The DOI matches its Crossref record; 23 of the 23 references it cites were found in a registry or an index.
Concordance for the syndrome of autism in 40 pairs of afflicted twins
Abstract
The UCLA Registry for Genetic Studies in Autism was established in 1980 to test the hypothesis that genetic factors may be etiologically significant in subsets of patients. To date 61 pairs of twins have enrolled and 40 meet research diagnostic criteria for autism. The authors found a concordance for autism in these 40 pairs of 95.7% in the monozygotic twins (22 of 23) and 23.5% in the dizygotic twins (four of 17).
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“Studies making use of twin pairs (7)(8)(9)(10)(11), families (12) and populations (11,13) have provided estimates that over half of risk of developing ASD resides with genetic variation”
From Genetics and genomics of autism spectrum disorder: embracing complexity (2015) · cites this paper as [8]
Citations
Cites
(1943) · The Nervous child · Cited by 8,870
INFANTILE AUTISM: A GENETIC STUDY OF 21 TWIN PAIRS
Folstein, S., & Rutter, M. (1977) · Journal of Child Psychology and Psychiatry · doi:10.1111/j.1469-7610.1977.tb00443.x · Cited by 1,361
Galdston, I. (1950) · PubMed Central · Cited by 440
Infantile Autism Reviewed: A Decade of Research
DeMyer, M. K., Hingtgen, J. N., & Jackson, R. (1981) · Schizophrenia Bulletin · doi:10.1093/schbul/7.3.388 · Cited by 376
National society for autistic children definition of the syndrome of autism
(1978) · Journal of Autism and Childhood Schizophrenia · doi:10.1007/bf01537864 · Cited by 296
The Incidence of Cognitive Disabilities in the Siblings of Autistic Children
August, G. J., Stewart, M. A., & Tsai, L. (1981) · The British Journal of Psychiatry · doi:10.1192/bjp.138.5.416 · Cited by 240
Implication of sex differences in the familial transmission of infantile autism
Tsai, L., Stewart, M. A., & August, G. J. (1981) · Journal of Autism and Developmental Disorders · doi:10.1007/bf01531682 · Cited by 185
Introduction: The National Society for Autistic Children's Definition of the Syndrome of Autism
RITVO, E. R., & Freeman, B. J. (1978) · Journal of the American Academy of Child Psychiatry · doi:10.1016/s0002-7138(09)61011-6 · Cited by 125
Self-citationThe genetics, if any, of infantile autism and childhood schizophrenia
Hanson, D. R., & Gottesman, I. I. (1976) · Journal of Autism and Developmental Disorders · doi:10.1007/bf01543463 · Cited by 94
Social class factors in autism
RITVO, E. R., Cantwell, D. P., Johnson, E., Clements, M., Benbrook, F., Slagle, S., Kelly, P., & Ritz, M. (1971) · Journal of Autism and Developmental Disorders · doi:10.1007/bf01557350 · Cited by 56
Self-citationGenetic and immunohematologic factors in autism
RITVO, E. R., Ritvo, E. C., & MASON-BROTHERS, A. (1982) · Journal of Autism and Developmental Disorders · doi:10.1007/bf01531303 · Cited by 28
Self-citationBAKWIN, H. T. (1954) · The Journal of Pediatrics · doi:10.1016/s0022-3476(54)80179-x · Cited by 27
Twins Discordant for Early Infantile Autism
Vaillant, G. E. (1963) · Archives of General Psychiatry · doi:10.1001/archpsyc.1963.01720140059009 · Cited by 22
The Syndrome of Autism: Establishing the Diagnosis and Principles of Management
Freeman, B. J., & RITVO, E. R. (1984) · Pediatric Annals · doi:10.3928/0090-4481-19840401-04 · Cited by 18
Self-citationMcQuaid, P. E. (1975) · The British Journal of Psychiatry · doi:10.1192/bjp.127.6.530 · Cited by 15
AUTISTIC SYNDROME IN ONE OF A PAIR OF MONOZYGOTIC TWINS.
Ln, K. (1996) · PubMed · Cited by 10
Differential development of autistic symptoms in a pair of fraternal twins
Sloan, J. L. (1978) · Journal of Autism and Developmental Disorders · doi:10.1007/bf01537868 · Cited by 8
Early Infantile Autism in Fraternal Twins
Ward, T., & Hoddinott, B. A. (1962) · Canadian Psychiatric Association Journal · doi:10.1177/070674376200700409 · Cited by 8
Group and Family Therapy Abnormalities in Siblings of Schizophrenic Children
Havelkova, M. (1967) · Canadian Psychiatric Association Journal · doi:10.1177/070674376701200403 · Cited by 8
Early infantile autism in monozygotic twins
Eshkevari, H. S. (1979) · Journal of Autism and Developmental Disorders · doi:10.1007/bf01531297 · Cited by 6
Infantile autism in dizygotic twins
Kotsopoulos, S. (1976) · Journal of Autism and Developmental Disorders · doi:10.1007/bf01538056 · Cited by 6
Early Infantile Autism in Fraternal Twins
Ward, T. F., & Hoddinott, B. A. (1964) · Canadian Psychiatric Association Journal · doi:10.1177/070674376400900516 · Cited by 6
The syndrome of autism: A medical model.
RITVO, E. R. (1983) · Cited by 6
Self-citation
Research works printed but not linked: 7
- Kanner L, 1943, Nervous Child, 2, 217
- DeMyer MK, Schizophr Bull, 7, 387
- Freeman BJ, 1984, Pediatr Ann, 13, 285
- Kamp LN, 1964, Psychiatr Neurol Neurochir, 67, 143
- Ritvo ER, 1981, Biological Psychiatry 1981: Proceedings of the IlIrd World Congress of Biological Psychiatry
- Thompson JS, 1980, Philadelphia
- Campbell M, Biological Psychiatry: Proceedings of the IlIrd World Congress of Biological Psychiatry
Cited by
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Lord, C., Brugha, T. S., Charman, T., Cusack, J., Dumas, G., Frazier, T., Jones, E. J. H., Jones, R. M., Pickles, A., State, M. W., et al. (2020) · Nature Reviews Disease Primers · doi:10.1038/s41572-019-0138-4 · Cited by 1,859
The Epidemiology of Autism Spectrum Disorders
Newschaffer, C. J., Croen, L. A., Daniels, J., Giarelli, E., Grether, J. K., Levy, S. E., Mandell, D. S., Miller, L. A., Pinto-Martin, J., Reaven, J., et al. (2007) · Annual Review of Public Health · doi:10.1146/annurev.publhealth.28.021406.144007 · Cited by 1,228
Heritability of autism spectrum disorders: a meta-analysis of twin studies
Tick, B., Bolton, P., Happé, F., Rutter, M., & Rijsdijk, F. (2016) · Journal of Child Psychology and Psychiatry · doi:10.1111/jcpp.12499 · Cited by 1,150
Early behavioral intervention, brain plasticity, and the prevention of autism spectrum disorder
Dawson, G. (2008) · Development and Psychopathology · doi:10.1017/s0954579408000370 · Cited by 1,138
Autism and the pervasive developmental disorders
Volkmar, F. R., & Klin, A. (2012) · doi:10.1093/med/9780199696758.003.0214 · Cited by 931
Metadata
- Authors
- RITVO, E. R., Freeman, B. J., MASON-BROTHERS, A., Mo, A., & Ritvo, A.
- Affiliations
- University of California, Los Angeles (US)
- Venue
- American Journal of Psychiatry
- Published
- 1985-01-01
- Volume
- 142
- Issue
- 1
- Pages
- 74-77
- ISSN
- 0002-953X (ISSN-L)
- 1535-7228
- OpenAlex
- W1717251174
- Cited by
- 378
- References
- 23
- Citations by year
- 2025: 1 · 2023: 3 · 2022: 3 · 2021: 4 · 2020: 5 · 2019: 5 · 2018: 6 · 2017: 6 · 2016: 15 · 2015: 14 · 2014: 15 · 2013: 13 · 2012: 22
- FWCI
- 9.59
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- American Journal of Psychiatry (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Institute of Mental Health (MH 31274, MH 30897)
- Eunice Kennedy Shriver National Institute of Child Health and Human Development (HD-04612)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
- Keywords
- autism spectrum disorder, twin concordance, monozygotic twins, dizygotic twins, genetic etiology, twin registry
- MeSH terms
- Adolescent, Adult, Age Factors, Autistic Disorder, Birth Order, Child, Child, Preschool, Diseases in Twins, Female, Humans, Male, Models, Genetic, Pregnancy, Registries, Sex Factors, Twins, Dizygotic, Twins, Monozygotic, United States
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