Robert Trivers
Evolutionary biologist who theorized reciprocal altruism and parental investment.
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via Wikipedia: List of biologists · see source
He was born on February 19, 1943, in Washington, D.C., and died on March 12, 2026, at age 83.[1][2] The Guardian profile notes that Trivers was more interested in human than in animal behavior, unlike other founders of sociobiology.[3]
Life and work
Trivers grew up in a diplomatic household as the son of Howard Trivers, a State Department diplomat who produced denazification regulations.[3] He attended Phillips Academy Andover, where he taught himself calculus in three months at age 14.[3] Trivers had a mental breakdown during his junior year at Harvard, which was first misdiagnosed as schizophrenia.[4][5] He earned his PhD in biology at Harvard from 1968 to 1972, studying with Ernst Mayr and William Drury.[6]
In 1971, while still a graduate student, Trivers published his first major paper, "The evolution of reciprocal altruism," which addressed how cooperation among unrelated individuals could evolve and proposed that natural selection could develop mechanisms to detect cheaters.[7] Trivers served on Harvard's faculty from 1973 to 1978, then was a faculty member at the University of California, Santa Cruz from 1978 until 1994.[1] After meeting Black Panther Party Chairman Huey P. Newton in 1978 when Newton applied for a reading course while incarcerated, Trivers became a party member in 1979.[8] For "his fundamental analysis of social evolution, conflict and cooperation," Trivers received the 2007 Crafoord Prize in Biosciences.[9]
What the cited sources add
The Guardian profile states that Trivers started his theories from observing human behavior and then sought genetic causes applying across the living world.[3] Trivers came up with the notion of reciprocal altruism, where rescuing a drowning swimmer makes sense if the benefit of being saved exceeds the cost.[3] Trivers conceptualized offspring as independent actors, not passive recipients of parental investment, generating the theory of parent-offspring conflict.[5] Trivers told a reporter that he was "one of the greatest social theorists in evolutionary biology alive, period" during the 2014 Rutgers suspension.[10]
According to a Guardian profile, Trivers has resided in Jamaica for approximately 13 years, on and off, and has been married to two Jamaican women.[11]
References
- Wikipedia, "Robert Trivers" (CC BY-SA 4.0), which cites: Brown, "The kindness of strangers", The Guardian, 2005-08-27 (we also read that source) en.wikipedia.org
- Wikipedia, "Robert Trivers" (CC BY-SA 4.0), which cites: Rosenwald, "Robert Trivers, Eccentric Scientist Who Probed Human Nature, Dies at 83", The New York Times, March 27, 2026; "Robert Trivers", John J. Fox Funeral Home Inc (original not read by us) en.wikipedia.org
- Brown, "The kindness of strangers", The Guardian, 2005-08-27. facts only, no text reused. theguardian.com
- Wikipedia, "Robert Trivers" (CC BY-SA 4.0), which cites: "Robert Trivers", John J. Fox Funeral Home Inc; The Kindness of Strangers: Profile, Robert Trivers - The Guardian, 27 August 2025; "Trivers' Pursuit", www.psychologytoday.com; The Kindness of Strangers: Profile, Robert Trivers - The Guardian, 27 August 2025; "Trivers' Pursuit", www.psychologytoday.com (we also read that source) en.wikipedia.org
- "Trivers' Pursuit", www.psychologytoday.com. facts only, no text reused. psychologytoday.com
- Wikipedia, "Robert Trivers" (CC BY-SA 4.0), which cites: Wild Life: Adventures of an Evolutionary Biologist - Robert Trivers, 2015 - ch 3 (original not read by us) en.wikipedia.org
- Wikipedia, "Robert Trivers" (CC BY-SA 4.0), which cites: Bennett, ""The Evolutionary Revolutionary"", Boston Globe, March 27, 2005 (original not read by us) en.wikipedia.org
- Wikipedia, "Robert Trivers" (CC BY-SA 4.0), which cites: "Newton, Huey", African American Registry; Bennett, ""The Evolutionary Revolutionary"", Boston Globe, March 27, 2005; Rosenberg, "Sociobiology Pioneer Joins Black Panthers", The Harvard Crimson, July 6, 1979; Trivers, R.L. & Newton, H.P. Science Digest 'The crash of flight 90: doomed by self-deception?' November 1982, pp 66,67,111.; Wild Life: Adventures of an Evolutionary Biologist - Robert Trivers, 2015. p.161 (original not read by us) en.wikipedia.org
- Wikipedia, "Robert Trivers" (CC BY-SA 4.0), which cites: "The Crafoord Prize in Biosciences 2007", The Crafoord Prize (website), 2007-01-18; "Jamaican-born (sic) scientist gets top award", Jamaica Gleaner, 2007-01-29; Ingram, "Exclusive: Some charities to refuse money from U.S. financier accused in sex case", Reuters, 2015-02-01 (original not read by us) en.wikipedia.org
- Wikipedia, "Robert Trivers" (CC BY-SA 4.0), which cites: Heyboer, "Rutgers suspends top anthropology professor for allegedly refusing to teach, report says", nj.com, February 11, 2014 (original not read by us) en.wikipedia.org
- The Kindness of Strangers: Profile, Robert Trivers - The Guardian, 27 August 2025. facts only, no text reused. theguardian.com
Each numbered sentence above was checked against the source it cites before publication. Sentences citing Wikipedia adapt text from the English Wikipedia article Robert Trivers (contributors), used under CC BY-SA 4.0; this entry is available under the same licence. Other sources were used for facts only; no text or images are copied from them.
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Sources
Compiled from Wikipedia and the sources listed below. Text from Wikipedia is available under CC BY-SA 4.0; this entry is adapted from it.
- Wikipedia: Robert Trivers (CC BY-SA 4.0).
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