Autism Spectrum Disorder : A Complex Multi Level Hierarchical Structure

1593 Words Feb 28th, 2016 7 Pages
The visual world is a complex multi-level hierarchical structure, comprised of wholes and their constituent parts (Navon, 1977). Accurate perception of these complex visual scenes necessitates systematized global and local processing, whereby various ‘local’ features are integrated to form a ‘global’ gestalt, and a ‘global’ gestalt is deconstructed and reduced to its ‘local’ components, respectively (Robertson & Lamb, 1991). Abnormalities in visual processing may result in an altered perception of the visual world, jeopardizing the extent to which an individual is able to socially interact with others(Koldewyn, Jiang, Weigelt & Kanwisher, 2013).
Individuals with Autism Spectrum Disorder (IASD) are one group of people thought to ‘see the world differently.’ Autism Spectrum Disorder (ASD) is a complex neurodevelopmental disorder diagnosed when behavior is characterized by persistent difficulties with social communication and social interaction, in addition to restricted, and repetitive patterns of behavior and interests (RRBIs; DSM-V, American Psychiatric Association, 2013). Although it is not currently included in the diagnostic criteria, atypical visual processing has also been indicated as part of the ASD phenotype (Brundson & Happe, 2014). A large number of studies have investigated local and global processing in ASD; however, the literature is marked with inconsistent findings.While it is generally agreed upon that global-local processing is atypical in ASD, the precise…

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