Renzulli's model: Needed research

In this response to Renzulli's 25-year review of his work, I develop 3 ques tions for examining his perspectives: (a) Does Renzulli's conception reflec t the gifted population.? (b) Do school system practices reflect the concep tion? and (c) How do implemented practices of the model affect the school s ystem and the gifted student I argue that no classroom observational studie s critically examine the dynamic interaction of Renzulli's Three-Ring Conce ption of Giftedness, that within a school context it is difficult to operat ionalize, and that its complexity limits the number of implementation studi es that focus on its effects. I suggest new questions for research and enco urage studies that examine closely the database's underlying current practi ces promulgated in the field of gifted education.