Sunday, March 25, 2018

Approximately 95% of the potential predictive accuracy attainable for an individual is available within the social ties of that individual only, without requiring the individual's data

Information flow reveals prediction limits in online social activity. James P. Bagrow, Xipei Liu, Lewis Mitchell. arXiv, https://arxiv.org/abs/1708.04575

Abstract: Modern society depends on the flow of information over online social networks, and popular social platforms now generate significant behavioral data. Yet it remains unclear what fundamental limits may exist when using these data to predict the activities and interests of individuals. Here we apply tools from information theory to estimate the predictive information content of the writings of Twitter users and to what extent that information flows between users. Distinct temporal and social effects are visible in the information flow, and these estimates provide a fundamental bound on the predictive accuracy achievable with these data. Due to the social flow of information, we estimate that approximately 95% of the potential predictive accuracy attainable for an individual is available within the social ties of that individual only, without requiring the individual's data.

Chimpanzee and gorilla humor: progressive emergence from origins in the wild to captivity to sign language learning

Chimpanzee and gorilla humor: progressive emergence from origins in the wild to captivity to sign language learning. Paul McGhee. International Journal of Humor Research, https://doi.org/10.1515/humor-2018-0017

Abstract: This article examines available (mainly anecdotal) evidence related to the experience of humor among chimpanzees and gorillas in the wild, in captivity and following systematic sign language training. Humor is defined as one form of symbolic play. Positive evidence of object permanence, cross-modal perception, deferred imitation and deception among chimpanzees and gorillas is used to document their cognitive capacity for humor. Playful teasing is proposed as the primordial form of humor among apes in the wild. This same form of humor is commonly found among signing apes, both in overt behavior and in signed communications. A second form of humor emerges in the context of captivity, consisting of throwing feces at human onlookers—who often respond to this with laughter. This early form of humor shows up in signing apes in the form of calling others “dirty,” a sign associated with feces. The diversity of forms of signing humor shown by apes is linked to McGhee, Paul E. Humor: Its origin and development. San Francisco, CA: W. H. Freeman & Co, McGhee, Paul E. Understanding and promoting the development of children’s humor. Dubuque, IA: Kendall/Hunt. model of humor development.

Keywords: Chimpanzee; coping; gorilla; humor; mischief; play; pretend; scatological; sign language; slapstick; teasing
Caruana, Fausto. "Laughter as a Neurochemical Mechanism Aimed at Reinforcing Social Bonds: Integrating Evidence from Opioidergic Activity and Brain Stimulation." Journal of Neuroscience 37, no. 36 (September 6, 2017): 8581-8582. DOI: 10.1523/JNEUROSCI.1589-17.2017

Manninen, Sandra, Lauri Tuominen, Robin Dunbar, Tomi Karjalainen, Jussi Hirvonen, Eveliina Arponen, Riitta Hari, Iiro P. Jääskeläinen, Mikko Sams, and Lauri Nummenmaa. "Social Laughter Triggers Endogenous Opioid Release in Humans." Journal of Neuroscience (May 23, 2017): 0688-16. DOI: 10.1523/JNEUROSCI.0688-16.2017

O’Nions, Elizabeth, César F. Lima, Sophie K. Scott, Ruth Roberts, Eamon J. McCrory, Essi Viding. "Reduced Laughter Contagion in Boys at Risk for Psychopathy." Current Biology (Published online September 28, 2017) DOI: 10.1016/j.cub.2017.08.062

Davila-Ross, M., Allcock, B., Thomas, C., & Bard, K. A. (2011). Aping expressions? Chimpanzees produce distinct laugh types when responding to laughter of others. Emotion, 11(5), 1013-1020. http://dx.doi.org/10.1037/a0022594

Brian Knutson et al., “Anticipation of play elicits high-frequency ultrasonic vocalizations in young rats”, Journal of Comparative Psychology, 1998

Uwe Jürgens, “Neural pathways underlying vocal control”, Neuroscience & Biobehavioral Reviews, March 2002

Matthew Gervais and David Sloan Wilson, “The evolution and functions of laughter and humor: A synthetic approach”, The Quarterly Review of Biology, December 2005

Carolyn McGettigan et al., “Individual differences in laughter perception reveal roles for mentalizing and sensorimotor systems in the evaluation of emotional authenticity”, Cerebral Cortex, 2013

Uta Frith and Christopher D. Frith, “Development and neurophysiology of mentalizing”, Philosophical Transactions of the Royal Society B, March 2003

Joyce W. Yuan et al., “Physiological down-regulation and positive emotion in marital interaction”, Emotion, August 2010

Sophie Scott et al., “The social life of laughter”, Trends in Cognitive Sciences, December 2014

Julia Vettin and Dietmar Todt, “Laughter in conversation: Features of occurrence and acoustic structure”, Journal of Nonverbal Behavior, June 2004