Glossary
Key philosophical and clinical terms used across this site. These definitions reflect how the terms function in clinical context — not dictionary definitions, but working concepts that shape how therapists think about what they're doing and why.
Attachment Theory
The developmental framework originated by John Bowlby and empirically mapped by Mary Ainsworth, proposing that early caregiving relationships create internal working models that shape how people relate throughout life. The four major attachment styles — secure, anxious-preoccupied, dismissive-avoidant, and disorganized — are not diagnoses but patterns. Many contemporary modalities (EFT, AEDP, Sensorimotor Psychotherapy, NARM) draw heavily on attachment theory, using the therapeutic relationship as a corrective attachment experience.
Common Factors
The elements shared across all effective therapies — the therapeutic alliance, therapist empathy, client expectancy (hope), and agreement on goals and tasks. Research consistently finds that common factors account for more outcome variance than specific techniques. This doesn't mean techniques are irrelevant, but it does challenge the assumption that the 'active ingredient' is always the modality-specific intervention. The common factors debate runs through the entire field and is one reason the site includes both modality-specific evidence and philosophical grounding.
Countertransference
The therapist's emotional responses to the client — originally seen as the therapist's own unresolved material (classical view), now understood as a potentially valuable source of clinical information (totalist view). If a therapist consistently feels bored, irritated, protective, or confused with a particular client, that emotional response may be telling them something important about the client's relational patterns. The capacity to use countertransference well requires the therapist to distinguish their own material from what the client is evoking.
Dasein
Heidegger's term for the specific kind of being that humans have — literally 'being-there.' Unlike objects, Dasein is always already thrown into a world of meaning, always ahead of itself in its projects and possibilities, and always aware (even if dimly) of its own finitude. In existential therapy, this means the client is never a fixed entity to be diagnosed but a being-in-process whose suffering is inseparable from their way of being in the world. The therapeutic task isn't to fix a mechanism but to illuminate how the person is living.
Developmental Trauma
Chronic relational trauma occurring during critical periods of development — as distinct from single-incident trauma (a car accident, an assault). Also called complex trauma or relational trauma. Because it happens while the self is still forming, developmental trauma doesn't just leave a 'wound' on an otherwise intact person; it shapes the architecture of the self, including the capacity to regulate emotion, maintain relationships, and sustain a coherent sense of identity. This distinction matters clinically because approaches designed for single-incident PTSD (like standard PE or CPT) may not adequately address developmental trauma.
Dissociation
A disruption in the normally integrated functions of consciousness, memory, identity, emotion, perception, behavior, and sense of self. Ranges from everyday experiences (highway hypnosis, absorption in a book) to severe structural dissociation associated with complex trauma (DID, OSDD). In trauma therapy, dissociation is understood as a survival strategy — the mind's way of managing experiences that overwhelm the capacity to cope. Therapists working with dissociation must learn to work within the client's window of tolerance rather than pushing through dissociative defenses.
Empiricism
The view that knowledge comes primarily from sensory experience and observation — and in clinical psychology, that therapies should be validated through controlled experimental methods (especially randomized controlled trials). The 'evidence-based practice' movement is fundamentally empiricist. This is the epistemological foundation of CBT and most behavioral approaches. The tension with hermeneutic and phenomenological approaches isn't that one side values evidence and the other doesn't — it's that they disagree about what constitutes evidence.
Epistemology
How we know what we know — what counts as valid knowledge and evidence. Modalities differ sharply here. CBT privileges empirical measurement and replicable outcomes (empiricist epistemology). Psychoanalysis trusts the slow emergence of meaning through free association and the transference relationship (hermeneutic epistemology). Phenomenological approaches trust first-person experiential description. When clinicians argue about whether a therapy 'works,' they're often arguing from incompatible epistemologies without realizing it.
Epoché
Husserl's term for the suspension or 'bracketing' of assumptions, judgments, and theoretical commitments in order to encounter experience as it actually presents itself. Not the elimination of perspective (which is impossible) but the disciplined practice of noticing and setting aside one's preconceptions. In clinical work, this is the capacity to sit with a client without rushing to diagnose, formulate, or fix — to let the phenomenon of their experience reveal itself. This site is named after this practice.
Evidence-Based Practice
A framework for clinical decision-making that integrates three elements: the best available research evidence, clinical expertise, and patient values and preferences. Often reduced in practice to 'therapies with RCT support,' which is a distortion — the APA's own definition explicitly includes clinical judgment and client context. The hierarchy of evidence (systematic reviews > RCTs > cohort studies > case studies > expert opinion) reflects empiricist epistemology and privileges certain kinds of knowing over others. This site uses evidence tiers (guideline-recommended, RCT-supported, emerging) to represent these distinctions without collapsing them.
Existentialism
A philosophical tradition concerned with the fundamental conditions of human existence: freedom, responsibility, mortality, isolation, meaninglessness. Key figures include Kierkegaard, Heidegger, Sartre, de Beauvoir, and Camus. In therapy, existential approaches (Yalom, May, Frankl, Bugental, van Deurzen) treat anxiety not as a symptom to eliminate but as an inescapable response to being alive and aware. Existential therapy doesn't offer techniques so much as a stance — an unflinching willingness to sit with the givens of existence rather than defending against them.
Formulation
A clinical hypothesis about what's going on for a particular client — what's causing their distress, what maintains it, and what might help. Unlike a diagnosis (which categorizes), a formulation individualizes. Different modalities produce radically different formulations of the same presentation because they attend to different things: CBT formulates in terms of cognitive distortions and behavioral patterns; psychoanalysis in terms of unconscious conflict and relational templates; somatic approaches in terms of nervous system dysregulation. This site's vignettes show these differences side by side.
Hermeneutics
The theory and practice of interpretation — originally of sacred texts, now of human meaning-making broadly. In therapy, a hermeneutic approach treats symptoms, dreams, relationships, and life histories as texts that require interpretation, not just measurement. Psychoanalysis is deeply hermeneutic: it assumes that what the client says has meaning beyond its surface content, and that the therapeutic relationship itself is a text to be read. The hermeneutic circle — the idea that you can only understand the parts through the whole, and the whole through the parts — describes how clinical understanding actually develops over time.
Intersubjectivity
The shared space of experience between two or more subjects — the 'between' of human relating. In relational psychoanalysis and phenomenological therapy, the therapeutic relationship isn't just a vehicle for delivering techniques; it's the primary site of healing. The therapist's subjectivity isn't a contaminant to be controlled (as in classical analysis) but an active ingredient. What happens between therapist and client — the mutual recognition, rupture, and repair — is itself the therapeutic work.
Lineage
The historical chain of influence connecting modalities to their intellectual and clinical ancestors. EMDR grew out of behavioral desensitization but incorporated elements of psychodynamic processing. IFS emerged from family systems thinking applied inward. Somatic Experiencing draws on Peter Levine's study of animal stress responses and on the Reichian body psychotherapy tradition. Understanding lineage matters because it reveals what assumptions a modality inherited — and which ones it may not have examined.
Manualization
The process of codifying a therapy into a structured, session-by-session treatment manual — originally developed to enable consistent delivery in RCTs. Manualized therapies (CPT, PE, DBT skills groups) are easier to study, train, and implement at scale. The trade-off is that manualization can flatten the relational and improvisational dimensions of therapy. The tension between fidelity to a manual and responsiveness to the individual client is one of the field's enduring debates.
Modality
A distinct approach to psychotherapy with its own theoretical framework, techniques, and training pathway. 'CBT' is a modality; 'being a good listener' is not. Modalities differ from each other along several dimensions: ontology (what they think the self is), epistemology (what they count as evidence), mechanism of change (what they think actually produces healing), and clinical focus (what they pay attention to in session). This site catalogs these differences systematically rather than treating all therapies as interchangeable.
Ontology
The study of what exists — what is real and what kinds of things are real. In therapy, a modality's ontology determines what it treats as fundamental: Is the self a unified agent, a collection of parts, a narrative, a body? CBT assumes a rational agent whose thoughts cause feelings. IFS assumes a multiplicity of sub-personalities. Somatic Experiencing assumes a nervous system that carries unresolved survival responses. These aren't just theoretical preferences — they shape what the therapist pays attention to and what counts as progress.
Phenomenology
A philosophical tradition founded by Edmund Husserl that studies experience as it appears to consciousness, before we impose theories or explanations on it. The core practice is the epoché — suspending assumptions to encounter phenomena freshly. In therapy, phenomenological approaches (Gestalt, existential therapy, Focusing) prioritize the client's lived experience over diagnostic categories or theoretical frameworks. The therapist's job is to help the client describe what they actually experience, not to explain it away.
Reductionism
The tendency to explain complex phenomena by reducing them to simpler components. In therapy, this shows up as the impulse to reduce suffering to a single mechanism: 'it's just cognitive distortions,' 'it's just attachment injury,' 'it's just stored in the body.' Every modality risks its own form of reductionism. Good clinical thinking holds multiple levels of explanation simultaneously — the neurobiological, the psychological, the relational, the cultural, the existential — without collapsing them into each other.
Therapeutic Alliance
The quality of the collaborative relationship between therapist and client — typically defined by Bordin's three components: agreement on goals, agreement on tasks, and the emotional bond between therapist and client. The alliance is the most robust predictor of therapy outcome across all modalities and all diagnoses. This creates an interesting paradox: the thing that matters most in therapy is the hardest to manualize and the least specific to any particular approach.
Tradition
A broad family of modalities sharing philosophical roots, historical lineage, and general orientation. This site organizes modalities into traditions: Psychoanalytic, Humanistic, Existential, Cognitive-Behavioral, Somatic, Trauma-Focused, Family Systems, and others. Traditions aren't rigid categories — many modalities draw from multiple traditions — but they capture real intellectual lineages and clinical sensibilities that shape how practitioners think about human suffering and change.
Transference
Originally Freud's term for the way patients redirect feelings about significant figures onto the analyst. In contemporary use, the broader phenomenon of bringing relational patterns, expectations, and emotional templates from past relationships into present ones — including the therapy relationship. Psychoanalytic and psychodynamic approaches treat transference as the central data of therapy: by examining what the client does with the therapist, early relational patterns become visible and available for reworking. CBT tends to view transference as noise rather than signal.
Window of Tolerance
Dan Siegel's concept for the zone of arousal in which a person can function effectively — processing information, experiencing emotion, and engaging relationally without becoming overwhelmed (hyperarousal) or shutting down (hypoarousal). Trauma narrows the window; therapy aims to gradually widen it. This concept is central to somatic and trauma-focused approaches and informs the clinical judgment about when to process traumatic material and when to resource and stabilize instead.