Total strength of support (Σwi) for alternative social learning pathways operating within the experimental groups, contingent on group personality composition. (Undifferentiated social learning refers to a scenario in which social learning rates (s) do not depend on the boldness of either demonstrator or observer (sB→B = sB→S = sS→B = sS→S). Alternately, s may depend on demonstrator boldness, (sB→B = sB→S) ≠ (sS→B = sS→S); observer boldness, (sB→B = sS→B) ≠ (sS→S = sB→S) or the boldness of both demonstrator and observer, sB→B ≠ sS→B ≠ sS→S ≠ sB→S.)