Prof. Kidd’s research focuses on late 19th and early 20th Century European philosophy and contemporary philosophy of mind. He also has significant research interests in Plato, Kant, and applied ethics.

He writes on (i) the role of the concepts of judgment, truth, and normativity in Edmund Husserl’s phenomenological philosophy, (ii) skepticism, and (iii) cognitive phenomenology (or 'what it’s like’ to think, judge, believe, doubt).