Glaser is a modern philosopher of education who engaged with debates in critical thinking theory, particularly the dispute over whether general thinking skills exist independent of subject-matter domains. Working in the tradition of critical thinking research, Glaser contested the subject-specificity thesis advanced by John McPeck, arguing that domain-general cognitive skills can be meaningfully identified and cultivated.
Critiqued McPeck's subject-specificity thesis regarding critical thinking
Contributed to debates on the generalizability of thinking skills across disciplines
Engaged with foundational questions in educational philosophy about transferable reasoning competencies