“…Furthermore, with children with developmental disorders such as Autism Spectrum Disorder (ASD) and Fragile X Syndrome (FXS), parental assessments of language and reading using the Vineland Adaptive Behavior Scales (Sparrow, Cicchetti & Balla, 2005) have been found to yield high levels of agreement with experimenter administered tests such as the Mullen Scales of Early Learning (Mullen, 1995, Mullen Receptive: r = 0.53, Mullen Expressive: r = 0.85), the Neale Analysis of Reading Ability (NARA; Neale, 2007, Passage-level accuracy: r = 0.81, Passage-level comprehension: r = 0.88), the Early Language Milestones Scales (Coplan, 1993, r s = 0.24 – 0.50), the Receptive-Expressive Emergent Language Scale (Bzoch & League, 1991, r s = 0.47 – 0.67), and the Wide Range Achievement Test (WRAT; Wilkinson & Roberton, 2006, r = 0.70) (Luyster et al, 2008; Arciuli, Stevens, Trembath, & Simpson, 2013; Kover, McCary, Ingram, Hatton, & Roberts, 2015). Additionally, researchers have demonstrated that parent reports can yield similar categorizations of developmental delay.…”