Emotions are not disruptions to rational thought but fundamental biological systems that evolved to guide behavior. They arise from subcortical circuits that evaluate survival relevance and prepare the body for action before conscious awareness begins.

The body's internal signalling system — the sense of the physiological condition of the entire body. Interoception provides the raw data from which the nervous system constructs feelings, drives, and the sense of self.

Early relational experiences create internal working models that shape emotional regulation, relational patterns, and threat responses across the lifespan.

Behavior that reduces distress is reinforced and repeated — even when it causes long-term harm. Organizational learning theory extends this to show how defensive routines become self-sealing systems that resist change.

A therapeutic model proposing that the psyche contains multiple sub-personalities or 'parts' — each with its own perspective, memories, and protective function — organized around a core Self that can lead when accessed.

Early maladaptive schemas — stable, enduring patterns developed in childhood — shape perception, emotion, and behavior across the lifespan. They function as self-perpetuating lenses through which experience is filtered.

The capacity to understand behavior — in oneself and others — in terms of underlying mental states (thoughts, feelings, desires, intentions). Develops through safe relational experiences and breaks down under threat.

Builds tolerance for opposing truths through the dialectical balance of acceptance and change. Originally developed for borderline personality disorder, DBT teaches distress tolerance, emotion regulation, and interpersonal effectiveness.

Cognitive capacity is not fixed — it varies with emotional state, arousal level, and regulatory demands. State-dependent learning, cognitive load, and predictive processing show that what a person can think depends on how their nervous system is currently organized.

Cognition operates through two systems: fast, automatic, intuitive processing (System 1) and slow, deliberate, analytical processing (System 2). TEG-Blue reframes these not as error-prone vs. corrective but as sequential partners.

Infants are born with distinct temperamental patterns — innate behavioral and emotional styles that shape how they engage with the world. These patterns interact with caregiving environments to produce developmental outcomes.

Individual behavior occurs within nested environmental contexts — microsystem, mesosystem, exosystem, macrosystem, chronosystem. Each level shapes and constrains the others, making context inseparable from development.

Emotion regulation is a process, not an outcome. How we respond to emotional signals — through attention, appraisal, and response modulation — shapes both immediate experience and long-term patterns. Positive emotions broaden capacity; threat narrows it.

Stress modifies gene expression across generations through epigenetic mechanisms — reversible changes that don't alter DNA sequence but alter which genes are active. These modifications transmit regulatory patterns from parent to offspring.

Human cognition evolved to solve survival problems that body-level responses alone could not. Emotional and cognitive systems are not opposed — they are sequential adaptations, each solving different classes of threat at different timescales.

Families function as emotional systems where patterns of interaction, alliance, and conflict transmit across generations. Individual symptoms often serve a function within the larger family system.

Humans possess an inherent actualizing tendency — a drive toward growth, authenticity, and self-realization. When conditions of worth are imposed, this tendency is constrained.

An interdisciplinary framework showing how relationships shape brain development and neural integration — the mind emerges from the interaction between neurophysiology and interpersonal experience.

Moral judgments are driven primarily by intuition rather than reasoning. Haidt's social intuitionist model shows that moral reasoning is largely post-hoc justification for gut reactions shaped by culture, emotion, and group identity.

Behavior is organized around two fundamental motivational systems: approach (moving toward rewards, goals, positive outcomes) and avoidance (moving away from threats, punishments, negative outcomes).

Identity is constructed through the stories we tell about ourselves. Coherent narrative is a marker of earned security (Main). Narrative therapy externalizes problems and re-authors identity stories.

Neurodivergence (autism, ADHD, dyslexia, etc.) represents natural human variation in neurological processing. Disability arises from environmental mismatch.

The self develops through early relational experience. When caregiving is 'good enough,' the True Self emerges; when it fails, a False Self forms as protective adaptation.

The autonomic nervous system operates through three hierarchical circuits — ventral vagal, sympathetic, and dorsal vagal — that shape our capacity for social engagement, mobilization, and immobilization.

The psyche contains both conscious and unconscious elements organized around archetypes. The Persona is the social mask we present; the Shadow contains what we reject. Individuation is the lifelong process of integrating these parts into a more complete self.

The mind employs defense mechanisms to manage anxiety arising from internal conflicts and external threats. These defenses operate unconsciously, protecting the ego from overwhelming affect.

The self develops through empathic responsiveness from self-objects — others who provide mirroring, idealization, and twinship functions. Narcissistic injury is not vanity but developmental deficit.

The discomfort experienced when holding contradictory beliefs, values, or attitudes simultaneously — and the motivated reasoning that follows to reduce that discomfort.

The study of how individuals think, feel, and behave in social contexts — including conformity, obedience, group dynamics, and how situational pressures shape behavior.

Societies organize into group-based hierarchies maintained through institutional discrimination, behavioral asymmetry, and legitimizing myths. System justification theory explains why even disadvantaged groups endorse the status quo.

Awareness of mortality creates existential anxiety that humans manage through cultural worldviews and self-esteem. Mortality salience increases conformity, in-group bias, and aggression toward worldview-threatening others.

Power activates approach motivation and reduces inhibition, while subordination activates inhibition and threat monitoring. Social rank functions as a regulatory signal — position in hierarchy directly shapes nervous system state.

People derive self-esteem from group memberships and are motivated to maintain positive distinctiveness for their in-groups. Even minimal group assignment triggers in-group favoritism and out-group derogation.

Intergroup contact reduces prejudice under specific conditions: equal status, common goals, cooperation, and institutional support. Without these conditions, contact can reinforce existing biases.

The study of how social structures, institutions, and cultural norms shape human behavior — including how power, class, and symbolic capital organize collective life.

Small initial advantages compound through preferential attachment and positive feedback loops into large structural inequalities. The Matthew effect ('to those who have, more will be given') is a measurable mechanism in science, economics, and social systems.

Systems of oppression (race, gender, class, disability) interact and compound rather than operating independently. The capability approach measures real freedom to achieve valued functionings, not just formal rights.

The stress response is designed for acute activation — short bursts of mobilization that resolve and restore. When activation becomes chronic, the cumulative physiological cost (allostatic load) damages the systems it was designed to protect.

Trauma is stored in the body, not just the mind. Defensive responses that were interrupted or overwhelmed during threat continue to seek completion, shaping physiology, perception, and behavior long after danger has passed.

Coercive control operates through ongoing patterns of monitoring, isolation, degradation, and enforcement — not isolated incidents. Patterns of intentionality in controlling behavior are recognizable and predictable.

Trauma resolution requires completing interrupted defensive responses at the body level. Change requires bodily experience — the body must complete the threat cycle for the nervous system to update its threat assessment.