So understanding how they and their extinct relatives diversified could open a window on how language itself emerged among small social groups in the distant human past. (sciencemag.org)
Males with large hyoids and deeper roars but more diminutive testes live in small social groups with often only one male dominating a number of females — a «harem» social model. (sciencedaily.com)
Hence, collaborative settings are generally planned to support independent, one - to - one, or small social groupings of three to six students (Lippman, 2013). (teachermagazine.com.au)