What does Juneteenth mean in STEMM?

Juneteenth commemorates the freeing of the last large group of enslaved people in 1865 at the end of the American Civil War. We asked several Black scientists what Juneteenth means to them in the context of science, technology, engineering, mathematics, and medicine (STEMM)? Their answers run the emotional gamut.

Theoretical constraints: Science, caretaking, and the creation of normative ideals.

OBJECTIVES: This review explores the dualism in evolutionary anthropology that both acknowledges a broad range of familial caretaking strategies, while also remaining tethered to theories scaffolded around notions of selfish genes that constrain our understanding of who provides adequate kin care. I examine the process of norm creation in the sciences by investigating how theory may limit which data are collected and how those data are interpreted. METHODS: This paper serves as a literature review and critique of prominent biological, evolutionary, and psychological conceptualizations of parental investment and caretaking in humans, and how these studies shape what is considered normal behavior in scientific literature. RESULTS: Quantification, assessment, and theory building in evolutionary anthropology, and an oversampling of WEIRD communities in other disciplines, have limited our understanding of what constitutes both evolutionarily adaptive behaviors, and culturally specific human behaviors. CONCLUSIONS: A synthetic theoretical model of behavioral norms in childrearing must account for an exchange of psycho-social and cultural resources and skills, the transfer of energetic reserves via gestation and lactation, and the indirect benefits of genetic inheritance. The emphasis on tailoring data collection to fit evolutionary theories of the family has limited our ability to understand the diverse proximate mechanisms that humans employ in taking care of kin as biocultural reproducers.

Navigating cross-cultural research: methodological and ethical considerations.

The intensifying pace of research based on cross-cultural studies in the social sciences necessitates a discussion of the unique challenges of multi-sited research. Given an increasing demand for social scientists to expand their data collection beyond WEIRD (Western, educated, industrialized, rich and democratic) populations, there is an urgent need for transdisciplinary conversations on the logistical, scientific and ethical considerations inherent to this type of scholarship. As a group of social scientists engaged in cross-cultural research in psychology and anthropology, we hope to guide prospective cross-cultural researchers through some of the complex scientific and ethical challenges involved in such work: (a) study site selection, (b) community involvement and (c) culturally appropriate research methods. We aim to shed light on some of the difficult ethical quandaries of this type of research. Our recommendation emphasizes a community-centred approach, in which the desires of the community regarding research approach and methodology, community involvement, results communication and distribution, and data sharing are held in the highest regard by the researchers. We argue that such considerations are central to scientific rigour and the foundation of the study of human behaviour.

Residential context, institutional alloparental care, and child growth in Jamaica.

OBJECTIVES: Although children are typically raised in familial care networks, not all children have access to kin. Here, I investigate the growth measures of children living in two different residential contexts in Jamaica: institutional care settings and familial homes. METHODS: This cross-sectional study sampled individuals ranging from 5-18 years old, residing in children's homes (N = 113 participants) and familial homes (N = 103 participants). Anthropometric measurements and interview data were collected from all participants. Height for age z-scores (ZHFA) and weight for age z-scores (ZWFA) were calculated using the 2007 WHO standards. Body fat was estimated from tricep and suprailiac skinfold thickness. Between group comparisons were completed using analysis of covariance (ANCOVA), with age included as a covariate. Significance was accepted at P ≤ 0.05. RESULTS: Context was more predictive of condition among children than adolescents. Both girls and boys ages 5-11 years living with family members had higher mean height and weight for age, and summed skinfold thickness measures, than their peers living in children's homes. Fewer correlations between home setting and growth measurements were found among 12-18 year olds. Notably, although children were randomly assigned to children's homes, boys in a single-sex institution did not differ in growth measurements from boys living with family members. CONCLUSIONS: Younger children who lived with family members had better growth measurements than their peers living in institutional settings. However, improved growth measures for children living in one home were correlated to nonconventional counseling practices, and nutritional policies that mirror some aspects of familial care. Am. J. Hum. Biol. 28:493-502, 2016. © 2015 Wiley Periodicals, Inc.

Survey of academic field experiences (SAFE): trainees report harassment and assault.

Little is known about the climate of the scientific fieldwork setting as it relates to gendered experiences, sexual harassment, and sexual assault. We conducted an internet-based survey of field scientists (N = 666) to characterize these experiences. Codes of conduct and sexual harassment policies were not regularly encountered by respondents, while harassment and assault were commonly experienced by respondents during trainee career stages. Women trainees were the primary targets; their perpetrators were predominantly senior to them professionally within the research team. Male trainees were more often targeted by their peers at the research site. Few respondents were aware of mechanisms to report incidents; most who did report were unsatisfied with the outcome. These findings suggest that policies emphasizing safety, inclusivity, and collegiality have the potential to improve field experiences of a diversity of researchers, especially during early career stages. These include better awareness of mechanisms for direct and oblique reporting of harassment and assault and, the implementation of productive response mechanisms when such behaviors are reported. Principal investigators are particularly well positioned to influence workplace culture at their field sites.

Adult health outcomes and their implications for experiences of childhood nutritional stress in Jamaica.

With insights from the developmental origins of health and disease paradigm (DOHaD), this study explores the impact of childhood nutritional stress on adult health outcomes in Jamaica. Jamaica experienced a lengthy period of political and economic instability beginning in the postcolonial period of the early 1960s. This study tests whether decreased government spending on public resources and limited access to imported food products during the early postcolonial period will be reflected in increased adiposity and body mass index among Jamaican adults. Ethnographic and anthropometric data were collected from individuals born between 1958 and 1988. Variability in health outcomes was assessed using Z-score values for body mass index and summed skinfold thickness measures. Age was employed as both a continuous and categorical independent variable. In partial correlation models controlling for economic status, body mass index values and summed skinfold thickness increased with age. Birth cohort and gender effects were also apparent. Women born between 1959 and 1968 had higher body mass index Z-score values than younger women. Both men and women born between 1959 and 1968 had significantly higher skinfold thickness measures than younger individuals. Individuals born between 1959 and 1968 were children during the immediate postcolonial era in Jamaica. Experiences of nutritional stress during critical developmental periods may have contributed to the observed age-related increases in adipose tissue and body mass index values. This study informs our understanding of the ways that fluctuations in the sociopolitical environment during development can mediate and contribute to poor adult health outcomes.

Parasitic infection and the polarized Th2 immune response can alter a vaccine-induced immune response.

The AIDS epidemic in the Developing World represents a major global crisis. It is imperative that we develop an effective vaccine. Vaccines are economically the most efficient means of controlling viral infections. However, the development of a vaccine against HIV-1 has been a formidable task, and in developing countries chronic parasitic infection adds another level of complexity to AIDS vaccine development. Helminthic and protozoan infections, common in developing countries, can result in a constant state of immune activation that is characterized by a dominant Th2 type of cytokine profile, high IgE levels, and eosinophilia. Such an immune profile may have an adverse impact on the efficacy of vaccines, in particular, an HIV-1 vaccine. Indeed, the CD8 cellular immune response and the corresponding Th1 type cytokines that enhance the CD8 cellular immune response are important for clearing many viral infections. It is believed that an antigen specific CD8 cellular immune response will be an important component of an HIV-1 vaccine.