Netzin G. Steklis

Interests

Research

• Human-animal interrelationships• Animal personality & life history• Evolution & biopsychology of human-animal interrelationships• Efficacy of animal assisted therapies

Teaching

• Human-animal interrelationships• Human-animal bond• Captive primate management• Animal ethology • Animal welfare

Courses

Scholarly Contributions

Books

• Steklis, H. D., & Steklis, N. G. (2020). Human and Animal Interrelationships (2nd Edition). Dubuque, Iowa: Kendall-Hunt Publishing Company.
  More info

  This book examines the relationships of humans with animals throughout theages. From our evolutionary past through domestication, the relationships of animals with humans throughout Europe and the New World are chronicled. Modern human-animal relationships will also be examined and analyzed and compared to those of ancient and historical times.Throughout, we take takes a science-based, multi-disciplinary approach to understanding the nature, diversity and functions of human-animal relationships that have developed over time, geographic region, and cultural contexts. This approach puts into fresh perspective many present developments, issues and challenges in the human-animal relationship, including the effectiveness of animal-assisted therapies, animal welfare and rights, animal experimentation, trophy hunting, wildlife management and conservation, and meat production industry.
• Steklis, H. D., & Steklis, N. G. (2020). Human-Animal Interrrelationships (Second Edition). Dubuque, Iowa: Kendall-Hunt Publishing Company.
• Steklis, H. D., & Steklis, N. G. (2016). Human and Animal Interrelationships (1st Edition). Dubuque, Iowa: Kendall-Hunt Publishing Company.
  More info

  This book examines the relationships of humans with animals throughout theages. From our evolutionary past through domestication, the relationships of animals with humans throughout Europe and the New World are chronicled. Modern human-animal relationships will also be examined and analyzed and compared to those of ancient and historical times.Throughout, we take takes a science-based, multi-disciplinary approach to understanding the nature, diversity and functions of human-animal relationships that have developed over time, geographic region, and cultural contexts. This approach puts into fresh perspective many present developments, issues and challenges in the human-animal relationship, including the effectiveness of animal-assisted therapies, animal welfare and rights, animal experimentation, trophy hunting, wildlife management and conservation, and meat production industry.
• Steklis, H. D., & Steklis, N. G. (2014). Men, Fatherhood and Families: A Biocultural Perspective, revised 1st edition. Cognella Academic Publishing.
  More info

  This is an edited work with authors' Introduction. This 1st edition is a revision of the "preliminary edition" published the previous year.

Chapters

• Steklis, H. D., & Steklis, N. G. (2021). An HAI Love Story: A couple collaborates as teachers and researchers exploring our connection to animals. In Career Paths in Human-Animal Interaction for Social and Behavioral Scientists. Routledge.

Journals/Publications

• Steklis, H. D., Steklis, N. G., Peñaherrera-Aguirre, M., & Figueredo, A. J. (2023).

  Human-animal interactions from an evolutionary perspective: Symbioses as extended ultrasociality

  . Human-Animal Interactions. doi:10.1079/hai.2023.0028
• Aragonés, J. I., Araya, S. F., Armenta, M. F., Chaves, M. G., Fernandes, H. B., Figueredo, A. J., Peñaherrera-Aguirre, M., Pérez-Ramos, M., Salmon, C., Sevillano, V., Steklis, N. G., Verdugo, V. C., & de, T. C. (2022).

  The influence of individual differences and local ecological conditions on emotional empathy, cognitive empathy, and harm avoidance towards nonhuman animals

  . Human-Animal Interactions, 2022. doi:10.1079/hai.2022.0021
• Steklis, N. G. (2021). Lower emotional awareness is associated with greater early adversity and faster life history strategy. Evolutionary Behavioral Sciences.
• Smith, R., Steklis, H. D., Steklis, N. G., Weihs, K. L., & Lane, R. D. (2020). The evolution and development of the uniquely human capacity for emotional awareness: A synthesis of comparative anatomical, cognitive, neurocomputational, and evolutionary psychological perspectives. Biological psychology, 154, 107925.
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  We offer an interdisciplinary framework for understanding the expanded capacity for emotional awareness (EA) in humans relative to other animals, synthesizing work within computational neuroscience, evolutionary psychology, and comparative anatomy. We argue that disproportionate cortical expansion during human evolution reflects additional hierarchical levels of computational processing, allowing representation of multimodal regularities over longer timescales - affording abstract concept learning, internal simulation of distal future outcomes, and expanded working memory capacity. This allows for the ability to simulate emotions, learn emotion concepts, and manipulate them in working memory when deciding how to act. We also draw on the construct of life history strategy within evolutionary psychology to argue that individual differences in EA within humans can be understood as the result of tuning particular computational parameters to the predictability of long timescale socioemotional regularities of the local environment. We conclude by discussing the implications and testable hypotheses offered by our proposed framework.
• Cronk, L., Steklis, H. D., Steklis, N. G., van den Akker, O., & Aktipis, A. (2018). Kin terms and fitness interdependence. Evolution and Human Behavior, 40, 218-291. doi:https://doi.org/10.1016/j.evolhumbehav.2018.12.004
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  Although genetic relatedness has been shown to be an important determinant of helping and other forms ofcooperation among kin, it does not correspond well to the different types of kin designated by the kin terminologiesused in human societies. This mismatch between genetic relatedness and kin terms has led someanthropologists to reject the idea that kin terms have anything to do with genetic relatedness or anything elsebiological. The evolutionary and cultural anthropological approaches can be reconciled through an appreciationof the concept of fitness interdependence, defined as the degree to which two or more organisms positively ornegatively influence each other's success in replicating their genes. Fitness interdependence may arise for avariety of reasons, including not only genetic relatedness but also mating and marriage, risk-pooling, mutual aid,and common group membership. The major kin term systems correspond to cross-culturally variable but recurrentpatterns of fitness interdependence among different types of kin. In addition, changes from one kin termsystem to another are associated with corresponding changes in recurrent patterns of fitness interdependenceamong kin, and kin terms are often used metaphorically in situations in which fitness interdependence has arisenamong non-kin.
• Cronk, L., Steklis, H. D., Steklis, N. G., van den Akker, O., & Aktipis, A. (2019). Kin terms and fitness interdependence. Evolution and Human Behavior, 40, 218-291. doi:https://doi.org/10.1016/j.evolhumbehav.2018.12.004
  More info

  Although genetic relatedness has been shown to be an important determinant of helping and other forms of cooperation among kin, it does not correspond well to the different types of kin designated by the kin terminologies used in human societies. This mismatch between genetic relatedness and kin terms has led some anthropologists to reject the idea that kin terms have anything to do with genetic relatedness or anything else biological. The evolutionary and cultural anthropological approaches can be reconciled through an appreciation of the concept of fitness interdependence, defined as the degree to which two or more organisms positively or negatively influence each other's success in replicating their genes. Fitness interdependence may arise for a variety of reasons, including not only genetic relatedness but also mating and marriage, risk-pooling, mutual aid, and common group membership. The major kin term systems correspond to cross-culturally variable but recurrent patterns of fitness interdependence among different types of kin. In addition, changes from one kin term system to another are associated with corresponding changes in recurrent patterns of fitness interdependence among kin, and kin terms are often used metaphorically in situations in which fitness interdependence has arisen among non-kin.
• Kogan, L., Germone, M., Steklis, H. D., Steklis, N. G., LaFollette, M. R., & Erdman, P. (2018). Guide to Human-Animal Interaction Education. Human-Animal Interaction Bulletin, 6, 37-46.
  More info

  Pursuing a career in human-animal interaction (HAI) may feel daunting, as this field is quickly growing and changing, and offers a wide array of career possibilities with pathways and educational programs. Yet, it is this broad scope of possibilities that can make navigating the field challenging. The purpose of this article is to help guide individuals who are interested in exploring a career with animals and humans. Our specific aims are to (a) describe and define the current field of HAI, (b) synthesize possible human-animal studies programs as provided by the Animals and Society website, and (c) offer guidance for those interested in exploring HAI careers. This paper, is designed as a practical guide to help students and their mentors navigate the HAI field.
• Steklis, N. G., Eckardt, W., Fletcher, A. W., Steklis, H. D., Stoinski, T. S., & Weiss, A. (2015).

  Personality dimensions and their behavioral correlates in wild Virunga mountain gorillas (Gorilla beringei beringei).

  . Journal of comparative psychology (Washington, D.C. : 1983), 129(1), 26-41. doi:10.1037/a0038370
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  Studies of animal personality improve our understanding of individual variation in measures of life history and fitness, such as health and reproductive success. Using a 54 trait personality questionnaire developed for studying great apes and other nonhuman primates, we obtained ratings on 116 wild mountain gorillas (Gorilla beringei beringei) monitored by the Dian Fossey Gorilla Fund's Karisoke Research Center in Rwanda. There were 8 raters who each had more than 1.5 years of working experience with the subjects. Principal component analyses identified 4 personality dimensions with high interrater reliabilities-Dominance, Openness, Sociability, and Proto-Agreeableness-that reflected personality features unique to gorillas and personality features shared with other hominoids. We next examined the associations of these dimensions with independently collected behavioral measures derived from long-term records. Predicted correlations were found between the personality dimensions and corresponding behaviors. For example, Dominance, Openness, Sociability, and Proto-Agreeableness were related to gorilla dominance strength, time spent playing, rates of approaches, and rates of interventions in intragroup conflicts, respectively. These findings enrich the comparative-evolutionary study of personality and provide insights into how species differences in personality are related to ecology, social systems, and life history.
• Steklis, H. D., & Steklis, N. G. (2011).

  Graduate Interdisciplinary Programs for Training Students in Human Behavior, Evolution, and Development

  . Human Ethology, 26(1). doi:10.22330/001c.89870
• Bradley, B. J., Robbins, M. M., Williamson, E. A., Steklis, H. D., Steklis, N. G., Eckhardt, N., Boesch, C., & Vigilant, L. (2005).

  Mountain gorilla tug-of-war: silverbacks have limited control over reproduction in multimale groups.

  . Proceedings of the National Academy of Sciences of the United States of America, 102(26), 9418-23. doi:10.1073/pnas.0502019102
  More info

  To determine who fathers the offspring in wild mountain gorilla groups containing more than one adult male silverback, we genotyped nearly one-fourth (n = 92) of the mountain gorillas (Gorilla beringei beringei) living in the Virunga Volcanoes region of Africa. Paternity analysis of 48 offspring born into four groups between 1985 and 1999 revealed that, although all infants were sired by within-group males, the socially dominant silverback did not always monopolize reproduction within his group. Instead, the second-ranking male sired an average of 15% of group offspring. This result, in combination with previous findings that second-ranking males fare best by not leaving the group but by staying and waiting to assume dominance even if no reproduction is possible while waiting, is not consistent with expectations from a reproductive skew model in which the silverback concedes controllable reproduction to the second-ranking male. Instead, the data suggest a "tug-of-war" scenario in which neither the dominant nor the second-ranking male has full control over his relative reproductive share. The two top-ranked males were typically unrelated and this, in combination with the mixed paternity of group offspring, means that multimale gorilla groups do not approximate family groups. Instead, as long-term assemblages of related and unrelated individuals, gorilla groups are similar to chimpanzee groups and so offer interesting possibilities for kin-biased interactions among individuals.

Presentations

• Steklis, H. D., & Steklis, N. G. (2016, June). Animality: How human-animal relationships have changed human nature. Seminar for faculty and students of the Clever Dog Laboratory, Univ. Vienna. University of Vienna, Austria: University of Vienna.
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  Invited presentation.
• Steklis, H. D., & Steklis, N. G. (2016, November). The University of Arizona's Human-Animal Interaction Initiative. Purdue University Centers for the human-animal bond conference. Purdue University, Indiana: Purdue University Centers For the Human-Animal Bond (CHAB).
  More info

  Invited to participate in this two-day conference.
• Steklis, H. D., & Steklis, N. G. (2015, October). Animality and Human-Animal Kinship. Conference on "Kinship, Conflict and Cooperation: Reconceptualizing kinship for the 21st century". Berlin, Germany: Wissenschaftskolleg zu Berlin (WIKO).