산업 디자인
The transgenerational design concept emerged from his federally funded design-for-aging research project, "Industrial design Accommodations: A Transgenerational Perspective". The project's two seminal 1988 publications provided detailed information about the aging process; informed and sensitized industrial design professionals and design students about the realities of human aging; and offered a useful set of guidelines and strategies for designing products that accommodate the changing needs of people of all ages and abilities.