Pre-Linguistic Autism Diagnostic Observation Schedule (PL-ADOS)
The Pre-Linguistic Autism Diagnostic Observation Schedule (ADOS; Lord et al., 1989) is a semistructured observation scale modified to diagnose young children (under the age of 6 years) who are not yet using phrase speech and are suspected of having autism.
The PL-ADOS consists of eight tasks, four focusing on social behaviors and four on communicative behaviors. It takes approximately 30 minutes to administer and it is a semi-structured assessment of play, interaction, and social communication.
PL-ADOS scores of nonverbal preschool-aged children referred for clinical diagnosis and classified on the basis of a diagnostic team’s clinical judgment, clearly discriminated between autistic and nonautistic developmentally disabled children.
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