Liverpool Skylilne

Natural Sciences and Psychology

Dr Samuel Roberts

Dr Samuel Roberts

Telephone: 0151 904 6210

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Biography

My research combines theories and methods from evolutionary psychology, social psychology and social network analysis to provide important new insights into the dynamics of social relationships. I also use this research approach to investigate how social relationships may be affected by the use of communication technologies such as Facebook and mobile phones. Another strand of my research focuses on social bonding in non-human primates, examining communication and social networks in both wild and captive chimpanzees.

In terms of educational background, I studied Human Sciences at the University of Oxford before going on to complete an MSc in Evolutionary Psychology at the University of Liverpool. For my PhD I moved to the University of Sussex, where I examined social referencing and visual perspective taking in Barbary macaques and chimpanzees. My postdoctoral research at the University of Oxford focused on the structure and dynamics of social networks in humans. I conducted an 18-month longitudinal study investigating how students’ social networks change during the transition from school to University, using a combination of questionnaire and mobile phone bills to track communication and changes in social relationships over time.

I am module leader for Introduction to Biological and Cognitive Psychology (Level 4). I also teach on the Level 4 modules Research Methods and Statistics, Psychological Themes and Studying Psychology.

Degrees

2004, University of Sussex, UK, PhD: Hiding behaviour and social sensitivity in non-human primates
1999, University of Liverpool, UK, MSc in Evolutionary Psychology
1997, University of Oxford, UK, B.A. in Human Sciences

Publications

Highlighted publications

Roberts SGB, Roberts AI. 2016. Social Brain Hypothesis: Vocal and Gesture Networks of Wild Chimpanzees FRONTIERS IN PSYCHOLOGY, 7 DOI Author Url Public Url

Roberts AI, Roberts SGB. 2016. Wild chimpanzees modify modality of gestures according to the strength of social bonds and personal network size SCIENTIFIC REPORTS, 6 DOI Author Url Public Url

Aledavood T, Lopez E, Roberts SGB, Reed-Tsochas F, Moro E, Dunbar RIM, Saramaki J. 2015. Daily Rhythms in Mobile Telephone Communication PLOS ONE, 10 DOI Author Url Public Url

Saramaki J, Leicht EA, Lopez E, Roberts SGB, Reed-Tsochas F, Dunbar RIM. 2014. Persistence of social signatures in human communication PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 111 :942-947 DOI Author Url Public Url

Roberts AI, Vick S-J, Roberts SGB, Menzel CR. 2014. Chimpanzees modify intentional gestures to coordinate a search for hidden food NATURE COMMUNICATIONS, 5 DOI Author Url Public Url

Vlahovic TA, Roberts S, Dunbar R. 2012. Effects of Duration and Laughter on Subjective Happiness Within Different Modes of Communication JOURNAL OF COMPUTER-MEDIATED COMMUNICATION, 17 :436-450 DOI Author Url

Journal article

Roberts A, Murray L, Roberts S. 2019. Complex sociality of wild chimpanzees can emerge from laterality of manual gestures Human Nature, DOI Author Url Publisher Url Public Url

Roberts AI, Chakrabarti A, Roberts SGB. 2019. Gestural repertoire size is associated with social proximity measures in wild chimpanzees AMERICAN JOURNAL OF PRIMATOLOGY, 81 DOI Author Url Public Url

Roberts AI, Roberts SGB. 2018. Persistence in gestural communication predicts sociality in wild chimpanzees Animal Cognition, DOI Author Url Publisher Url Public Url

Roberts SGB, Roberts AI. 2018. Visual Attention, Indicative Gestures, and Calls Accompanying Gestural Communication Are Associated With Sociality in Wild Chimpanzees (Pan troglodytes schweinfurthii) Journal of Comparative Psychology, DOI Author Url Publisher Url Public Url

Roberts AI, Roberts SGB. 2017. Convergence and divergence in gesture repertoires as an adaptive mechanism for social bonding in primates ROYAL SOCIETY OPEN SCIENCE, 4 DOI Author Url Public Url

Roberts SGB, Roberts AI. 2016. Social Brain Hypothesis: Vocal and Gesture Networks of Wild Chimpanzees FRONTIERS IN PSYCHOLOGY, 7 DOI Author Url Public Url

Roberts AI, Roberts SGB. 2016. Wild chimpanzees modify modality of gestures according to the strength of social bonds and personal network size SCIENTIFIC REPORTS, 6 DOI Author Url Public Url

Molho C, Roberts SGB, de Vries RE, Pollet TV. 2016. The six dimensions of personality (HEXACO) and their associations with network layer size and emotional closeness to network members PERSONALITY AND INDIVIDUAL DIFFERENCES, 99 :144-148 DOI Author Url Public Url

Hooper J, Sharpe D, Roberts SGB. 2016. Are men funnier than women, or do we just think they are? Translational Issues in Psychological Science, 2 :54-62 DOI Public Url

Roberts SBG, Dunbar RIM. 2015. Managing Relationship Decay Network, Gender, and Contextual Effects HUMAN NATURE-AN INTERDISCIPLINARY BIOSOCIAL PERSPECTIVE, 26 :426-450 DOI Author Url Public Url

Roberts AI, Roberts SGB. 2015. Gestural Communication and Mating Tactics in Wild Chimpanzees PLOS ONE, 10 DOI Author Url Public Url

Aledavood T, Lopez E, Roberts SGB, Reed-Tsochas F, Moro E, Dunbar RIM, Saramaki J. 2015. Daily Rhythms in Mobile Telephone Communication PLOS ONE, 10 DOI Author Url Public Url

Roberts AI, Roberts SGB, Vick S-J. 2014. The repertoire and intentionality of gestural communication in wild chimpanzees ANIMAL COGNITION, 17 :317-336 DOI Author Url Public Url

Saramaki J, Leicht EA, Lopez E, Roberts SGB, Reed-Tsochas F, Dunbar RIM. 2014. Persistence of social signatures in human communication PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 111 :942-947 DOI Author Url Public Url

Roberts AI, Vick S-J, Roberts SGB, Menzel CR. 2014. Chimpanzees modify intentional gestures to coordinate a search for hidden food NATURE COMMUNICATIONS, 5 DOI Author Url Public Url

Curry O, Roberts SGB, Dunbar RIM. 2013. Altruism in social networks: Evidence for a 'kinship premium' BRITISH JOURNAL OF PSYCHOLOGY, 104 :283-295 DOI Author Url

Pollet TV, Roberts SGB, Dunbar RIM. 2013. Going That Extra Mile: Individuals Travel Further to Maintain Face-to-Face Contact with Highly Related Kin than with Less Related Kin PLOS ONE, 8 DOI Author Url

Miritello G, Moro E, Lara R, Martinez-Lopez R, Belchamber J, Roberts SGB, Dunbar RIM. 2013. Time as a limited resource: Communication strategy in mobile phone networks SOCIAL NETWORKS, 35 :89-95 DOI Author Url

Roberts AI, Vick S-J, Roberts SGB, Buchanan-Smith HM, Zuberbuehler K. 2012. A structure-based repertoire of manual gestures in wild chimpanzees: statistical analyses of a graded communication system EVOLUTION AND HUMAN BEHAVIOR, 33 :578-589 DOI Author Url

Vlahovic TA, Roberts S, Dunbar R. 2012. Effects of Duration and Laughter on Subjective Happiness Within Different Modes of Communication JOURNAL OF COMPUTER-MEDIATED COMMUNICATION, 17 :436-450 DOI Author Url

Binder JF, Roberts SGB, Sutcliffe AG. 2012. Closeness, loneliness, support: Core ties and significant ties in personal communities SOCIAL NETWORKS, 34 :206-214 DOI Author Url

Roberts SGB, Dunbar RIM. 2011. Communication in social networks: Effects of kinship, network size, and emotional closeness PERSONAL RELATIONSHIPS, 18 :439-452 DOI Author Url

Roberts SGB, Dunbar RIM. 2011. The costs of family and friends: an 18-month longitudinal study of relationship maintenance and decay EVOLUTION AND HUMAN BEHAVIOR, 32 :186-197 DOI Author Url

Pollet TV, Roberts SGB, Dunbar RIM. 2011. Use of Social Network Sites and Instant Messaging Does Not Lead to Increased Offline Social Network Size, or to Emotionally Closer Relationships with Offline Network Members CYBERPSYCHOLOGY BEHAVIOR AND SOCIAL NETWORKING, 14 :253-258 DOI Author Url

Pollet TV, Roberts SGB, Dunbar RIM. 2011. Extraverts Have Larger Social Network Layers But Do Not Feel Emotionally Closer to Individuals at Any Layer JOURNAL OF INDIVIDUAL DIFFERENCES, 32 :161-169 DOI Author Url

Roberts SGB, Dunbar RIM, Pollet TV, Kuppens T. 2009. Exploring variation in active network size: Constraints and ego characteristics SOCIAL NETWORKS, 31 :138-146 DOI Author Url

Roberts SGB, Wilson R, Fedurek P, Dunbar RIM. 2008. Individual differences and personal social network size and structure PERSONALITY AND INDIVIDUAL DIFFERENCES, 44 :954-964 DOI Author Url

Roberts SGB, McComb K, Ruffman T. 2008. An experimental investigation of referential looking in free-ranging Barbary macaques (Macaca sylvanus) JOURNAL OF COMPARATIVE PSYCHOLOGY, 122 :94-99 DOI Author Url

Heydari S, Roberts SG, Dunbar RIM, Saramäki J. Multichannel social signatures and persistent features of ego networks Applied Network Science, 3 DOI Author Url Publisher Url Public Url

Chapters

Roberts SGB, Aledavood T, Lopez E, Reed-Tsochas F, Moro E, Dunbar R, Saramaki J. 2016. Channel-Specific Daily Patterns in Mobile Phone Communication Proceedings of ECCS 2014 European Conference on Complex Systems Springer 9783319292281 DOI

Roberts SGB. 2012. Constraints on Social Networks Social Brain, Distributed Mind 9780197264522 DOI

Roberts SGB, Arrow H, Lehmann J, Dunbar R. Close social relationships: An evolutionary perspective Dunbar R, Gamble C, Gowlett J. Lucy to Language The Benchmark Papers :151-180 Oxford University Press 9780199652594

Conference publication

Lu YE, Roberts S, Lio P, Dunbar R, Crowcroft J. 2009. Size matters: Variation in personal network size, personality and effect on information transmission Proceedings - 12th IEEE International Conference on Computational Science and Engineering, CSE 2009, 4 :188-193 DOI

Lu YE, Roberts S, Cheng TMK, Dunbar R, Lió P, Crowcroft J. 2009. On optimising personal network size to manage information flow International Conference on Information and Knowledge Management, Proceedings, :19-26 DOI