When did Daniel R. Boone recognize the benefits of intention for speech deficits related to Parkinson's?

Daniel R. Boone recognized the benefits of intention for speech deficits related to Parkinson's in the 1950s. This period was significant as it marked increased awareness and research into the relationship between intention and speech production, particularly for individuals with neurological conditions such as Parkinson's disease. During the 1950s, Boone's work began to focus on the concept that by harnessing the power of intention, individuals could improve their communication abilities despite the challenges posed by their condition. This realization contributed to the development of therapeutic strategies aimed at enhancing speech clarity and effectiveness in those affected by such disorders, bridging the gap between theoretical understanding and practical application in speech therapy.