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among the first theorists in his field to use general systems theory and later dynamical systems theory to describe the complexities of his model, which described the iterative, interactive relationships between a person's volition, habituation (roles and habits), performance capacity, and the social and physical environment. He was also the first theorist to clearly explain the importance and relevance of the temporal dimension to occupational therapy practice. Kielhofner's work is widely cited and his model stands among the most influential theoretical contributions in the history of occupational therapy.
92:, (UIC) where he remained until his death in 2010. At UIC, Kielhofner continued the development of his theory, publishing numerous articles that explicated various components of the model. He enjoyed mentoring and was influential in launching the successful careers of many students who have contributed their own scholarship in the social sciences. As recognition of his model grew, he accepted invitations to lecture and teach at several international locations where his work was influential in guiding practice, most notably in Stockholm, Sweden at the
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Ireland, Italy, France, Germany, Spain, Portugal, Japan, Hong Kong, Israel, and
Central and South America. An active network of proponents across the international occupational therapy community continues to study and evolve his model through the MOHO Clearinghouse maintained at the University of Illinois at Chicago (UIC).
104:, which later inducted him into its Academy of Research. Shortly before his death, he began an international symposium that continues and started a clearinghouse of articles and publications at the University of Illinois at Chicago. In recognition of his work, Kielhofner received honorary doctorates from the
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Kielhofner's main theoretical contribution was his idea that a complete understanding of the complex manner through which human occupation is initiated, pursued and completed necessarily requires systems approaches that rely upon research in the biological, psychological and social sciences. He was
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and its consequences and influences from a health perspective, publishing four articles that articulated his theory. These articles attempted to draw from and apply leading ideas from the social sciences into a complex understanding of humans as beings with an intrinsic need to act competently and
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by
Kielhofner and others but later extensively developed over Kielhofner's career and disseminated in numerous books and articles. Kielhofner lectured widely and consulted regularly in the United States and abroad, particularly throughout Scandinavia, the United Kingdom, (including Scotland),
88:(VCU). While at VCU, he began earnestly to further develop and explain his Model of Human Occupation, which was then starting to gain attention in the profession of occupational therapy. In 1988 he accepted an appointment as Professor, Wade-Meyer Chair, and Head at the
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meaningfully on their environments. Upon graduation from USC with a Master of Arts degree in
Occupational Therapy, Kielhofner decided to begin advanced study in public health, later earning the Dr.P.H. (Doctor of Public Health) degree from the
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on
February 15, 1949 and lived in rural SE Missouri (Oran) during his boyhood. His early schooling was in nearby Chaffee, Missouri at St. Ambrose School in the Catholic parish of the same name. As a
63:(USC), where he quickly became interested in the theoretical foundations of the profession. During his time as a graduate student at USC, he worked on a theoretical model to better understand
112:, Sweden. In 2017, during occupational therapy's centennial, Kielhofner was honored through his listing among 100 influential occupational therapists in occupational therapy's history by the
59:. Profoundly influenced by an early experience as a very young child helping his Grandmother following a severe car accident, he decided to continue study in occupational therapy at the
30:. He is best known for his conceptual practice model, which is known globally as The Model of Human Occupation (MOHO). The model was first published as a series of articles in
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theorist who rose to prominence as a scholar during his time as
Professor and Wade-Meyer Chair of the Department of Occupational Therapy at the
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Kielhofner, G. (October 1980). "A model of human occupation, part two. Ontogenesis from the perspective of temporal adaptation".
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Kielhofner, G.; Burke, J. (September 1980). "A model of human occupation, part one. Conceptual framework and content".
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Kielhofner, G. (November 1978). "General systems theory: Implications for theory and action in occupational therapy".
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in
Edinburgh, Scotland. He established the Center for Outcomes Research and Education at UIC under a grant from the
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Kielhofner, G. (November 1980). "A model of human occupation, part three. Benign and vicious cycles".
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Kielhofner, G. (April 1977). "Temporal adaptation: A conceptual framework for occupational therapy".
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during the
Vietnam War, he attended seminary before studying psychology and occupational therapy at
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22:(February 15, 1949 – September 2, 2010) was an American social scientist and influential
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Health through
Occupation. Theory and practice in occupational therapy
481:"A Model of Human Occupation, Part 4. Assessment and Intervention"
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Journal of
Occupational Therapy, Schools, & Early Intervention
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O'Brien, J. (2010). "In Memoriam: Gary Kielhofner, DrPH, FAOTA".
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Upon graduation from UCLA, Kielhofner accepted an appointment at
210:""Achieving the Ordinary Things": A Tribute to Gary Kielhofner"
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Braveman, B.; Fisher, G.; Suarez-Balcazar, Y. (November 2010).
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Perspectives on Human Occupation: Theories Underlying Practice
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Kielhofner, G.; Burke, J.P.; Heard Igi, C. (December 1980).
546:"100 Influential People: Gary Kielhofner, DrPH, OTR, FAOTA"
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Conceptual foundations of occupational therapy practice
136:.(3rd Ed). Baltimore: Lippincott, Williams and Wilkins.
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A Model of Human Occupation: Theory and Application
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167:Christiansen, C. H.; Taylor, R. (January 2011).
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550:The American Occupational Therapy Association
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380:(2nd ed.). Philadelphia: F. A. Davis.
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143:(4th Ed). Philadelphia, F.A. Davis.
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