H Kaplan
Dados Biográficos
| ID | 3668 |
|---|---|
| NOME | H Kaplan |
| PRENOMES | H |
| SOBRENOME | Kaplan |
| ASSINATURA | KAPLAN H |
| AFILIAÇÕES | University of New Mexico |
| ORCID | 0000-0002-7398-7358 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 104 |
| TOTAL DE CITAÇÕES | 1517 |
| TOTAL COMO AUTOR | 104 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 1984 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2026 |
| ÍNDICE H | 20 |
Blood Pressure Changes During Aging and Menopause Among Forager‐Horticulturalists in the Bolivian Amazon
More than the sum of its sexes
"The paper's rough consensus attributes the SDoL to differential variance in food returns across male- and female-typical foraging domains, sourcing this primarily to Bird and Codding (2015) and Kelly's (2013) reframe of the classic 'hunting vs. gathering' axis as 'risky vs. non-risky foraging.' Indeed, the data show that males more often pursue large game and honey, resources that yield higher caloric returns but with high unpredictability, inju…
In Memoriam Jane B. Lancaster (1935–2025), a Pioneer in Anthropology
Object play in Tsimane children
Sex-specific division of labour and the associated use of different subsistence techniques by males (e.g. hunting) and females (e.g. gathering) has played an important role in shaping human societies. Skills needed in adulthood are practiced in play during childhood and object play has been proposed to foster tool-use skills necessary for adult subsistence techniques. Here, we investigated sex differences in the ontogeny of object play in Tsimane…
Cross-cousin marriage among Tsimane forager–horticulturalists during demographic transition and market integration
Although still prevalent in many human societies, the practice of cousin marriage has precipitously declined in populations undergoing rapid demographic and socioeconomic change. However, it is still unclear whether changes in the structure of the marriage pool or changes in the fitness-relevant consequences of cousin marriage more strongly influence the frequency of cousin marriage. Here, we use genealogical data collected by the Tsimane Health …
Cultural transmission vectors of essential knowledge and skills among Tsimane forager-farmers
Humans transmit cultural information to others in a variety of ways that can affect productivity, cultural success, and ultimately fitness. Not all potential transmitters are expected to be equally preferred by learners or equally willing to influence their culture acquisition. Across socioeconomic opportunities and ages in the human life course, costs and benefits to both learners and potential transmitters are expected to vary, affecting rates …
Energetic costs of testosterone in two subsistence populations
OBJECTIVE: Testosterone plays a role in mediating energetic trade-offs between growth, maintenance, and reproduction. Investments in a high testosterone phenotype trade-off against other functions, particularly survival-enhancing immune function and cellular repair; thus only individuals in good condition can maintain both a high testosterone phenotype and somatic maintenance. While these effects are observed in experimental manipulations, they a…
Who helps Tsimane youth
We examine various forms of helping behaviour among Tsimane Amerindians of Bolivia, focusing on the provision of shelter, childcare, food, sickcare, cultural influence and traditional story knowledge. Kin selection theory traditionally explains nepotistic nurturing of youth by closely related kin. However, less attention has been given to understanding the help provided by individuals without close genetic relatedness. To explain who provides var…
The Case of Brazil
This article analyzes the impacts of the COVID-19 pandemic on the lives of the Amazonian populations of Brazil. Following the social quality approach, it inquires into how COVID-19 intertwined with and reinforced underlying trends and inequalities in different life domains expressed in long-term societal complexities, urban–rural dynamics, and environmental transformations. The article finds that the pandemic, following coloniality of power patte…
Gains to cooperation drive the evolution of egalitarianism
Old friends and friendly fire
OBJECTIVES: Despite public health concerns about hookworm infection in pregnancy, little is known about immune profiles associated with hookworm (Necator americanus and Ancylostoma duodenale) infection during pregnancy. Fetal tolerance requirements may constrain maternal immune response to hookworm, thereby increasing susceptibility to new infections or increasing hemoglobin loss. To explore this possibility, we study systemic immune response and…
Relationship of sanitation, water boiling, and mosquito nets to health biomarkers in a rural subsistence population
OBJECTIVES: Throughout human evolutionary history, parasites and pathogens were a major cause of mortality-modern urban life with public health infrastructure has changed disease exposure. We examine associations between boiling water, using latrines, mosquito net usage, and biomarkers among the Tsimane, a nonindustrial subsistence population with little public health infrastructure. METHODS: We conducted cross sectional surveys on water, latrine…
Procurement Technology and Prey Mortality Among Indigenous Neotropical Hunters
This chapter discusses the predatory strategies of bow and arrow hunters with those of neighboring shotgun hunters in some native hunter-horticulturist communities in the lowland tropics of southeastern Peru. It examines how hunting strategies vary between the two technologies with respect to pursuit time and prey selection by species, age and sex. Animals are encountered by sight and/or sound, sometimes flushed by dogs if present, and for some s…
Methodological differences cannot explain associations between health, anthropometrics, and excess resting metabolic rate
"We appreciate Ocobock's interest in methodological rigor. We largely agree with her commentary, which suggests that departures from standard protocols might have contributed to the high resting metabolic rate (RMR) measured for Tsimane. Indeed, our paper acknowledges many of the key departures from gold-standard indirect calorimetry methods of RMR assessment and attempts to adjust for several of these (Gurven et al., 2016). Bringing standard cli…
Sex differences in political leadership in an egalitarian society
Information transmission and the oral tradition
Demographic Transition
The demographic transition is the change from a high‐mortality, high‐fertility population to one with low mortality and low fertility, which tends to accompany industrialization. Evolutionary anthropologists are particularly interested in studying the demographic transition because low fertility levels, as experienced around the world today, appear inconsistent with the expectation of fitness maximization and researchers seek to understand the fa…
Child nutritional status among births exceeding ideal family size in a high fertility population
Ideal family size (IFS) is measured in social surveys to indicate unmet need for contraception and impending shifts in fertility behaviour. Whether exceeding IFS affects parental behaviour in ways that result in lower investments in child nutrition, well-being, and educational attainment is not known. This study examines parental IFS and the association between exceeding stated ideals and child nutritional status in a high-fertility, high-mortali…
Sleep variability and nighttime activity among Tsimane forager‐horticulturalists
OBJECTIVES: A common presumption in sleep research is that "normal" human sleep should show high night-to-night consistency. Yet, intra-individual sleep variation in small-scale subsistence societies has never been studied to test this idea. In this study, we assessed the degree of nightly variation in sleep patterns among Tsimane forager-horticulturalists in Bolivia, and explored possible drivers of the intra-individual variability. METHODS: We …
Low perceived control over health is associated with lower treatment uptake in a high mortality population of Bolivian forager-farmers
Marital violence and fertility in a relatively egalitarian high-fertility population
Experimental tests of the tolerated theft and risk-reduction theories of resource exchange
Why household inefficiency? An experimental approach to assess spousal resource distribution preferences in a subsistence population undergoing socioeconomic change
The Evolutionary Ecology of Food Acquisition
This chapter presents evolutionary models of food acquisition, and discusses examples of the associated empirical research among humans. The principal focus will be upon hunter-gatherers and forager-horticulturalists with little or no market involvement. The chapter examines subsistence decisions, given the technology and resource acquisition abilities of the people in question. It assesses progress toward the complementary goals of explaining ob…
The Tsimane Health and Life History Project
The Tsimane Health and Life History Project, an integrated bio‐behavioral study of the human life course, is designed to test competing hypotheses of human life‐history evolution. One aim is to understand the bidirectional connections between life history and social behavior in a high‐fertility, kin‐based context lacking amenities of modern urban life (e.g. sanitation, banks, electricity). Another aim is to understand how a high pathogen burden i…
Food Sharing Among Ache Foragers
This paper aims to describe and explain aspects of food sharing among Ache hunter-gatherers of eastern Paraguay. Food sharing has been widely held to be a fundamental feature of the hunting and gathering way of life and has been hypothesized to have played a major role in the evolution of language, intelligence, and the sexual division of labor. The very general question that guided the research is: What factors are responsible for the evolution …
Life History Traits in Humans
Life history theory offers evolutionary explanations for the timing of life events, with a particular focus on age-schedules of fertility and mortality and growth. Traditional models examine trade-offs between current and future reproduction and quality versus quantity of offspring. These models can be used to understand questions concerning time of gestation, age of weaning, juvenile mortality profiles, age at maturation, adult body size, fertil…
Evolutionary and Wealth Flows Theories of Fertility
There were 3 study communities: 1) the northern Ache in the subtropical forests of eastern Paraguay. During 2 field sessions 1981-82 and 1984-85 the Ache spent their time on hunting-and-gathering treks foraging and at the mission with 200 inhabitants where they engaged in horticulture fishing hunting and gathering. Reproductive histories of a sample of 174 Ache women indicated total fertility rate of 8.15 prior to contact with the society at larg…
Hunting Ability and Reproductive Success Among Male Ache Foragers
Trade-Offs between female food acquisition and child care among hiwi and ache foragers
Longevity Among Hunter- Gatherers
Post-reproductive longevity is a robust feature of human life and not only a recent phenomenon caused by improvements in sanitation, public health, and medical advances. We argue for an adaptive life span of 68-78 years for modernHomo sapiensbased on our analysis of mortality profiles obtained from small-scale hunter-gatherer and horticultural populations from around the world. We compare patterns of survivorship across the life span, rates of se…
Age-dependency in hunting ability among the Ache of Eastern Paraguay
Leadership in an Egalitarian Society
How long does it take to become a proficient hunter? Implications for the evolution of extended development and long life span
On Why Male Foragers Hunt and Share Food
Food Sharing Among Ache Hunter-Gatherers of Eastern Paraguay
Food Transfers Among Hiwi Foragers of Venezuela
Seasonal variance in the diet of Ache hunter-gatherers in Eastern Paraguay
Domestication Alone Does Not Lead to Inequality
We present empirical measures of wealth inequality and its intergenerational transmission among four horticulturalist populations. Wealth is construed broadly as embodied somatic and neural capital, including body size, fertility and cultural knowledge, material capital such as land and household wealth, and relational capital in the form of coalitional support and field labor. Wealth inequality is moderate for most forms of wealth, and intergene…
Determinants of time allocation across the lifespan
Does observed fertility maximize fitness among New Mexican men
Does Market Integration Buffer Risk, Erode Traditional Sharing Practices and Increase Inequality? A Test among Bolivian Forager-Farmers
A Bioeconomic Approach to Marriage and the Sexual Division of Labor
Children may be viewed as public goods whereby both parents receive equal genetic benefits yet one parent often invests more heavily than the other. We introduce a microeconomic framework for understanding household investment decisions to address questions concerning conflicts of interest over types and amount of work effort among married men and women. Although gains and costs of marriage may not be spread equally among marriage partners, marri…
The goals of direct paternal care among a South Amerindian population
Human males are remarkable among mammals in the level of investment they provide to their wives and children. However, there has been debate as to the degree to which men actually invest and through which fitness pathways the benefits of familial investment are realized. Much of the previous research exploring these issues has focused on men's roles as providers, but few have explored correlates of men's direct parental care. Although this is rea…
How universal is the Big Five? Testing the five-factor model of personality variation among forager–farmers in the Bolivian Amazon
The five-factor model (FFM) of personality variation has been replicated across a range of human societies, suggesting the FFM is a human universal. However, most studies of the FFM have been restricted to literate, urban populations, which are uncharacteristic of the majority of human evolutionary history. We present the first test of the FFM in a largely illiterate, indigenous society. Tsimane forager-horticulturalist men and women of Bolivia (…
From Forest to Reservation
This article presents detailed quantitative descriptions of food distributions among a group of forager-horticulturalists, the Ache of Paraguay. Food transfer patterns for Ache during periods of nomadic foraging are compared with those of Ache living a horticulture-based existence at a permanent settlement. We further explore how characteristics of resources and the methods of production, group size, and the spatial landscape can influence the ki…
Growth references for Tsimane forager‐horticulturalists of the Bolivian Amazon
International references for BMI-for-age and WFH are likely appropriate for Tsimane, but differences in height-for-age and weight-for-age suggest Tsimane specific references may be useful for these measures
Low mineral density of a weight‐bearing bone among adult women in a high fertility population
Evolutionary theories of aging posit that greater reproductive effort causes somatic decline given a fundamental trade‐off between investing energy in reproduction and repair. Few studies in high fertility human populations support this hypothesis, and problems of phenotypic correlation can obscure the expected trade‐off between reproduction and somatic condition. This cross‐sectional study investigates whether greater reproductive effort is asso…
Infant development among the Ache of eastern Paraguay
Skill ontogeny among Tsimane forager‐horticulturalists
OBJECTIVES: We investigate whether age profiles of Tsimane forager-horticulturalists' reported skill development are consistent with predictions derived from life history theory about the timing of productivity and reproduction. Previous studies of forager skill development have often focused on a few abilities (e.g. hunting), and neglected the broad range of skills and services typical of forager economies (e.g. childcare, craft production, musi…
Seasonal variance in the diet of Ache hunter-gatherers in Eastern Paraguay
Food Sharing Among Ache Hunter-Gatherers of Eastern Paraguay
Female subsistence strategies among Ache hunter-gatherers of Eastern Paraguay
Men's time allocation to subsistence work among the Ache of Eastern Paraguay
Food Sharing Among Ache Foragers
This paper aims to describe and explain aspects of food sharing among Ache hunter-gatherers of eastern Paraguay. Food sharing has been widely held to be a fundamental feature of the hunting and gathering way of life and has been hypothesized to have played a major role in the evolution of language, intelligence, and the sexual division of labor. The very general question that guided the research is: What factors are responsible for the evolution …
Hunting Ability and Reproductive Success Among Male Ache Foragers
Student views on nuclear war
Student views on nuclear war. C Theuer, H Kaplan, T Lewis, C Hellings, C Kiefer, and S B HulleyCopyRight https://doi.org/10.2105/AJPH.76.12.1461 Published Online: October 07, 2011
On Hunting Ability, Reproductive Success, and Statistics
Foraging decisions among Aché hunter-gatherers
Ache at the settlement
Human communication and contemporary evolutionary theory
(1987). Human communication and contemporary evolutionary theory. Research on Language and Social Interaction: Vol. 20, Multichannel Communication Codes: Part I, pp. 79-139
Infant development among the Ache of eastern Paraguay
Social/Cultural Anthropology
A Problem of Bias in Scan Sampling
Instantaneous scan sampling is intended to accumulate data sets large enough to allow quantitative assessments of activity budgets. If all subjects are not continuously visible, group activities may be seriously overrepresented in the sample of observations collected by scans. This paper describes the problem and our solution
Trade-Offs between female food acquisition and child care among hiwi and ache foragers
On Why Male Foragers Hunt and Share Food
Evolutionary and Wealth Flows Theories of Fertility
There were 3 study communities: 1) the northern Ache in the subtropical forests of eastern Paraguay. During 2 field sessions 1981-82 and 1984-85 the Ache spent their time on hunting-and-gathering treks foraging and at the mission with 200 inhabitants where they engaged in horticulture fishing hunting and gathering. Reproductive histories of a sample of 174 Ache women indicated total fertility rate of 8.15 prior to contact with the society at larg…
Does observed fertility maximize fitness among New Mexican men
A theory of fertility and parental investment in traditional and modern human societies
This paper has two interrelated goals.The first is to offer a general theory of fertility and parental investment across a broad spectrum of human societies.The second is t o provide a perspective that unifies traditionally separate domains of anthropology.The basic foundation for the analysis is life history theory and evolutionary biological models of optimal fertility regulation.This tradition is combined with human capital theory in economics…
U New Mexico for the Record
Paternal Care by Genetic Fathers and Stepfathers II
Paternal Care by Genetic Fathers and Stepfathers I
Life History Traits in Humans
Life history theory offers evolutionary explanations for the timing of life events, with a particular focus on age-schedules of fertility and mortality and growth. Traditional models examine trade-offs between current and future reproduction and quality versus quantity of offspring. These models can be used to understand questions concerning time of gestation, age of weaning, juvenile mortality profiles, age at maturation, adult body size, fertil…
A theory of human life history evolution
Human life histories, as compared to those of other primates and mammals, have at least four distinctive characteristics: an exceptionally long lifespan, an extended period of juvenile dependence, support of reproduction by older post-reproductive individuals, and male support of reproduction through the provisioning of females and their offspring. Another distinctive feature of our species is a large brain, with its associated psychological attr…
Food Transfers Among Hiwi Foragers of Venezuela
Biology (58 obras) · Demography (44 obras) · Evolutionary Psychology and Human Behavior (44 obras) · Psychology (42 obras) · Sociology (42 obras) · Population (34 obras) · Ecology (29 obras) · Medicine (29 obras) · Evolutionary Game Theory and Cooperation (27 obras) · Geography (26 obras)