 Starting from the premise that the human mind has evolved in an adaptive relation to its environment, literary Darwinists undertake to characterize the phenomenal qualities of a literary work (tone, style, theme, and formal organization), locate the work in a cultural context, explain that cultural context as a particular organization of the elements of human nature within a specific set of environmental conditions (including cultural traditions), identify an implied author and an implied reader, examine the responses of actual readers (for instance, other literary critics), describe the socio-cultural, political, and psychological functions the work fulfills, locate those functions in relation to the evolved needs of human nature, and link the work comparatively with other artistic works, using a taxonomy of themes, formal elements, affective elements, and functions derived from a comprehensive model of human nature.Contributors to evolutionary studies in literature have included humanists, biologists, and social scientists.Some of the biologists and social scientists have adopted primarily discursive methods for discussing literary subjects, and some of the humanists have adopted the empirical, quantitative methods typical of research in the sciences.