The most frequently occurring type of cerebral palsy is spastic cerebral palsy.

The most frequently occurring dysarthria is spastic dysarthria.

Casey is four years old.She presents with a phonemic inventory of 5 consonants and 5 vowels,and inconsistent substitution,omission and distortion errors involving these speech sounds.The frequency of her speech sound errors increase as word length increases.She also exhibits monopitch and monoloudness.Her likely diagnosis is