On pain experience, multidisciplinary integrationand the level-laden conception of science

Multidisciplinary models aggregating 'lower-level' biological and 'higher-level' psychological and social determinants of a phenomenon raise a puzzle. How is the interaction between the physical, the psychological and the social conceptualized and explained? Using biopsychosocial models of pain as an illustration, I argue that these models are in fact level-neutral compilations of empirical findings about correlated and causally relevant factors, and as such they neither assume, nor entail a conceptual or ontological stratification into levels of description, explanation or reality. If inter-level causation is deemed problematic or if debates about the superiority of a particular level of descrip-tion or explanation arise, these issues are fueled by considerations other than empirical findings.