Theory & Evidence
In a study examining the psychometric qualities of 15 standardized spoken language assessments for children 4 to 12 years of age, the ALL was identified as one of only four assessments “having better evidence of reliability and validity” (Denman et al., 2017, p.26) and thus recommended for diagnostic use. Denman D, Speyer R, Munro N, Pearce WM, Chen Y-W and Cordier R (2017). Psychometric Properties of Language Assessments for Children Aged 4–12 Years: A Systematic Review.Front. Psychol. 8:1515.