Inclusion Criteria:  Diagnosis of idiopathic CAS based on the presence of specific diagnostic features of apraxia of speech (see ASHA and Strand et al's criteria) and on a comprehensive clinical and neurological assessment. Non-verbal IQ within the normal range at standardized tests of intelligence. Normal structural brain MRI. Acquisition of parents' informed consent to the execution of behavoiural and neuroradiological assessment at baseline and to perform speech/language treatment.  Exclusion Criteria:  Orofacial structural abnormalities. Known pathologies of neurological, neurometabolical and genetic etiologies. Audiological deficits. Epilepsy. Intellectual disability. Autism spectrum disorder.