrative exposure	Eye movements' specific contribution unproven; indication creep beyond PTSD
IPT	Depression lives in interpersonal context; fix the context	12–16 sessions	Depression (incl. perinatal, adolescent, geriatric); maintenance; global delivery	Event-anchored depression: grief, disputes, transitions; perinatal	Thin mechanism evidence; workforce scarce; weak for anxiety disorders
Person-centered / experiential	The relationship is the treatment; growth resumes under the right conditions	8–24+ sessions	Depression at national scale (NHS parity data); EFT trials; relational meta-analyses	Depression, grief, identity/relational distress; engagement-stage work	"Sufficient for everything" claim failed; not primary for protocol-owned disorders

Choosing by Presentation

The series' practical distillate — where the evidence concentrates, by clinical situation:

Anxiety disorders, OCD, panic, phobias. Exposure-based CBT protocols own this territory: ERP for OCD, interoceptive exposure for panic, the Clark-Wells package for social anxiety. ACT is a reasonable alternative frame for the exposure; nothing else is first-line. A service's honest test: do your anxiety clinicians actually do exposure?

PTSD. Two co-equal first lines — trauma-focused CBT (CPT/PE) and EMDR — with selection legitimately driven by patient preference and tolerability of format. Complex trauma adds stabilization phases and longer horizons regardless of modality.

Depression, acute. The widest menu in psychiatry, and a genuine equivalence zone: CBT, behavioral activation, IPT, short-term psychodynamic therapy, and person-centered/experiential therapy all carry first-line-grade evidence. Choose by fit: rumination-dominant and structure-loving → CBT/BA; event-anchored (loss, dispute, transition), perinatal, adolescent → IPT; relational-characterological themes, "why do I keep doing this" → psychodynamic; relationship-averse-to-worksheets, identity and self-worth themes → experiential. Moderate-to-severe and recurrent: combine with medication.

Depression, recurrent — staying well. Three evidence-based prophylaxis routes: maintenance medication, maintenance IPT, and MBCT (the supervised route to tapering medication with comparable two-year relapse risk). The relapse-signature-and-plan idea is portable across all three.

Chronic, treatment-resistant depression. Long-term psychodynamic therapy holds the specific randomized card (Tavistock); ACT and behavioral activation offer workability-framed alternatives; combination and sequencing beat brand loyalty.

Self-harm, suicidality, borderline personality. Comprehensive DBT for the most severe and recurrent; MBT and TFP as evidence-based alternatives; good generalist structured care (GPM) for the broad middle. The structural finding to internalize: any coherent, team-supported, crisis-framed treatment beats unstructured care; the brand matters less than the structure.

Insomnia. CBT-I, before hypnotics. Full stop.

Serious medical illness, demoralization, end of life. The meaning-centered family: MCP, dignity therapy, CALM, supportive-expressive groups — plus IPT-style and existential work for the transitions and griefs of illness.

Grief, role transitions, life crises. IPT (when depression is present), person-centered/experiential work, existential therapy — by depth and frame preference.

Meaning crises and the empty success. Logotherapy and existential therapy's home ground; ACT's values work is the protocolized cousin.

Chronic relational and characterological patterns. The psychodynamic family's territory, with schema therapy as the CBT-side bridge; brief therapies treat the episode, this work treats the generator.

Engagement and ambivalence (any diagnosis). Motivational interviewing — the person-centered tradition's pragmatic descendant — before and inside everything else.

What the Whole Series Shows: Seven Cross-Cutting Conclusions

1. Equivalence is the rule; specificity is the exception — and both are real. Across honest head-to-head trials, bona fide therapies for depression and several other conditions tie (CBT ≈ IPT ≈ STPP ≈ experiential ≈ ACT). But the exceptions are decisive where they exist: exposure for anxiety/OCD, CBT-I for insomnia, trauma-focused processing for PTSD, structured comprehensive treatment for severe self-harm. The clinical rule that follows: where a specific treatment demonstrably matters, provide it or refer for it; everywhere else, choose by fit, preference, and access with a clear conscience.

2. The relationship findings are not decoration. Alliance, empathy, positive regard, genuineness, and rupture-repair carry reliable associations with outcome across every orientation — the humanistic tradition's vindicated core. Whatever a practice offers, these are trainable, measurable, and non-optional.

3. Structure itself heals. A coherent model delivered with conviction, a focus, measurement, a crisis frame, and team support — the common skeleton of DBT, GPM, MBT, IPT, and protocol CBT — explains a large share of every brand's effect. The corollary cuts against drift: unstructured, goalless, unreviewed therapy of any orientation is the form most departed from the evidence.

4. The hard ingredients carry the effect — and are the first dropped. Exposure, homework, daily practice, diary cards, focus discipline: across traditions, the demanding components predict outcome, and "therapist drift" away from them is the field's most documented fidelity failure. Dilution has brand names ("DBT-informed," app-based "MBCT," EMDR without preparation, CBT without exposure); patients deserve the screening questions this series embeds in every document.

5. Read evidence claims with four standard discounts. Researcher allegiance inflates; weak comparators (waitlists, de-fanged "supportive therapy") inflate; early small trials inflate (effects decline as literatures mature); and signature-ingredient stories often outrun dismantling data (EMDR's eye movements, CBT's cognitive restructuring beyond behavioral activation, MBCT's meditation versus matched controls, bilateral everything). None of this makes the therapies hollow; it makes the honest effect sizes moderate, the absolute remission rates humbling (roughly half respond to any single adequate course), and sequencing/combination — not brand loyalty — the rational response to non-response.

6. Psychotherapy and medication are colleagues, not rivals. Combination outperforms either for severe and recurrent depression; psychotherapy is adjunctive, never alternative, in bipolar disorder and psychosis; CBT-I precedes hypnotics; psychological treatment shows durability advantages after discontinuation where medication does not. Every document in the series lands on the same integration.

7. Every tradition's criticisms are part of its clinical use. The series' editorial wager, stated once more: knowing that CBT's effects were inflated by weak comparators, that ACT's mediators have measurement circularity, that DBT's edge narrows against structured generalism, that analysis pathologized homosexuality within living memory, that EMDR's hat may be purple, that the recovered-memory disaster happened — this knowledge is not ammunition against the treatments; it is the condition of prescribing them honestly, with the humility that keeps a practice revising.

Using the Series

Each document follows the same ten-section architecture — definition, history, theory, clinical use, techniques, neighbors, evidence, criticisms, practical guidance with screening questions, conclusion — and cross-references the others, so they function as standalone pages or a linked library. The biographical compendium serves as the hub for the human history behind all of them.

The series:

1. CBT — the evidence-base anchor; protocols, techniques, and the honest accounting of effect-size inflation and the dismantling problem.
2. ACT — psychological flexibility, the hexaflex, RFT, and the equivalence-and-hype debates.
3. DBT — the four-mode structure, the skills technology, and the generalist challenge.
4. MBCT — relapse prevention by design; PREVENT and the meditation-specificity question.
5. Existential psychotherapy — the four givens, the boundary situation, and the evidence-bearing medical descendants.
6. Logotherapy — meaning as motivation, paradoxical intention, and the Frankl historiography.
7. Psychodynamic psychotherapy — the modern deliverable form; equivalence evidence, MBT/TFP, and the inheritance problems.
8. Psychoanalysis — the maximal-dose original; dose-response evidence and the guild's reckonings.
9. The great figures — sixty builders of the field, contested legacies included.
10. EMDR — the validated paradox; eight phases, working memory, and the purple hat.
11. IPT — the modest champion; four problem areas, perinatal and global evidence.
12. Humanistic/person-centered therapy — the relational floor; Rogers's wager, EFT, and parity at national scale.