Fundamental, Quantitative Traits of the “Sociotype”

Pedro C. Marijuán, Raquel del Moral, Sungchul Ji, Marta Gil Lacruz, Juan David Gómez-Quintero, Jorge Navarro

Research output: Contribution to journalArticle

1 Scopus citations


In whatever domain of life, from cells to organisms to societies, communicative exchanges underlie the formation and maintenance, and decay, of the emerging collective structures. It can be clearly seen in the human social world. The different classes of social bonds in a complex society revolve around, and are intimately related with, the communicative relationships that every individual entertains—essentially via face-to-face conversation. In the present work we have investigated the fundamental metrics of both social bonds and communicative exchanges along the development of the “sociotype” construct. It is a new approach developed by the authors within the genotype-phenotype-sociotype conceptual triad. The sociotype means the relative constancy, or better the similar fabric, of the social world in which each individual life is developed. In order to ascertain the metrics of the fundamental quantitative traits inherent in the sociotype, a fieldwork involving a total of 1475 individuals (68.59% female, and 49.79 mean age, SD = 21.47) was carried out. The four relational realms of family, friends, work/study, and acquaintances were investigated. The overall results about conversation time (an average of 220 min/day), and about the number of social bonds (an average of 98), differ from previous assumptions, such as Dunbar's number or Killworth's number. Other results about gender, age, and use of social media and Internet contribute to highlight significant differences among the different social segments, and particularly the diminished “sociotype” of the elderly. Finally, it is curious that a non-Gaussian distribution has been obtained for the specific population allotment of these metrics, and intriguingly the Planckian distribution equation (PDE) appears to be a most cogent fit.

Original languageEnglish (US)
Pages (from-to)79-87
Number of pages9
StatePublished - Jun 2019

All Science Journal Classification (ASJC) codes

  • Applied Mathematics
  • Biochemistry, Genetics and Molecular Biology(all)
  • Statistics and Probability
  • Modeling and Simulation


  • Attention economy
  • Conversation time
  • Number of contacts
  • Planckian distribution equation (PDE)
  • Social networks
  • Sociotype

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    Marijuán, P. C., del Moral, R., Ji, S., Gil Lacruz, M., Gómez-Quintero, J. D., & Navarro, J. (2019). Fundamental, Quantitative Traits of the “Sociotype”. BioSystems, 180, 79-87.