Autism Perceptual – Behavioural Precision Scale

Abstract

The Perceptual-Cognitive-Behavioural Diagnostic Precision Scale for Autism Spectrum Disorder allows to complement the analysis of the autism diagnosis through the measurement of variables the neuropsychological processing of human information to avoid high errors over ASD diagnosis currently existing, derived from unilateral analysis of the behaviour criteria component of the actual Scales. The empirical scoring of the Scale has been verified to N= 75, being 38 participants belonging to the TEA-1 level, 24 to TEA-2 and 13 to TEA-3, has allowed find a statistical reliability of Cronbach's Alpha average greater to .91 in the ten dimensions of the Scale: 1) comprehension, 2) significant, 3) categories, 4) intercategorical 5) relationships-neural-nodes, 6) semantic recovery, 7) social interaction, 8) social communication, 9) stereotyped behaviours, and 10) restrictive behaviours. These ten dimensions have been statistically grouped around three great categories to analysis: 1) perceptual-cognitive processing, 2) social interaction, and 3) behaviour. The conclusive statistical analyses indicate that perceptual-cognitive process category explains 88.52% of total accumulated explicative variance, social category: 10.19% and behaviour: 1.28%; which shows the importance of the perceptual-cognitive dimensional factor analysis, in order to conclude with the mean percentiles of the diagnostic conclusion regarding each ASD´ level, according to International Classification of the American Psychiatric Association DSM-5 (APA, 2023).