Knowra Human behavioral ecology Human behavioral ecology Human behavioral ecology studies how people adjust behavior to ecological and social conditions, and how those choices affect survival and reproductive success.
Optimal foraging theory : A framework that predicts how foragers choose foods and search strategies to maximize benefits relative to costs. It models how food abundance, travel costs, and risk shape human foraging decisions.
Inclusive fitness : An individual's genetic contribution to future generations through both personal reproduction and effects on relatives' reproduction. It broadens reproductive success to include benefits delivered to genetic relatives.
Hadza : A Tanzanian population whose livelihoods include hunting and gathering in the East African savanna. Hadza foraging studies test predictions about food returns, sharing, and mobility.
Evolutionary psychology : An approach that explains psychological mechanisms as products of natural selection across human evolutionary history. It often emphasizes evolved cognitive mechanisms, while human behavioral ecology models flexible choices in current conditions.
Life history theory : The study of how organisms allocate limited resources among growth, survival, and reproduction over their lifetimes. It explains trade-offs among human growth, reproduction, and parental investment.
Evolutionary fitness : An organism's contribution to future generations through survival and reproduction, measured relative to others. It gives the reproductive-success outcome that behavioral explanations seek to understand.
Ache : An Indigenous people of Paraguay, historically including groups who relied heavily on hunting and gathering. Ache data have informed research on mortality, fertility, and the costs of subsistence.
Cultural ecology : The study of how cultural practices interact with environmental conditions and subsistence. It foregrounds cultural systems and environmental adaptation rather than reproductive fitness as its central outcome.
Parental investment : Resources invested in offspring that increase their chances of survival at a cost to the parent's ability to invest elsewhere. It connects ecological demands to decisions about care, mating, and offspring number.
Phenotypic plasticity : The capacity of one genotype to produce different traits or behaviors in different environments. It describes how behavior can shift with conditions without requiring genetic change.
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