S
- Sadist
- Sadness: A Basic Emotion
- Sartre’s Theory of Motivation
- Schachter-Singer Theory of Emotion
- Schema Therapy
- Schizoaffective Disorder
- Schizoid Personality Disorder
- Schizophrenia
- Schizotypal Personality Disorder
- Seasonal Affective Disorder
- Secondary Trauma
- Secure Base
- Securely Attached
- Selective Attention
- Selective Information Processing
- Self-Aspects
- Self-Awareness
- Self-Blame
- Self-Care
- Self-Categorization Theory
- Self Censure
- Self-Completion Theory
- Self Complexity Theory
- Self-Concept
- Self-Consistency Theory
- Self-Defeating Personality Disorder
- Self Determination Theory
- Self-Discipline
- Self-Disclosure Theory
- Self-Discrepancy Theory
- Self-Efficacy
- Self-Esteem
- Self-Handicapping
- Self-Monitoring Theory
- Self Narrative
- Self Organization Psychology
- Self-Perception Theory
- Self-Presentation Theory
- Self Psychology
- Self-Regulation
- Self-Righteousness
- Self Schema
- Self-Serving Bias
- Self-Soothing
- Self-System
- Self-Verification Theory
- Self-Worth Theory
- Semantic Processing
- Sense of Community Theory
- Sensorimotor Development
- Sensorimotor Psychotherapy Interventions
- Sensory Overload
- Sensory Processing Disorder
- Separation-Individuation Theory
- Sharenting
- Shattered Assumptions
- Situated Cognition
- Skeptic
- Slippery Slope Fallacy
- Social-Affective Disorders
- Social Anxiety
- Social Anxiety Disorder
- Social Bond Theory
- Social Capital Theory
- Social Categorization
- Social Clock Theory
- Social-Cognitive Theory
- Social Comparison Theory
- Social Constructionism
- Social Defense Theory
- Social Desirability Bias
- Social Disengagement Theory
- Social Disorganization Theory
- Social Dominance Theory
- Social Exchange Theory
- Social Facilitation Theory
- Social Identity Theory
- Social Investment Theory
- Social Learning Theory
- Social Learning Theory (Criminology)
- Social Neuroscience
- Social Norms
- Social Penetration Theory
- Social Phobia
- Social Psychology
- Social Skills
- Social Stress Theory
- Social Structure Theory
- Social Support Theory
- Social Withdrawal
- Socioemotional Selectivity Theory
- Sociopathy: A Personality Disorder
- Solution-Focused Therapy
- Somatic Awareness
- Somatic Experiencing
- Somatic Intelligence
- Somatic Markers
- Sometimes Opponent Processes Model (SOP)
- Spielrein’s Theory of Destruction
- Spiral of Silence
- Splitting: A Defense Mechanism
- Spotlight Effect
- Stages of Change
- Stanford Prison Experiment
- Startle Response
- Sternberg’s Triarchic Theory of Intelligence
- Sternberg’s Triangle of Love Theory
- Strange Situation
- State Trait Anger Theory
- Still Face Experiment
- Strain Theory
- The Straw Man Fallacy
- Strength-Based Therapy
- Strength Model of Self Control
- Stress and Coping Theory
- Stress Management
- Stress Response Theory
- Structured Decision-Making
- Subculture of Violence Theory
- Subjective Reality: A Cognitive Process
- Subjective Wellbeing
- Sublimation Defense Mechanism
- Substance Use Disorder
- Sunk Costs Fallacy
- Superego
- Superiority Complex
- Supportive Counseling
- Symbolic Interactionism
- Sympathetic Nervous System
- System Justification Theory
- Systems Theory
T
- Tavistock Model
- Tend and Befriend Theory
- Terror Management Theory
- The Progress Principle
- Theory of Mind
- Theory of Planned Behavior
- Theory of Reasoned Action
- Therapeutic Alliance
- Therapeutic Confrontation
- Theory X and Theory Y
- Thomas-Kilmann Conflict Mode Instrument (TKI)
- Thought Disorders
- Time Blindness
- Tolman’s Rat Studies
- Tonkin’s Model of Grief
- Toxic Environments
- Toxic Stress
- Transactional Analysis
- Transactional Relationships
- Translational Neuroscience
- Trauma Bonding
- Trauma Psychotherapy
- Trauma Resiliency Model
- Triandis’s Attitude-Behavior Theory
- Triangle of Love Theory
- Triangulation in Relationships
- Triarchic Theory of Intelligence
- Triggers
- Triune Brain
- Tuckman Model (Group Development Stages)
- Two Factor Theory of Emotion
- Type A Personality
- Type D Personality
U
- Unconditional Love
- Unconditional Positive Regard
- Unconscious Mind
- Undoing Defense Mechanism
- Undoing Effect of Positive Emotions
- Unprocessed Trauma
- Utilitarianism