Enhanced discrimination in autism

@article{Oriordan2002EnhancedDI,
  title={Enhanced discrimination in autism},
  author={Michelle O'riordan and Kate C Plaisted},
  journal={Quarterly Journal of Experimental Psychology},
  year={2002},
  volume={54},
  pages={961 - 979}
}
Children with autism are superior to typically developing children at visual search tasks (O'Riordan, Plaisted, Driver, & Baron-Cohen, in press; Plaisted, O'Riordan, & Baron-Cohen, l998b). This study investigates the reasons for this phenomenon. The performance of children with autism and of typically developing children was compared on a series of visual search tasks to investigate two related problems. The first issue was whether the critical determinant of search rate in children is the… 

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  • 2004
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...

References

SHOWING 1-10 OF 43 REFERENCES

Are people with autism and Asperger syndrome faster than normal on the Embedded Figures Test?

TLDR
This work aimed to replicate and extend the finding that children with autism show superior performance on the Embedded Figures Test, by collecting response time (RT) data; by testing adults with autism of normal intelligence; and by testing a group of adults with Asperger syndrome, in order to test for differences between autism and Aspergers syndrome.

Working memory in children with autism and with moderate learning difficulties.

TLDR
It was shown that children with autism were at least as likely as normal children to employ articulatory rehearsal and that they had superior spans to that of children with moderate learning difficulties and group differences in the capacity of the central executive of working memory.

Intact and impaired memory functions in autism.

TLDR
The group with autism performed significantly worse than comparison subjects on measures of temporal order memory, source memory, supraspan free recall, working memory, and EF, but not on short- and long-term recognition, cued recall, or new learning ability, consistent with the predictions of the EF theory.

Enhanced visual search for a conjunctive target in autism: a research note.

TLDR
Children with and without autism were compared on two visual search tasks in which a letter target appeared among two sets of letter distracters, and children with autism showed no significant slowing in reaction time in the conjunctive task and were faster than control children in this task.

Enhanced discrimination of novel, highly similar stimuli by adults with autism during a perceptual learning task.

TLDR
High-functioning adults with autism and control adults were tested on a perceptual learning task that compared discrimination performance on familiar and novel stimuli, which suggested that features held in common between stimuli are processed poorly and features unique to a stimulus are processed well in autism.

Neuropsychological findings in high-functioning men with infantile autism, residual state.

TLDR
Ten men with clear histories of Infantile autism and approximately average verbal and nonverbal intelligence were studied with a comprehensive battery of neuropsychological tests, and the autistic group demonstrated dramatic deficits on simple and complex, verbal andnonverbal problem-solving tasks.

An islet of ability in autistic children: a research note.

  • A. ShahU. Frith
  • Psychology
    Journal of child psychology and psychiatry, and allied disciplines
  • 1983
An aspect of cognitive functioning in autistic children was investigated by comparing their performance on the Children's Embedded Figures Test with that of MA-matched normal and MA- and CA-matched