Greed personality trait is associated with behavioral loss aversion via the mediation of the neural loss aversion signal in the medial orbitofrontal cortex.

Two genome sequencing studies show a consistent association between blood mitochondrial DNA copy number (mtDNAcn) and personality traits and provide support for the hypothesis that mtDNAcn may be a biomarker that connects certain personality characteristics with mortality.

The likelihood to perform tool use during foraging is linked to personality traits in ants, suggesting an original interplay between consistent inter-individual variability and division of labor in social species.

Pupillometry tracks individual differences linked with autistic traits independently of illusion susceptibility and perceptual reports.

Among captive chimpanzees, higher agreeableness males and higher openness females survive longer.

Interactions between attention systems and the default mode network are linked to individual differences in trait and state-level experience and cognition.

A laboratory experiment provides the first evidence that framing a sham treatment as personalised to one's genetics and physiology increases its placebo effect on pain.

Individual olfactory-driven behaviors, odor preferences, and olfactory sensitivity have rapidly evolved in blind Mexican cavefish, as a quantitative genetic trait.

Multidimensional analysis of data from high-throughput behavioral assays reveals many independent axes of behavioral variation among inbred animals reared in the same environment.

The subjective time of social interactions reflects one's autistic-like tendency and is critically mediated by oxytocin, indicating that time perception is ingrained with personality traits, which likely have neuroendocrine origins as per previous research.