منابع مشابه
Segmented Sleep in Preindustrial Societies.
I was intrigued to learn of the study conducted of three preindustrial cultures, without access to electric lighting, by a team of researchers led by Dr. Jerome Siegel in an effort to determine how humans slept “before the modern era.” Titled “Natural Sleep and Its Seasonal Variations in Three Pre-industrial Societies,” it appears in the November issue of Current Biology.1 Having written on the...
متن کاملin Preindustrial Societies
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متن کاملRelationship between subsistence and age at weaning in "preindustrial" societies.
Cross-cultural studies have revealed broad quantitative associations between subsistence practice and demographic parameters for preindustrial populations. One explanation is that variationin the availability of suitable weaning foods influenced the frequency and duration of breastfeeding and thus the length of interbirth intervals and the probability of child survival (the "weaning food availa...
متن کامل(Evolutionary) Theories of warfare in preindustrial (foraging) societies.
I present an inventory of theories of war causation (and on the origin of war) in preindustrial (traditional, foraging, 'primitive', hunter-gatherer, band- and tribe-level) societies, with emphasis on the roles of natural selection, sexual selection and kin selection. Also the school of sociocultural evolution is briefly discussed.
متن کاملHuman Behavior: Sleep in Hunter–Gatherer Societies
How much would we sleep if we lived without the pressures and distractions associated with industrialized lifestyles? New research shows that hunter-gatherer societies sleep for 6-7 hours a night--a level similar to industrialized societies.
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ژورنال
عنوان ژورنال: Sleep
سال: 2016
ISSN: 1550-9109,0161-8105
DOI: 10.5665/sleep.5558