Long-term stability of improved language functions in chronic aphasia after constraint-induced aphasia therapy

Abstract

In response to the established notion that improvement of language functions in chronic aphasia can only be achieved through long-term treatment, we examined the efficacy of a short-term, intensive language training, constraint-induced aphasia therapy (CIAT). This program is founded on the learning principles of prevention of compensatory communication (constraint), massed practice and shaping (induced). 27 patients with chronic aphasia received 30 hours of training over 10 days. Language functions improved significantly after training and remained stable over a 6-month follow-up period. Singel case analyses revealed statistically significant improvements in 85% of the patients. Patients and relatives rated the quality and amount of communication as improved after therapy. Results confirm that a short-term intense language training, based on learning principles, can lead to substantial and lasting improvements in language function in chronic aphasia.