 In "The Psychological Foundations of Culture", Tooby and Cosmides critique what they call the 'SSSM', short for 'Standard Social Science Model'.The term refers to a metatheory that the authors claim has dominated the behavioral and social sciences throughout the twentieth century, blending radical environmentalism with blind empiricism.The SSSM has retained and reified the nature/nurture dichotomy, and its practitioners have meticulously amassed evidence over the years which 'proves' that the overwhelming majority of psychological phenomena fall in the 'nurture' category.