context: Physicalism was originally the doctrine of the Vienna district thinkers Otto Neurath and Rudolf Carnap that all meaningful claims can be translated into claims made in physical language. The term "physicalism" was coined by Neurath. Physicalism was a reductionist doctrine against phenomenalism, the notion of reality based on observable phenomena. [3] The word 'materialism' is nowadays often understood as synonymous with the word 'physicalism', although the original physicalism of the Vienna district was not so much an ontological as a theoretical or linguistic philosophy. [2]
question: Who Developed Physicalism?
answers.text: Otto Neurath and Rudolf Carnap