The Assessment of Phonological Processes-Revised (APP-R) is a measure of a child’s ability to produce patterns of articulation in single words and is designed for highly unintelligible children. Phonological processes that occur at a high frequency (greater than 40%) significantly impact the overall ability to be understood.
Pattern Deviations Percentage of Occurrence
Prevocalic Singleton Omissions
Postvocalic Singleton Omissions
Consonant Sequence Reductions
Liquid /l/ Deficiency
Liquid /r/ Deficiency