Collective benefit overview.

<p>The collective benefit is plotted as a function of similarity, separately for dyads ((a) Target present; (b) Target absent) and triads ((c) Target present; (d) Target absent). For the ordinate, a value above one indicates a collective benefit. For the abscissa, the closer the value is to one, the higher the similarity. Note, for panels (c) and (d), the light gray points indicate comparisons between the triad performance and the best individual performance in a triad.</p>