An intraspecific appraisal of the social intelligence hypothesis
BJ Ashton, A Thornton… - … Transactions of the …, 2018 - royalsocietypublishing.org
The prevailing hypotheses for the evolution of cognition focus on either the demands
associated with group living (the social intelligence hypothesis (SIH)) or ecological …
associated with group living (the social intelligence hypothesis (SIH)) or ecological …
Interactions with conspecific outsiders as drivers of cognitive evolution
The social intelligence hypothesis (SIH) posits that within-group interactions drive cognitive
evolution, but it has received equivocal support. We argue the SIH overlooks a major …
evolution, but it has received equivocal support. We argue the SIH overlooks a major …
Brain size affects female but not male survival under predation threat
There is remarkable diversity in brain size among vertebrates, but surprisingly little is known
about how ecological species interactions impact the evolution of brain size. Using guppies …
about how ecological species interactions impact the evolution of brain size. Using guppies …
A larger brain confers a benefit in a spatial mate search learning task in male guppies
Brain size varies dramatically among vertebrates, and selection for increased cognitive
abilities is thought to be the key force underlying the evolution of a large brain. Indeed …
abilities is thought to be the key force underlying the evolution of a large brain. Indeed …
Predation pressure shapes brain anatomy in the wild
There is remarkable diversity in brain anatomy among vertebrates and evidence is
accumulating that predatory interactions are crucially important for this diversity. To test this …
accumulating that predatory interactions are crucially important for this diversity. To test this …
Male-biased gene expression resolves sexual conflict through the evolution of sex-specific genetic architecture
Many genes are subject to contradictory selection pressures in males and females, and
balancing selection resulting from sexual conflict has the potential to substantially increase …
balancing selection resulting from sexual conflict has the potential to substantially increase …
Cognitive performance is linked to fitness in a wild primate
C Fichtel, J Henke-von der Malsburg, PM Kappeler - Science Advances, 2023 - science.org
Cognitive performance varies widely across animal species, but the processes underlying
cognitive evolution remain poorly known. For cognitive abilities to evolve, performance must …
cognitive evolution remain poorly known. For cognitive abilities to evolve, performance must …
Comparative support for the expensive tissue hypothesis: big brains are correlated with smaller gut and greater parental investment in Lake Tanganyika cichlids
The brain is one of the most energetically expensive organs in the vertebrate body.
Consequently, the energetic requirements of encephalization are suggested to impose …
Consequently, the energetic requirements of encephalization are suggested to impose …
Artificial selection on relative brain size reveals a positive genetic correlation between brain size and proactive personality in the guppy
A Kotrschal, EJP Lievens, J Dahlbom, A Bundsen… - …, 2014 - academic.oup.com
Animal personalities range from individuals that are shy, cautious, and easily stressed (a
“reactive” personality type) to individuals that are bold, innovative, and quick to learn novel …
“reactive” personality type) to individuals that are bold, innovative, and quick to learn novel …
Seasonality and brain size are negatively associated in frogs: evidence for the expensive brain framework
Y Luo, MJ Zhong, Y Huang, F Li, WB Liao… - Scientific reports, 2017 - nature.com
The challenges of seasonal environments are thought to contribute to brain evolution, but in
which way is debated. According to the Cognitive Buffer Hypothesis (CBH) brain size should …
which way is debated. According to the Cognitive Buffer Hypothesis (CBH) brain size should …