Spanish translation: hábito de llevarse los objetos a la boca
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Sensory impairment is considered by many researchers to be a defining characteristic of autism (Gillberg and Coleman, 1992; Williams, 1996). Baranek (1999) detected sensory-motor problems - touch aversion, poor non-social visual attention, excessive mouthing of objects, and delayed response to name - in 9-12 month old infants later diagnosed with autism, and suggests that these impairments both underlie later social deficits and serve to differentiate ASD from mental retardation and typical controls.