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Can Hamilton’s rule be violated?
How generally Hamilton’s rule holds is a much debated question. The answer to that question depends on how costs and benefits are defined. When using the regression method to define costs and benefits, there is no scope for violations of Hamilton’s rule.
Matthijs van Veelen
doaj +1 more source
Queller’s separation condition explained and defended [PDF]
The theories of inclusive fitness and multilevel selection provide alternative perspectives on social evolution. The question of whether these perspectives are of equal generality remains a divisive issue.
Birch, Jonathan, Marshall, James A. R.
core +1 more source
The evolution of ageing in cooperative breeders
Cooperatively breeding animals live longer than their solitary counterparts. This has been suggested for birds, mole rats, and social insects. A common explanation for these long lifespans is that cooperative breeding evolves more readily in long‐lived ...
Jan J. Kreider +3 more
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Matrilateral Bias in Human Grandmothering
Children receive more care and resources from their maternal grandmothers than from their paternal grandmothers. This asymmetry is the “matrilateral bias” in grandmaternal investment. Here, we synopsize the evolutionary theories that predict such a bias,
Martin Daly, Gretchen Perry
doaj +1 more source
Psychopathy, adaptation, and disorder [PDF]
In a recent study, we found a negative association between psychopathy and violence against genetic relatives. We interpreted this result as a form of nepotism and argued that it failed to support the hypothesis that psychopathy is a mental disorder ...
Craig eSheriff +5 more
core +2 more sources
During intrasexual competition, individuals of the same sex compete for access to breeding sites and mating partners, often accompanied by aggressive behavior.
Simon Vitt, Jenny Hiller, Timo Thünken
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Variable and changing trajectories in youth athlete development: further verification in advocating a long-term inclusive tracking approach. [PDF]
Athlete development through adolescence can vary greatly because of maturational processes. For example, variation can be observed in anthropometric and fitness measures with later maturing individuals "catching up" their earlier maturing peers at later ...
Abbott +27 more
core +2 more sources
Kin discrimination, negative relatedness, and how to distinguish between selfishness and spite
Spiteful behaviors occur when an actor harms its own fitness to inflict harm on the fitness of others. Several papers have predicted that spite can be favored in sufficiently small populations, even when the harming behavior is directed indiscriminately ...
Matishalin Patel +2 more
doaj +1 more source
Colony size predicts division of labour in Attine ants [PDF]
Division of labour is central to the ecological success of eusocial insects, yet the evolutionary factors driving increases in complexity in division of labour are little known.
Alexander RD +10 more
core +3 more sources
ABSTRACT Purpose Metabolic syndrome (MetS) is a common complication in survivors of childhood acute lymphoblastic and myeloid leukemia (AL), and a major risk factor for premature cardiovascular disease, type‐2‐diabetes, and metabolic dysfunction‐associated steatotic liver disease (MASLD).
Visentin Sandrine +10 more
wiley +1 more source

