What characteristics are most heavily weighted in choosing work partners?

These are some of the characteristics that are most heavily weighted in choosing work partners, according to the article "Competent J.erks, Lovable Fools:"
1. People choose work partners who are more likable
2. Studies done in four very different organizations consistently showed that most people would choose a “lovable fool” over a “competent j.erk”
3. Characteristics of competence and likeability

During the paleolithic, hominins grouped together in small societies such as bands, and subsisted by gathering  plants  and fishing, hunting or scavenging wild  animals. the paleolithic is characterized by the use of knapped stone tools, although at the time humans also used  wood  and bone tools.