Jerome Bruner is the theorist associated with the Concept Attainment Model:
Background
Bruner was a psychologist and educator at New York University Law School. He was a leader in the Cognitive Revolution in Psychology and the educational reform movement in the 1960s.
Concept Attainment Model
Bruner developed the Concept Attainment Model in 1956, along with Jacqueline J. Goodnow and George A. Austin. It's a teaching strategy that encourages critical thinking and involves students applying their prior knowledge to determine the attributes of a concept.