Human uniqueness? Life history diversity among small-scale societies and chimpanzees

Background

Humans life histories have been described as “slow”, patterned by slow growth, delayed maturity, and long life span. While it is known that human life history diverged from that of a recent common chimpanzee-human ancestor some ~4–8 mya, it is unclear how selection pressures led to these distinct traits. To provide insight, we compare wild chimpanzees and human subsistence societies in order to identify the age-specific vital rates that best explain fitness variation, selection pressures and species divergence.

Methods

We employ Life Table Response Experiments to quantify vital rate contributions to population growth rate differences. Although widespread in ecology, these methods have not been applied to human populations or to inform differences between humans and chimpanzees. We also estimate correlations between vital rate elasticities and life history traits to investigate differences in selection pressures and test several predictions based on life history theory.

Results

Chimpanzees’ earlier maturity and higher adult mortality drive species differences in population growth, whereas infant mortality and fertility variation explain differences between human populations. Human fitness is decoupled from longevity by postreproductive survival, while chimpanzees forfeit higher potential lifetime fertility due to adult mortality attrition. Infant survival is often lower among humans, but lost fitness is recouped via short birth spacing and high peak fertility, thereby reducing selection on infant survival. Lastly, longevity and delayed maturity reduce selection on child survival, but among humans, recruitment selection is unexpectedly highest in longer-lived populations, which are also faster-growing due to high fertility.

Conclusion

Humans differ from chimpanzees more because of delayed maturity and lower adult mortality than from differences in juvenile mortality or fertility. In both species, high child mortality reflects bet-hedging costs of quality/quantity tradeoffs borne by offspring, with high and variable child mortality likely regulating human population growth over evolutionary history. Positive correlations between survival and fertility among human subsistence populations leads to selection pressures in human subsistence societies that differ from those in modern populations undergoing demographic transition.

Multi-dimensionality and variability in folk classification of stingless bees (Apidae: Meliponini)

BACKGROUND

Not long ago Eugene Hunn suggested using a combination of cognitive, linguistic, ecological and evolutionary theories in order to account for the dynamic character of ethnoecology in the study of folk classification systems. In this way he intended to question certain homogeneity in folk classifications models and deepen in the analysis and interpretation of variability in folk classifications. This paper studies how a rural culturally mixed population of the Atlantic Forest of Misiones (Argentina) classified honey-producing stingless bees according to the linguistic, cognitive and ecological dimensions of folk classification. We also analyze the socio-ecological meaning of binomialization in naming and the meaning of general local variability in the appointment of stingless bees.

METHODS

We used three different approaches: the classical approach developed by Brent Berlin which relies heavily on linguistic criteria, the approach developed by Eleonor Rosch which relies on psychological (cognitive) principles of categorization and finally we have captured the ecological dimension of folk classification in local narratives. For the second approximation, we developed ways of measuring the degree of prototypicality based on a total of 107 comparisons of the type "X is similar to Y" identified in personal narratives.

RESULTS

Various logical and grouping strategies coexist and were identified as: graded of lateral linkage, hierarchical and functional. Similarity judgments among folk taxa resulted in an implicit logic of classification graded according to taxa's prototypicality. While there is a high agreement on naming stingless bees with monomial names, a considerable number of underrepresented binomial names and lack of names were observed. Two possible explanations about reported local naming variability are presented.

CONCLUSIONS

We support the multidimensionality of folk classification systems. This confirms the specificity of local classification systems but also reflects the use of grouping strategies and mechanisms commonly observed in other cultural groups, such as the use of similarity judgments between more or less prototypical organisms. Also we support the idea that alternative naming results from a process of fragmentation of knowledge or incomplete transmission of knowledge. These processes lean on the facts that culturally based knowledge, on the one hand, and biologic knowledge of nature on the other, can be acquired through different learning pathways.

Ethnoecology - The best medicine against allergy?

This essay, which is the 6(th) in the series "Recollections, Reflections, and Revelations: Ethnobiologists and Their First Time in the Field", is a personal reflection by the researcher on his first field experiences with ethnobiology. Author writes on how Hungarian herders in the Hortobágy salt steppes and Csángó people in the Carpathian mountains changed his views on landscape, vegetation, local people, traditional small-scale grassland management and finally, ecology and nature conservation.

Ethnology in the metropole: Robert Knox, Robert Gordon Latham and local sites of observational training

Anthropologists have traditionally separated the history of their discipline into two main diverging methodological paradigms: nineteenth-century armchair theorizing, and twentieth-century field-based research. But this tradition obscures both the complexity of the observational practices of early nineteenth-century researchers and the high degree of continuity between these practices and the techniques that came later. While historians have long since abandoned the notion that nineteenth-century ethnologists and anthropologists were merely 'armchair' theorists, this paper shows that there is still much to learn once one asks more insistently what the observational practices of early researchers were actually like. By way of bringing out this complexity and continuity, this essay re-examines the work of two well-known British ethnologists, Robert Knox, and Robert Gordon Latham; looking in particular at their methods of observing, analysing and representing different racial groups. In the work of each figure, early training in natural history, anatomy and physiology can be seen to have influenced their observational practices when it came to identifying and classifying human varieties. Moreover, in both cases, Knox and Latham developed locally-based observational training sites.

[Informative value of craniometric data for ethno-racial studies]

Skull measurements differ in terms of discriminative and taxonomic value. Facial signs carry much more taxonomic information than neurocranial structures. Differences in the informative value of selected craniological complexes provide a rationale for differential approach to the interpretation of the results of ethno-racial studies.

Fieldwork: man in the system of nature and priority of natural laws in human life

Fieldwork is a branch of inseparable unity of natural and humanitarian sciences; it is aimed at the cultural origin of humanity on the maximum level of its variety. Practically all natural sciences have some space determined by ethnic conscience in nature cognition: ethnodemography, ethnobotany, ethnozoology, etc. Fieldwork guides the research of human culture from the laws of nature. This kind of knowledge is useful to balance human relations with nature and avoid conflicts. Peoples should exchange their wisdom in the dialogue with nature to be more safe. Fieldwork understood as traditional culture only, explaining the variety of ethnoses on our earth, is just the narrow and diachronic level of this branch of knowledge. The cosmological knowledge, where fantasy and not exhausted in its cognition understanding the world of nature are mixed, forms the source of fieldwork and in many respects explains the direction of knowledge: the man finds himself under the open sky, he is the child of nature. Then as time went on there appeared a gradual transition--first nature was creating the man, then by and by he began turning to answer nature by his activity. Nowadays the man is actively creating nature. There are two levels of fieldwork: the ancient one which deals with the origin of ethnoses and the modern one which explores how contemporary life is determined by ethnic specific traits. Fieldwork is the core of multidisciplinary situation in man's knowledge. It is related to such humanitarian sciences: semiotics, culturology, sociology, history, philosophy, literature, linguistics. In the cycle of natural sciences fieldwork stands close to anthropology, geography, biology, demography. Fieldwork as a science has the two main levels--the "sophy" level and the logos "level". The first one discovers wisdom of human life, the second one is aimed at logical structuring of knowledge, here proceed various classifications of peoples.

The value of integrating interpretive research approaches in the exposition of healthcare context

AIM

This paper discusses the use of a nested set of methodologies (dramaturgy, ethno-methodology and ethnography) to characterize and interpret the settings, practices and interactions inherent in the health care environment. The aim is to explain how a set of methodologies can help make sense of research data in the clinical setting.

BACKGROUND

Despite the recognition of the importance of the context of care there has been limited debate about the use and value of research methods and methodologies and how they can be best applied to the health care context.

DISCUSSION

Using dramaturgy the physical and social scene can clearly be established, to enable insight into 'how the scene is contrived'. The ethno-methodological approach assists in the examination of taken-for-granted assumptions inherent in the interactions between individuals in the 'scene', and the underlying 'shared' knowledge within interactions. 'Shared knowledge' identifies knowledge as a medium for communication. The use of ethnography ensures that social and cultural symbols, which are an integral component of how individuals collectively attribute meaning to places and events, become a significant part in the interpretation of interactions.

CONCLUSION

The combination of these methods is advantageous in assisting qualitative researchers in the health care environment to 'make sense' of their complex field notes.

Culture care theory: a major contribution to advance transcultural nursing knowledge and practices

This article is focused on the major features of the Culture Care Diversity and Universality theory as a central contributing theory to advance transcultural nursing knowledge and to use the findings in teaching, research, practice, and consultation. It remains one of the oldest, most holistic, and most comprehensive theories to generate knowledge of diverse and similar cultures worldwide. The theory has been a powerful means to discover largely unknown knowledge in nursing and the health fields. It provides a new mode to assure culturally competent, safe, and congruent transcultural nursing care. The purpose, goal, assumptive premises, ethnonursing research method, criteria, and some findings are highlighted.

Understanding efficacy in psychotherapy: an ethnomethodological perspective on the therapeutic alliance

In recent years there has been considerable interest in the discovery of a universal paradigm to explain how psychotherapy works. One potential paradigm, known as the therapeutic alliance, is highly correlated with positive patient change. However, the phenomenology and clinical significance of the alliance remains ambiguous. Using a sociological subdiscipline known as ethnomethodology, the author advances a novel perspective on the therapeutic alliance that promises to resolve this ambiguity.

Beyond the unobtrusive observer: reflections on researcher-informant relationships in urban ethnography

Ethnographic research involves the creation and ongoing renegotiations of relationships between researchers and informants. Prolonged engagement contributes to the complexity as relationships deepen and shift over time and participants accumulate a substantial reservoir of shared experiences. Reflections about the relationships we have co-constructed with informants in several research projects have contributed to our identification of several critical aspects of building and maintaining researcher-informant relationships in cross-cultural research. Aspects of relationship work specifically related to conducting ethnography with children, within the communities in which researchers live, and within the practice of occupational therapy are discussed.

Studying knowledge, culture, and behavior in applied medical anthropology

In this article we argue that the concept of knowledge, as utilized by public health professionals, is best regarded as cultural belief, as defined in anthropology. The implications of this position are explored, particularly as it relates to the development of a decision-making approach to the understanding and analysis of health care behavior. The methodological challenges posed by the new theoretical perspective that has emerged from the emphasis on decision making is discussed from the perspective of applied research. The role of focused ethnographic studies is examined and contrasted with ethnomedicine and survey approaches. Some main features of focused ethnographic methods are described and illustrated with a case example of acute respiratory infection (ARI) in Gambia.

Eliciting lay beliefs across cultures: principles and methodology

Lay beliefs about illness, its causes and its treatment, do not necessarily concur with medical knowledge, and can sometimes be highly idiosyncratic. These beliefs are likely to be influential in help-seeking, in patients' attitudes to professional help, and in the manner in which patients participate is the management of their illness. Clinicians thus need to understand such lay beliefs and attitudes in order to engage their patients in treatment and to provide optimal care. Lay beliefs are likely to be influenced by the individual's culture and hence also by ethnic group. In attempting to understand the patient's beliefs, the researcher or clinician runs the risk of ethnocentricity-viewing the patient's culture inappropriately from the clinician's own perspective. In some senses, this applies to every clinical encounter-patient and clinician always come from different cultures, in the broad sense. Sensitive clinicians develop expertise at bridging this cultural gap and seeing the patient's problems from the latter's viewpoint. However, more systematic investigation of beliefs and attitudes within a given culture can be pursued using the anthropological technique of ethnography. Ethnographic interviewing can yield qualitative data which can then be taken further in quantitative studies. To minimise the risks of ethnocentricity, it may be appropriate to analyse such data not using customary statistical methods but non-linear multivariate data analysis.

Ethnicity and health beliefs with respect to cancer: a critical review of methodology

This paper considers methodological issues raised by investigations into the relationship between health beliefs with respect to cancer and ethnicity. Because what people will proffer in response to a question about their health beliefs and ethnicity depends amongst other things, on the time and place of asking, and the identity, purpose and methodological approach of the person posing the question, we have focused exclusively on British material; also the practical issues discussed are largely relevant to Britain only.

Reshaping ethnography: contemporary postpositivist possibilities

Following Leinginger's introduction of ethnography into the field of nursing research, numerous descriptive and interpretive studies of health care beliefs and practices have been conducted. The resultant data have been translated into recommendations relative to the areas of nursing education, administration and clinical practice in an effort to ensure that the identified cultural needs are recognized and met. In this paper the discourses that inform such work are explored. Its practices and emergent dilemmas are reassessed in the light of an emerging body of work that challenges its foundational assumptions. Linked under the umbrella of 'postpositivist ethnography', such work recognizes the research area as a social and political field of which the researcher is an integral part. Hence, as an informed subject, the researcher, like the informants, is seen to be implicated in the generation of data. She, or he, is not charged with occupying the opposing roles of objective researcher and subjective participant, nor with reporting 'the truth' as told by informants. This emergent tradition is not without its dilemmas and of particular concern is the issue of authority; that is, whose voice constructs the text? As nursing academics grapple with questions regarding the nature of the knowledge that informs their discipline, it is imperative that they critique potentially fruitful research practices before they appropriate them. Failure to do so may lead them to unwittingly generate knowledge that is inimical to their particular quest. The 'new ethnography' discussed in this paper, offers academics and others interested in the generation of knowledge, not only a methodology that invites the possibility of opening up previously hidden areas of practice, but one that actively involves the researcher in challenging her taken-for-granted assumptions.

The use of ethnographic interviewing to inform questionnaire construction

Many researchers planning a quantitative study begin by conducting qualitative interviews to enhance their understanding of the phenomenon under study and to prepare for constructing a questionnaire. The rich insights that in-depth interviews provide into attitudes, values, and behaviors can be invaluable for survey design and measurement decisions. We incorporated a relatively unusual technique, the ethnographic interview, in developing a survey. In this paper, we describe what an ethnographic interview is, compare it to four other kinds of qualitative interviewing styles, and identify specific ways it can contribute to constructing surveys. We illustrate these points with examples from 10 ethnographic interviews that were conducted for a study of social support among inner-city mothers of children who had chronic illnesses.

Participatory research on workers' health

The concern for workers' health has increased in Latin America during the last decade both on the part of research institutions and trade unions. A special emphasis has been given to active participation of workers not just in the transformation of working conditions to improve health but also in generation of knowledge. This paper presents an action oriented participatory research methodology based on a collective questionnaire that permits the recollection of data on characteristics of the labour process, risks and health damage. A comparison between the information on risks, health damage and the relationship risks-damage obtained with this methodology and those of an individual questionnaire applied at the same steel factory shows that the results produced are very similar. In view of these findings it is concluded that the participatory methodology has some important advantages over traditional methodologies since it provides qualitative information on the labour process, a precise picture of the main risks and how they are produced and semi-quantitative data on health damage, and at the same time, generates a process of consciousness and organization among workers that enables them to promote health oriented action.

Needle sharing in The Netherlands: an ethnographic analysis

BACKGROUND

Needle sharing has been reported to be the main cause of the rapid spread of the human immunodeficiency virus (HIV) among injecting drug users. Risk behaviors such as needle sharing are, however, the end result of complicated interaction patterns in drug user networks, which have their specific rules and rituals, and larger social structures and official drug policy.

METHODS

To study these interaction patterns we examined the drug administration rituals of heroin addicts in Rotterdam, The Netherlands. Intensive ethnographic descriptions were collected by participant observation.

RESULTS

In less than 10% of the observed self-injections unsafe syringes were used. In 68% of the self-injections new, sterile syringes were used. Needle sharing as a planned sequence was not observed. Sharing was determined primarily by the availability of syringes, experience with the injecting ritual, and drug craving. In all observed needle-sharing events, subjects were aware of the risks involved and undertook efforts to clean the injection equipment.

CONCLUSIONS

In contrast to psychological approaches aimed at reducing individual "risk behavior," these findings suggest that HIV prevention can be made more effective if active drug injectors are organized to help themselves and their peers prevent high-risk exchange situations.

Anthropology, occupational therapy, and action research

This paper describes the research process and methodology used in the American Occupational Therapy Association/American Occupational Therapy Foundation Clinical Reasoning Study. This study examined the clinical reasoning of occupational therapists through a 2-year ethnography of therapists at one hospital site. The research was innovative in several important respects. One important innovation was a combined ethnographic and action research design that involved collaboration between the research team and those therapists being studied. Therapists who were research subjects became actively involved in examining and reflecting on their own practice through group analysis of videotaped sessions with clients. One outcome of this action research component was that the study served as both a research and a staff development project.

Qualitative research methodologies: an overview, Part I

In these days of budget constraints and recession, PACU nurses will have to demonstrate that their nursing interventions are economical and effective. Their nursing practice needs to be shaped by scientific knowledge. The purpose of this article is to present an overview of qualitative research methods that can be used by PACU nurses. The methods described and discussed in this article include phenomenology, ethnography, grounded theory, and case studies. Part II of this article, which will be published in a subsequent issue of this journal, will present research problems that are of interest and the ways in which PACU nurses can use the qualitative research designs discussed in part I of the article.

Releasing restraints: providing safe care for the elderly

To examine the behavioral effects of releasing restraints and the feasibility of caring for patients considered at risk if unrestrained, two patients were continuously videotaped using surveillance cameras for 1 week with and 1 week without restraints. The videotapes were coded and analyzed using nonparametric and parametric statistics. In Patient #1, motor behavioral changes with a decrease of restless behaviors, as well as changes in sleeping position, were observed. There were no changes in verbal behavior. For Patient #2, no changes in motor or verbal behavior were observed. Nursing care showed a non-significant decrease in nursing care time and an increase in the number of nursing contacts. The implications of the findings and the use of videotapes as a method for collecting observational data in the clinical area are discussed.

Qualitative research methodologies: an overview

Qualitative approaches are becoming more widely used in nursing research. Though many different qualitative approaches exist, there are similarities in their assumptions, goals and design. Phenomenology, ethnography and grounded theory are inductive methods aimed at describing and explaining human phenomena. These methods offer nurses avenues for understanding human responses to health and illness.

Age structure and sex-biased mortality among Herero pastoralists

Details of the population pyramid of living Herero and Mbanderu of Botswana suggest that infant and childhood mortality of males has been substantially greater than that of females. Direct tests from reproductive histories show that the hazard ratio is approximately 3 to 1 in favor of female survival in infancy and 2 to 1 in childhood. This biased mortality began in about 1960 in concert with recovery from infertility. A model of asymmetric fitness benefits between siblings is weakly supported. Logistic regression shows that heterogeneity among mothers explains much of the mortality of children under 2 years of age. A direct test for heterogeneity provides strong support for the hypothesis. Field methods appropriate for anthropologists are contrasted with those that are standard in demography. Finally, a contrast between these data and those from south Asia suggests that strong sex preferences may exist without being culturally articulated. Cultural norms do not necessarily coincide with behavior.