STORRE

Background: Being nonheterosexual and noncisgender appears to be more common among autistic people. This intersection of identities is often stigmatized in research and society. However, we know that community involvement can protect against negative mental health outcomes associated with being a minority; researchers found this effect in separate studies examining participation in the autistic and Lesbian, Gay, Bisexual, Trans, Queer, Intersex, Asexual plus other gender and sexual orientatio...

Animal personality can affect individual fitness and population growth. Personality traits of either parent or parents’ combination may facilitate reproduction and offspring survival across species. However, previous studies focused mainly on the role of only one sex, and the link between personality and fitness has not been confirmed in primates. We examined this link in both sexes of captive common marmosets (Callithrix jacchus), a cooperatively breeding primate with extensive paternal care...

It has been suggested that non-human primates can respond to deceased conspecifics in ways that suggest they experience psychological states not unlike humans, some of which could indicate they exhibit a notion of death. Here, we report long- term demographic data from two East African chimpanzee groups. During a combined 40-year observation period, we recorded 191 births of which 68 died in infancy, mostly within the first year. We documented the post-mortem behaviour of the mothers and desc...

Population size has been proposed to promote cumulative culture in humans. Experimental evidence from adult humans suggests that one explanatory mechanism might involve combining beneficial information from multiple models. However, it is possible that such combinatory social learning requires cognitive capacities restricted to adult humans. In our task, children aged 5–10 were exposed to two models who consecutively searched a 3×3 array for rewards. Models revealed different correct and inco...