Sociology
86 ideas, each explained on one page with a 60-second lesson you can play right there.
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Asch Conformity Experiment
Solomon Asch tested group conformity using line lengths, finding that a single dissenting voice can drop conformity by 80 percent.
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Attachment Styles
Attachment styles describe patterns infants use to stay close to caregivers, shaping expectations in future relationships.
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Attention Economy
When information becomes abundant, human attention becomes the scarce resource that platforms and advertisers compete to capture.
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Authority bias
Authority bias is the tendency to assume an opinion or order is accurate simply because it comes from an authority figure.
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Averageness
Averageness is the physical beauty that occurs when blending human facial features into a mathematical mean.
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Bandwagon effect
The bandwagon effect is a cognitive bias where people adopt ideas, styles, or actions simply because others are doing it.
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Barnum effect
The Barnum effect explains why people believe vague personality profiles apply uniquely to them, powering astrology and cold reading.
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Barter
Barter is a system of exchange where people trade goods or services directly for other goods or services without using money.
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Behavioral addiction
Behavioral addiction is a compulsion to repeat a rewarding action despite real harm, sharing the same brain adaptations as drug addiction.
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Behavioral Economics
Behavioral economics combines psychology and economics to study how human cognitive limits and biases distort rational decision-making.
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Brainwashing
Brainwashing was coined during the Korean War to explain POW confessions, but scientists and courts found the theory has no scientific merit.
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Burnout (psychology)
Occupational burnout stems from unmanaged workplace stress.
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Bystander Effect
The bystander effect occurs when the presence of other people discourages an individual from intervening in an emergency.
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Codependency
Codependency is a relational pattern where one person enables another's self-destructive behavior through high self-sacrifice and control.
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Cognitive Bias
A cognitive bias is a predictable, systematic pattern where human judgment veers away from objective logic or probability.
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Cognitive Dissonance
Cognitive dissonance is the mental discomfort you feel when you hold conflicting beliefs, or when your actions clash with your values.
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Cold reading
Cold reading uses high-probability guesses and subtle body language cues to make strangers reveal their own details while believing the reader knew them.
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Confirmation Bias
Confirmation bias leads people to seek, interpret, and remember evidence that fits their prior beliefs while ignoring contrary facts.
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Conformity
Conformity is the act of changing your beliefs, attitudes, or behaviors to match the norms of a group.
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Conspicuous consumption
Conspicuous consumption is buying expensive goods or services beyond practical need to publicly display wealth, income, and social status.
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Controlled Substances Act
The Controlled Substances Act established the federal five-tier drug scheduling system and unified US drug regulation under the DEA and FDA.
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DARVO
DARVO stands for Deny, Attack, and Reverse Victim and Offender.
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Doomscrolling
Doomscrolling is the habit of continuously consuming distressing digital content.
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Dunbar's Number
Dunbar's number is the cognitive limit of roughly 150 stable relationships a human can maintain, predicted by neocortex size.
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Echo chamber (media)
An echo chamber is a closed media system where repeated beliefs amplify preexisting views and insulate people from opposing facts.
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Escalation of commitment
Why people double down on failing projects to protect their own past choices, violating standard cost-benefit reasoning.
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Facial Symmetry
Facial symmetry is the structural balance between the left and right sides of a person's face.
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False confession
A false confession is an admission of guilt for a crime that the person did not actually commit.
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Filter Bubble
How algorithms use browsing history, location, and clicks to create personalized web bubbles that isolate users from opposing viewpoints.
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FOMO (Fear Of Missing Out)
FOMO is the anxiety that others are having rewarding experiences without you, intensified by social feeds into constant psychological distress.
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Foot-in-the-door technique
The foot-in-the-door technique wins a big yes by asking a small favor first.
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Friendship
Friendship is a relationship of mutual affection between people that is stronger than an acquaintance or casual association.
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Fundamental attribution error
The fundamental attribution error makes us blame people's character for their actions while ignoring their circumstances.
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Gambling
Gambling is the wagering of money or something else of value on a random event with the intention of winning a prize.
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Game Theory
Game theory uses mathematics to model strategic choices between multiple players whose decisions and payoffs affect each other.
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Gaslighting
Gaslighting is the psychological manipulation of a person into questioning their own perception of reality.
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Great Depression
The Great Depression was a severe global economic downturn lasting from 1929 to 1939.
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Groupthink
Groupthink is a psychological pattern where members of a tight-knit group prioritize getting along over critically testing ideas.
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Habit
A habit is a routine behavior that is repeated regularly and occurs with little to no conscious thought.
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Ikigai
Ikigai is a Japanese concept that refers to a person's reason for living or what makes life feel worth it.
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Illusory truth effect
The illusory truth effect is the cognitive tendency to believe false information is true after hearing it repeated multiple times.
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In-group and out-group
An in-group is any social circle, team, or category you feel you belong to, while an out-group is everyone else.
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Interpersonal ties
Interpersonal ties are the information-carrying connections between individual people in a social network.
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Laziness
Laziness is the emotional reluctance to act or exert effort even when you have the physical or mental capacity to do so.
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Lifestyle creep
Lifestyle creep occurs when higher income leads to higher spending at the same rate, turning optional luxuries into perceived daily necessities.
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Limerence
Limerence is an overwhelming mental state of obsessive infatuation with someone when you do not know if they return your feelings.
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Loneliness
Loneliness is an unpleasant emotional reaction to perceived or actual social isolation.
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Love Bombing
Love bombing is the act of overwhelming someone with intense affection, flattery, and attention to influence them.
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Marshmallow Test The Marshmallow Test is a classic psychology experiment where children choose between one immediate treat or two if they wait alone for 15 minutes.
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Martyr complex
A martyr complex is a behavioral pattern where a person actively seeks out or holds onto suffering instead of solving it.
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Mattachine Society
The Mattachine Society was one of the earliest gay rights organizations in the United States, founded in Los Angeles in 1950.
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Matthew effect
The Matthew effect explains how initial advantages in wealth, fame, or credit snowball over time, concentrating future gains among top performers.
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May 68
How a French student protest against university rules sparked a 10-million-worker general strike that nearly toppled Charles de Gaulle.
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Mere-exposure effect
Repeated exposure makes people prefer words, faces, shapes, and sounds, even without conscious awareness or rational reasons.
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Mihaly Csikszentmihalyi
Hungarian-American psychologist Mihaly Csikszentmihalyi identified flow, the state of deep absorption where challenge matches high skill.
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Milgram Experiment
Stanley Milgram tested obedience to authority, finding 65% of participants willing to administer what they believed were fatal electric shocks.
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Motivation
Motivation is an internal state that drives people and animals to start, continue, or stop a specific behavior.
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Narcissism
Narcissism is a self-centered personality style marked by an excessive preoccupation with oneself and one's own needs, often at the expense of others.
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Nostalgia
Nostalgia is a bittersweet emotional longing for past events, people, or places that cannot be recovered.
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Obedience
Obedience is a form of social influence where a person follows direct orders from an authority figure.
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Online dating
Online dating uses digital profiles to connect romantic partners, revealing stark patterns in how age, race, and education affect attraction.
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Parkinson's law
Parkinson's law states that work expands so as to fill the time available for its completion.
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Physical attractiveness
Physical attractiveness is the degree to which a person's bodily and facial features are seen as aesthetically pleasing or desirable.
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Platonic Relationship
A platonic relationship is an affectionate, non-sexual bond originally conceived by Plato as an ascent toward absolute beauty.
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Problematic smartphone use
Problematic smartphone use describes compulsive phone habits and distress without requiring a formal addiction diagnosis.
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Procrastination
Procrastination is needless delay to dodge a task's bad feelings; the relief keeps it going.
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Proximity principle
The proximity principle explains why people form relationships with those physically nearby due to familiarity and repeated passive contact.
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Psychological Manipulation
Psychological manipulation is underhanded influence used for personal gain at another person's expense, exploiting vulnerabilities and biases.
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Psychology
Psychology is the scientific study of the mind and behavior in both humans and nonhumans.
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QAnon
How an anonymous 4chan poster created QAnon, a far-right conspiracy theory that unified internet falsehoods into real-world action.
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Radicalization
Radicalization is the gradual shift from mainstream views to extreme beliefs, acting as a social trap that can lead to violent action.
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Reciprocity (social psychology)
Reciprocity is the social norm of returning favors and harms in kind.
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Scarcity (social psychology)
Scarcity causes people to place higher value on limited items, driving panic buying, impulse purchases, and biased decisions.
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Self-Control Self-control is the ability to regulate your thoughts, emotions, and behavior when facing immediate temptations and impulses.
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Self-disclosure
Self-disclosure is the communication process where one person shares private information about themselves with another person.
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Self-efficacy
Self-efficacy is an individual's belief in their ability to act in the ways necessary to achieve a specific goal.
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Self-serving bias
Why we attribute our successes to personal skill and blame our failures on outside factors to protect our self-esteem.
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Sexual repression
Sexual repression occurs when internal shame, religious dogmas, or legal mandates prevent people from expressing their sexuality.
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Social Norms
A social norm is a shared standard of acceptable behavior within a group.
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Social proof
Social proof occurs when people copy others to determine correct behavior during uncertain situations, often leading to genuine belief.
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Social Psychology
Learn what social psychology is, how it uses experiments to study group influence and attitudes, and how it differs from sociology.
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Spotlight effect
The spotlight effect causes people to overestimate how much others notice their appearance, mistakes, and nervous feelings.
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Subjective well-being
Subjective well-being measures personal evaluations of life through emotional moods, life satisfaction, and meaning rather than external wealth.
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Tinder (app)
Tinder is a geosocial dating and networking app where people browse nearby profiles by swiping right to like or left to pass.
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Traumatic bonding
Traumatic bonding is a psychological attachment that an abused person develops toward their abuser, not toward other victims.
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Work–life balance
Work–life balance is the equilibrium between a person's job and their personal life, including family, leisure, and health.