All Stories

  1. The cost of deep sleep: Environmental influences on sleep regulation are greater for diurnal lemurs

    Article • American Journal of Physical Anthropology, July 2018, Wiley

    Dr David Ryan Samson

  2. Sleep in a comparative context: Investigating how human sleep differs from sleep in other primates

    Article • American Journal of Physical Anthropology, February 2018, Wiley

    Dr David Ryan Samson

  3. The evolution of human sleep: Technological and cultural innovation associated with sleep-wake regulation among Hadza hunter-gatherers

    Article • Journal of Human Evolution, December 2017, Elsevier

    Dr David Ryan Samson

  4. Chronotype variation drives night-time sentinel-like behaviour in hunter–gatherers

    Article • Proceedings of the Royal Society B Biological Sciences, July 2017, Royal Society Publishing

    Dr David Ryan Samson

  5. Segmented sleep in a nonelectric, small-scale agricultural society in Madagascar

    Article • American Journal of Human Biology, February 2017, Wiley

    Dr David Ryan Samson

  6. Hadza sleep biology: Evidence for flexible sleep-wake patterns in hunter-gatherers

    Article • American Journal of Physical Anthropology, January 2017, Wiley

    Dr David Ryan Samson

  7. What is segmented sleep? Actigraphy field validation for daytime sleep and nighttime wake

    Article • Sleep Health, December 2016, Elsevier

    Dr David Ryan Samson

  8. Sleep intensity and the evolution of human cognition

    Article • Evolutionary Anthropology Issues News and Reviews, November 2015, Wiley

    Dr David Ryan Samson

  9. Orangutans (Pongo spp.) have deeper, more efficient sleep than baboons (Papio papio) in captivity

    Article • American Journal of Physical Anthropology, March 2015, Wiley

    Dr David Ryan Samson

  10. Pre-Sleep and Sleeping Platform Construction Behavior in Captive Orangutans (Pongo spp.): Implications for Ape Health and Welfare

    Article • Folia Primatologica, January 2015, Brill

    Dr David Ryan Samson

  11. Orangutan Night-Time Long Call Behavior: Sleep Quality Costs Associated with Vocalizations in CaptivePongo

    Article • Advances in Zoology, January 2014, Hindawi Publishing Corporation

    Dr David Ryan Samson

  12. Documenting orang-utan sleep architecture: sleeping platform complexity increases sleep quality in captive Pongo

    Article • Behaviour, January 2013, Brill

    Dr David Ryan Samson

  13. Do chimpanzees (Pan troglodytes schweinfurthii) exhibit sleep related behaviors that minimize exposure to parasitic arthropods? A preliminary report on the possible anti-vector function of chimpanzee sleeping platforms

    Article • Primates, September 2012, Springer Science + Business Media

    Dr David Ryan Samson

  14. The chimpanzee nest quantified: morphology and ecology of arboreal sleeping platforms within the dry habitat site of Toro-Semliki Wildlife Reserve, Uganda

    Article • Primates, May 2012, Springer Science + Business Media

    Dr David Ryan Samson

  15. A Thermodynamic Comparison of Arboreal and Terrestrial Sleeping Sites for Dry-Habitat Chimpanzees (Pan troglodytes schweinfurthii) at the Toro-Semliki Wildlife Reserve, Uganda

    Article • American Journal of Primatology, May 2012, Wiley

    Dr David Ryan Samson

  16. In the Eye of the Beholder: Sex and Race Estimation using the Human Orbital Aperture*

    Article • Journal of Forensic Sciences, November 2011, Wiley

    Dr David Ryan Samson