@article{samson2026cathemeral,
title={Are humans cathemeral? The diurnal activity model of Homo sapiens challenged},
author={Samson, David R.},
url={https://www.sciencedirect.com/science/article/pii/S0047248426000692},
urldate={2026-08-18},
DOI={10.1016/j.jhevol.2026.103875},
journal={Journal of Human Evolution},
volume={219},
ISSN={0047-2484},
publisher={Elsevier BV},
year={2026},
month={10},
pages={103875},
keywords={Sleep, Human evolution, Circadian rhythm, Diel activity, Primate, Activity pattern},
annote={[**CS1] [**UA]  Quote: "... human sleep is a constellation of unique traits: it is short, highly efficient, strongly circadian, and yet remarkably flexible in timing."},
}