6,078 articles
Flapper
Flapper: young women of the 1920s in America and Britain, also called the New Woman or garconne, defined by bobbed hair, short beaded dresses, jazz-age freedom, and the 1929 crash that ended the era.
Flash mob
A flash mob, or flashmobbing, is a group that assembles suddenly in a public place, performs a brief act, then disperses, organized via email or social media since 2003.
Flashback (psychology)
Flashback (psychology): involuntary, vivid re-experiencing of a past event with a here-and-now quality, a hallmark PTSD intrusion symptom; term coined by Mardi Horowitz around 1970 for post-psychedelic images, entering PTSD criteria in DSM-III-R (1987).
Flashcard
Flashcard: a prompt-and-answer study card used for retrieval practice and spaced repetition. Paper cards spread from the 1800s; apps like Anki and Quizlet automate scheduling, with meta-analyses showing moderate learning gains.
Flemish people
Flemish people (Vlamingen) are the Dutch-speaking inhabitants of Flanders, Belgium, including Dutch speakers of Brussels. They speak Belgian Dutch with four dialect areas, shaped by the Flemish Movement, the 1898 Equality Law, and hyperstandardization on the Netherlandic Dutch norm.
Flight and expulsion of Germans (1944–1950)
Flight and expulsion of Germans (1944–1950), the Vertreibung: mass movement of Reichsdeutsche and Volksdeutsche from Central and Eastern Europe into occupied Germany under the Potsdam transfer clause, integrated in the West via the 1952 equalization-of-burdens law.
Flight shame
Flight shame (Swedish flygskam) is guilt or public shaming about flying's climate impact. It emerged in Sweden in 2016-2017 around Greta Thunberg and other figures who quit flying, with measurable Swedish travel drops, changing aviation social norms, and limited behavior change elsewhere.
Flint water crisis
Flint water crisis: 2014–2015 drinking water lead contamination in Flint, Michigan after the Flint River switch without corrosion control, exposing about 99,000 residents, prompting the $600 million state settlement, criminal cases, and lead pipe replacement.
Flirting
Flirting is playful, deliberately ambiguous verbal and nonverbal communication used to signal or probe romantic or sexual interest. Covers detection accuracy, gender differences, context effects, and AI-assisted digital flirting.
Flirty Fishing
Flirty Fishing (FFing) was a 1974–1987 evangelism practice of David Berg's Children of God, in which female members used romantic and sexual attraction, including sex, to recruit male converts and supporters; banned in 1987.
Florence Tullis
Florence "Rusty" Tullis, also known as Rusty Dennis, was the California mother of Rocky Dennis, who had craniodiaphyseal dysplasia, and was portrayed by Cher in the 1985 film Mask; she died in 2006 at 70 after a motorcycle accident.
Florida Parental Rights in Education Act
The Florida Parental Rights in Education Act, HB 1557 (2022), nicknamed 'Don't Say Gay', restricts classroom instruction on sexual orientation and gender identity, originally K-3, expanded to grade 8 in 2023, with parental notification and lawsuit enforcement; settled litigation left it in effect.
Flow (psychology)
Flow (psychology): optimal experience, flow state, introduced by Mihaly Csikszentmihalyi in 1975; a state of full absorption when challenge and skill balance, measured by the Flow State Scale and Flow Short Scale.
Flower power
Flower power: slogan of the 1960s hippie or flower children counterculture, advocating peace, love, and passive resistance; often attributed to Allen Ginsberg's 1965 essay, known for flowers in gun barrels at the 1967 Pentagon march.
Fluid and crystallized intelligence
Fluid and crystallized intelligence (Gf, Gc) are Cattell's two broad cognitive abilities: novel-problem reasoning versus accumulated knowledge, both strata of the CHC model, with opposite aging trajectories and distinct genetic correlates.
Flynn effect
The Flynn effect is the generational rise in IQ test scores of roughly three points per decade, documented by James R. Flynn in 1984; gains are not on g and have reversed in some Western countries since the mid-1970s peak.
FM-2030
FM-2030 (Fereidoun M. Esfandiary, فریدون اسفندیاری), Iranian-American futurist (1930–2000) who defined the transhuman as a transitional human, wrote Are You a Transhuman? (1989), and was cryopreserved at Alcor.
Focused ethnography
Focused ethnography is a qualitative research method studying a specific practice or problem through short, intensive field visits and recordings, used widely in nursing and health research.
Folsom Street Fair
Folsom Street Fair is an annual adult leather, kink, and fetish street festival in San Francisco's SoMa, held the last Sunday of September since 1984, when it was founded as Megahood by Kathleen Connell and Michael Valerio as an anti-gentrification organizing tool; it is the world's largest leather event.
Fon people
Fon people, also called Dahomeans, a Gbe people of southern Benin and Togo; founders and core of the Kingdom of Dahomey (1625-1894), speakers of Fongbe, practitioners of Vodun, and Benin's largest ethnic group.
Foot fetishism
Foot fetishism, also called foot worship or podophilia, is a sexual interest focused on feet, one of the most common fetishes directed at a non-genital body part.
Footman
Footman: a liveried male domestic servant of grand British and European households, serving at table, at the door, and behind the family carriage; known for elaborate livery, wages of about £17–21 around 1829, and survival in the Royal Household.
Foraging task (behavioral neuroscience)
A foraging task is a behavioral neuroscience paradigm in which a participant repeatedly decides whether to stay with a depleting resource patch or leave it for a new one.
Forbes 30 Under 30
Forbes 30 Under 30, also styled Forbes Under 30, is Forbes magazine's annual list of 600 US honorees under 30 across 20 categories, launched in 2011 by Randall Lane, with regional Asia and Europe editions, judge-based selection, and notable alumni and fraud controversies.
Forbidden knowledge
Forbidden knowledge: knowledge considered too sensitive, dangerous, or taboo to produce, a concept in sociology of science from Kempner, Merz, and Bosk's 2011 interview study, related to agnotology and undone science.
Forced assimilation
Forced assimilation is coerced absorption of minorities into a dominant culture, chiefly via boarding and residential schools. Key cases: US Indian boarding schools (1819-1969, 417 schools), Canadian residential schools, and China's Tibetan schooling policies.
Forced displacement in Colombia
Forced displacement in Colombia, known in Spanish as desplazamiento forzado, is the forced internal migration driven by armed conflict, with over 9 million registered victims since 1985.
Forced marriage
Forced marriage: a marriage without full, free, informed consent of one or both spouses, secured by violence, threats, deception or financial pressure. Covers UN definitions, UK law (ASBCPA 2014, minimum age 18), SDG 5.3, and interventions.
Foreign-born population of the United Kingdom
Foreign-born population of the United Kingdom: residents born outside the UK, also called the non-UK born population. Estimated 13.12 million (19%) in 2024; top 2021 countries of birth India, Poland, Pakistan, Romania, Ireland.
Forensic psychology
Forensic psychology is the application of psychology to law and legal systems, recognized as an APA specialty in 2001, centered on psychological assessment of people involved with the legal system.