Social network theory has the potential to improve our understanding and treatment of human health issues on multiple levels, but we currently lack the basic information on how the spatial and mathematical relations of networks relate to the content and quality of relationships and how such variation influences health outcomes. We propose to determine, using a nonhuman primate, how internal (e.g., personality and temperament, genetic predispositions) and external factors (e.g., environmental and social stressors) in multiple individuals interact to affect network structure and dynamics and how these, in turn, influence health outcomes in social communities. We believe a nonhuman primate model offers several advantages to the advancement of social network theory with regard to human health because monkeys provide a cognitive and social analog for humans, data can be collected by direct observation of multiple communities (providing statistical replication), and the genetic and social history of all individuals is fully known.)We have four specific aims: (1) advance theory and methodologies assessing the network dynamics and robustness at multiple levels pertinent to the health context, (2) characterize how internal and external factors acting on individuals collectively influence network structure and robustness, (3) quantify the influence of network structure and robustness on metrics of stress as health outcomes and (4) assess the effects of experimental perturbation of network composition on network structure and robustness and health outcomes. Three main categories of data will be collected: (1) behavioral observation of affiliative and aggressive interactions, (2) assessment of individual internal factors including biobehavioral assessment of personality/ temperament and genotyping of the 5-HTTPLR and MAO-A genes, and (3) behavioral, physical and physiological measurement of health outcomes, including Rhadinovirus shedding, C-reactive protein levels, attitude, hydration, body condition, and trauma. Each of eight social groups will be observed 78 weeks across two years. Observers will record affiliate, aggressive, and submissive interactions among individuals using an event sampling design. Personality/temperament will be assessed by rating each animal on a list of 50 personality traits. Several health outcomes will be measured daily and during routine roundups. Behavioral data will be used to construct various social networks whose structure, dynamics, and robustness will be measured, and subsequently analyzed with respect to internal factors, health outcomes, and behavioral measures using multi-level generalized linear models.)

Public Health Relevance

This study will advance the current understanding of social network structure and dynamics and develop new network measures and techniques to further understand how social network theory can be successfully applied to the understanding of health outcomes, and ultimately to the improvement of human health.

National Institute of Health (NIH)
Eunice Kennedy Shriver National Institute of Child Health & Human Development (NICHD)
Research Project (R01)
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Special Emphasis Panel (ZRG1-RPHB-L (51))
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Freund, Lisa S
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University of California Davis
Veterinary Sciences
Other Domestic Higher Education
United States
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McCowan, Brenda; Beisner, Brianne; Bliss-Moreau, Eliza et al. (2016) Connections Matter: Social Networks and Lifespan Health in Primate Translational Models. Front Psychol 7:433
Beisner, Brianne A; Jin, Jian; Fushing, Hsieh et al. (2015) Detection of social group instability among captive rhesus macaques using joint network modeling. Curr Zool 61:70-84
Fushing, Hsieh; Jordà, Òscar; Beisner, Brianne et al. (2014) Computing Systemic Risk Using Multiple Behavioral and Keystone Networks: The Emergence of a Crisis in Primate Societies and Banks. Int J Forecast 30:797-806
Beisner, Brianne A; McCowan, Brenda (2014) Signaling context modulates social function of silent bared-teeth displays in rhesus macaques (Macaca mulatta). Am J Primatol 76:111-21
Shev, Aaron; Fujii, Kevin; Hsieh, Fushing et al. (2014) Systemic testing on Bradley-Terry model against nonlinear ranking hierarchy. PLoS One 9:e115367
Chan, Stephanie; Fushing, Hsieh; Beisner, Brianne A et al. (2013) Joint modeling of multiple social networks to elucidate primate social dynamics: I. maximum entropy principle and network-based interactions. PLoS One 8:e51903
Fushing, Hsieh; Wang, Hui; Vanderwaal, Kimberly et al. (2013) Multi-scale clustering by building a robust and self correcting ultrametric topology on data points. PLoS One 8:e56259
Beisner, Brianne A; McCowan, Brenda (2013) Policing in nonhuman primates: partial interventions serve a prosocial conflict management function in rhesus macaques. PLoS One 8:e77369
Shev, Aaron; Hsieh, Fushing; Beisner, Brianne et al. (2012) Using Markov chain Monte Carlo (MCMC) to visualize and test the linearity assumption of the Bradley-Terry class of models. Anim Behav 84:1523-1531
Beisner, B A; Jackson, M E; Cameron, A et al. (2012) Sex Ratio, Conflict Dynamics, and Wounding in Rhesus Macaques (Macaca mulatta). Appl Anim Behav Sci 137:137-147

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