An empirically-based scenario for the evolution of cultural transmission in the human lineage during the last 3.3 million years
Fig 5
Evolution of cultural transmission modes in the social dimension.
Variation through time in the mean value and standard error of scores attributed to the modes of cultural transmission in the social dimension. The social dimension concerns the social “directions” in which information flows, i.e., who learns from whom (see Methods for the definition of transmission modes and labels). Mean values and standard errors are calculated considering all the scores attributed to a transmission mode within each time period (S3 File).