Types of Therapy Explained

Choosing a therapist without knowing their approach is like choosing a medication without knowing what it treats. Different therapy types have different mechanisms, different target problems, and different evidence bases. Matching the right approach to the right problem significantly improves outcomes.

That said, common factors across all evidence-based therapies — a safe therapeutic relationship, a coherent rationale for the problem, and active work toward change — account for a substantial portion of outcomes. The best therapy is one you attend consistently with a therapist you trust.

Therapy Type	Approach	Duration (typical)	Best Evidence For
CBT	Thoughts, behaviours, patterns	12–20 sessions	Anxiety, depression, OCD, phobias, PTSD
DBT	Skills, emotion regulation, distress tolerance	6–12 months	BPD, self-harm, severe emotional dysregulation
ACT	Acceptance, values, psychological flexibility	8–16 sessions	Chronic pain, GAD, depression, substance use
Psychodynamic	Unconscious patterns, past relationships	Months to years	Personality issues, relationship patterns, chronic low mood
Humanistic / Person-centred	Unconditional positive regard, self-actualisation	Open-ended	Self-esteem, identity, existential concerns

CBT is the most extensively researched form of psychotherapy, with over 1,000 randomised controlled trials supporting its effectiveness across anxiety disorders, depression, OCD, PTSD, eating disorders, and more. It was developed by Aaron Beck in the 1960s.

CBT works on the principle that thoughts, feelings, and behaviours are interconnected — and that changing unhelpful thought patterns and behaviours produces emotional change. It is structured, time-limited, and skills-based, typically lasting 12–20 sessions with homework between sessions.

• Cognitive component: identifying and restructuring cognitive distortions through thought records and behavioural experiments
• Behavioural component: exposure hierarchies for anxiety; activity scheduling for depression; behaviour experiments to test beliefs
• Skills transfer: the explicit goal is that the client becomes their own therapist by the end

Tip: CBT requires active participation between sessions. The between-session homework is not optional — research shows it accounts for a significant portion of outcomes. Ask your therapist to explain the rationale for each exercise.

DBT was developed by Marsha Linehan in the 1980s, originally for borderline personality disorder (BPD) — a condition involving intense emotional reactions, unstable relationships, and self-harm. It has since expanded to treat other presentations involving severe emotional dysregulation.

DBT combines CBT techniques with mindfulness and acceptance strategies. The name reflects its core tension: accepting yourself as you are while simultaneously working to change. Standard DBT is delivered in four skills modules:

DBT Module	Focus	Example Skills
Mindfulness	Present-moment awareness, non-judgement	Observe, describe, participate
Distress tolerance	Surviving crises without making things worse	TIPP, ACCEPTS, self-soothe
Emotional regulation	Understanding and changing emotional responses	Opposite action, check the facts
Interpersonal effectiveness	Maintaining relationships while meeting needs	DEAR MAN, GIVE, FAST

Full DBT involves individual therapy, a skills group, phone coaching, and therapist consultation — making it intensive and resource-heavy but highly effective for complex presentations.

ACT (pronounced as the word "act") is a third-wave CBT approach developed by Steven Hayes. Rather than changing the content of thoughts, ACT aims to change the relationship with thoughts — reducing the degree to which they control behaviour.

The core model is the psychological flexibility hexagon: acceptance, defusion, present moment awareness, self-as-context, values, and committed action. ACT does not try to reduce anxiety or depression directly; instead, it helps people live according to their values despite experiencing distress.

• Defusion: learning to observe thoughts rather than be fused with them ("I notice I am having the thought that I will fail")
• Acceptance: making room for difficult emotions without fighting them
• Values work: clarifying what matters most to build a meaningful life regardless of symptoms

Tip: ACT is particularly useful when people have already tried to control or eliminate anxiety and found it counterproductive. The message — "you don't have to feel better to live well" — is especially valuable for chronic conditions.

Psychodynamic therapy is descended from psychoanalysis and focuses on unconscious processes, early attachment experiences, and how past relationships shape current patterns of thinking, feeling, and relating. It is typically less structured than CBT, longer in duration, and explores themes as they emerge rather than following a protocol.

Evidence supports psychodynamic therapy for personality difficulties, chronic depression, relationship problems, and conditions where symptom-focused approaches have not produced lasting change.

Humanistic and person-centred therapy (Carl Rogers) provides a non-directive, empathically attuned space in which clients explore their own experience. The therapist does not direct content or teach skills — instead, unconditional positive regard and genuine empathy are the active ingredients.

Approach	Therapist Role	Focus	Duration
Psychodynamic	Reflective, interpretive	Past patterns, unconscious processes	Months–years
Person-centred	Empathic witness	Present self-exploration	Open-ended
Existential	Philosophical co-explorer	Meaning, mortality, freedom	Open-ended
Gestalt	Active, experiential	Present awareness, unfinished business	Medium-term

Tip: If you have tried structured CBT and found it too prescriptive, or if your difficulties feel rooted in longstanding relationship patterns rather than specific symptoms, a psychodynamic or humanistic approach may fit better. The best predictor of fit is an initial consultation.