Intellectual Development in Autism Spectrum Disorders: New Insights from Longitudinal Studies

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Vivanti, G., Barbaro, J., Hudry, K., Dissanayake, C., & Prior, M. (2013). Intellectual Development in Autism Spectrum Disorders: New Insights from Longitudinal Studies. Frontiers in Human Neuroscience, 7, 354-354. https://doi.org/10.3389/fnhum.2013.00354

Publication date: 1 Jan 2013 Added to AutiHub: 7 Sep 2026 Type: Article Article language: English
Publisher source (DOI) Full text OpenAlex source

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Authors

Publication authors
5
Publication authors identified as autistic
1 / 5 (20.0%)
  1. Giacomo Vivanti
  2. Josephine Barbaro *
  3. Kristelle Hudry
  4. Cheryl Dissanayake
  5. Margot Prior

Abstract

The presence/absence of Intellectual Disability (ID) is considered to be the most critical factor affecting outcomes in individuals with Autism Spectrum Disorders (ASD). However, the question of the specific nature of ID in ASD has received little attention, with the current view being that ID is a comorbid condition (i.e., one that is unrelated in etiology and causality from the ASD itself). Recent advances in developmental neuroscience, highlighting the importance of early exposure to social experiences for cognitive development, support an alternative view; that ID in ASD might emerge as a consequence of severe social-communication deficits on the experience-dependent mechanisms underlying neurocognitive development. We tested this prediction in two independent samples of young children with ASD (Ns = 23 and 60), finding that children with greater ASD severity at an initial assessment were more likely to present with poorer cognitive outcomes at a later assessment, irrespective of initial cognitive level. The results of this proof of principle study suggest that ASD symptom severity contributes to the extent to which the environmental input required to support "typical" brain development can be processed by the individual, so that the risk of developing ID increases as the number and severity of ASD social-communicative impairments increase.

Bibliography cited by this reference

Cited references are imported from external metadata sources when they are available. The list may be partial.

Cited bibliography overview

These indicators describe the bibliography cited by this publication. An author name is counted each time it appears in one cited reference, so the same person can be counted more than once. Names not yet linked to an author already present in AutiHub are treated as unknown, not as non-autistic. Last computed: 12 Sep 2026 18:18.

Cited references
42
With a DOI
34
Without a DOI, from raw bibliography text
0
3 / 42 (7.1%) cited references include at least one author identified as autistic.
References with data to complete
0 / 42 (0.0%)
References with detected author names
42 / 42 (100.0%)
Without detected author names
0
Without a structured title
0
Without a stable identifier
0
References with raw author names still to review
0
References with external metadata lookup issues
3
These indicators apply to cited references displayed on this page, after technical duplicates have been merged. A reference without a DOI can still support author statistics when a title and author names are available.
Author names detected in the cited bibliography
111
From DOI or external metadata
111
From validated raw bibliography text
0
Raw names already validated
0
Raw names still to review
0
26 / 111 (23.4%) names are linked to an author already present in AutiHub. 85 / 111 (76.6%) names are not yet linked.
Names linked to a person identified as autistic
3 / 111 (2.7%)
Calculated across all author names detected in the cited bibliography. Among names linked to an author already present in AutiHub: 3 / 26 (11.5%). Distinct people identified as autistic: 1 / 101 (1.0%).
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