Psychology

Learning

Learning: processes, types, development, and biological basis

Logorrhea

Loneliness

Long-term memory

Lucid dream

Lucid dreaming

Lüscher color test

Madness

Madness (Insanity): meanings, symptoms, history and legal/social aspects

Magical thinking

Magical thinking: beliefs, examples, psychology, and cultural roles

Mania

Marvin Zuckerman

Marvin Zuckerman: Psychologist of Sensation Seeking and Psychobiological Personality

Maslow's hierarchy of needs

Masochism

Mass hysteria

Mass hysteria (mass psychogenic illness): causes, history, and responses

Masturbation

Maternal bond

May-Britt Moser

May-Britt Moser — Norwegian psychologist and neuroscientist

Meditation

Megalomania

Megalomania: definition, traits, history and clinical context

Melancholia

Melancholia: clinical definition, history, and distinctions

Melancholy

Melanie Klein

Melanie Klein (1882–1960)

Mental breakdown

Mental breakdown (nervous breakdown): overview, symptoms, causes, and help

Mental confusion

Mental illness

Mental disorders: causes, diagnosis, treatment, and impact on daily functioning

Mental state

Mental state examination

Mental State Examination (MSE): purpose, components, and clinical use

Michael Persinger

Michael A. Persinger

Milgram experiment

Mind

Mind control

Mind control (brainwashing and coercive persuasion)

Mindset

Mindset: concept, types, effects, and how to change it

Misandry

Mood

Mood: definition, causes, duration, and clinical significance

Mood swing

Moral reasoning

Moral reasoning: how people make judgments about right and wrong

Motivation

Münchausen syndrome

Münchausen syndrome (factitious disorder): overview, causes, and treatment

Myers-Briggs Type Indicator

Narcissism

Narcissistic personality disorder

Necrophilia

Neurodiversity

Neurodiversity: understanding natural variation in human brains

Neuropsychology

Neuropsychology: the study of brain, behavior and cognition

Neurosis

Neurosis: concept, history, symptoms, and modern classification

Night terror

Nightmare disorder

Nightmare disorder: causes, symptoms, diagnosis, and treatment

Observer effect

Observer effect: measurement disturbance and observer bias

Obsessive-compulsive personality disorder

Obsessive–compulsive personality disorder