for creating a false separation between disability and impairment as impairment, not just disability, is socially constructed. This critique draws on feminist arguments that the assertion that sex is biological but gender is social is a false dichotomy because sex is also socially constructed. This is not a rejection of physical reality but draws attention to the social value put on some values, needs and accommodations and the denigration of others. Exclusion of cognitive and mental disabilities There is discourse within disability studies to analyze the construction of mental illness. However, few post-structuralist disability scholars have focused their attention to impairments of the mind. According to Carol Thomas, a Reader in Sociology at the Institute for Health Research, Lancaster University, this may be because disability scholars have in the past considered only the barriers confronted by people with physical disabilities. The experience of impairment, cognitive disability, and mental illness had been absent from the discussion. It is unclear exactly which perspective of disability scholarship "psychological impairment" can fall under, and this has led to a hesitation on the part of scholars. Scholars such as Peter Beresford (2002) suggest "the development of a 'social model of madness and distress which would consider impairments of the mind. Yet others may recommend the "embodied approach" to the study of mental illnesses. With the emergence of Crip theory this hegemony is being challenged. In Feminist, Queer, Crip, Alison Kafer states "My goal is to contextualize, historically and politically, the meanings typically attributed to disability, thereby positioning "disability" as a set of practices and associations that can be critiqued, contested, and transformed." Notable disability studies theorists Peter Beresford Michael Bérubé James Charlton Lennard J. Davis Nirmala Erevelles Vic Finkelstein Rosemarie Garland-Thomson Johanna Hedva Laura Hershey Eva Kittay Simi Linton Mike Oliver Robert McRuer Tom Shakespeare Anne Waldschmidt Irving Zola Marta Russell See also Accessibility Cultural studies Developmental disability Disability and poverty Disability Studies in Education Future planning Inclusion (disability rights) List of disability studies journals Matching person and technology model Special education References Further reading Adams, R., Reiss, B. and Serlin, D., eds. Keywords for Disability Studies. New York University Press, 2015. Albrecht, Gary L., ed. Encyclopedia of Disability (5 vol. Sage, 2005) Barnes, C. and G. Mercer. Exploring disability [2nd edition]. Cambridge, Polity Press, 2010. Bell, Christopher, ed. Blackness and Disability: Critical Examinations and Cultural Interventions (Forecaast Series). LIT Verlag Münster, 2011. Ben-Moshe, L.,