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Developmental trajectories in siblings of children with autism: cognition and language from 4 months to 7 years.

Gamliel I, Yirmiya N, Jaffe DH, Manor O, Sigman M - J Autism Dev Disord (2009)

Bottom Line: At 7 years, 40% of the SIBS-A, compared to 16% of SIBS-TD, were identified with cognitive, language and/or academic difficulties, identified using direct tests and/or parental reports.This sub-group was identified as SIBS-A-broad phenotype (BP).Results indicated that early language scores (14-54 months), but not cognitive scores of SIBS-A-BP and SIBS-A-nonBP were significantly lower compared to the language scores of SIBS-TD, and that the rate of development was also significantly different, thus pinpointing language as a major area of difficulty for SIBS-A during the preschool years.

View Article: PubMed Central - PubMed

Affiliation: School of Education, Hebrew University of Jerusalem, Jerusalem, Israel.

ABSTRACT
We compared the cognitive and language development at 4, 14, 24, 36, 54 months, and 7 years of siblings of children with autism (SIBS-A) to that of siblings of children with typical development (SIBS-TD) using growth curve analyses. At 7 years, 40% of the SIBS-A, compared to 16% of SIBS-TD, were identified with cognitive, language and/or academic difficulties, identified using direct tests and/or parental reports. This sub-group was identified as SIBS-A-broad phenotype (BP). Results indicated that early language scores (14-54 months), but not cognitive scores of SIBS-A-BP and SIBS-A-nonBP were significantly lower compared to the language scores of SIBS-TD, and that the rate of development was also significantly different, thus pinpointing language as a major area of difficulty for SIBS-A during the preschool years.

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Total language based on parent reports and test scores (Model 1)
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Fig4: Total language based on parent reports and test scores (Model 1)

Mentions: A growth curve model was used to assess changes in language (total, receptive, and expressive language scores) over four points in time: 14, 24, 36, and 54 months (Tables 4, 5, 6). We examined linguistic differences among the three groups using three models, as presented for the cognitive scores. The models predicted trajectories in language development from 14 to 54 months. The overall pattern of language development followed a U-shape for the total and expressive language scores (Figs. 4, 7, 10, 6, 9, 12, respectively) and followed a linear shape for the growth in receptive language scores (Figs. 5, 8, 11).Table 4


Developmental trajectories in siblings of children with autism: cognition and language from 4 months to 7 years.

Gamliel I, Yirmiya N, Jaffe DH, Manor O, Sigman M - J Autism Dev Disord (2009)

Total language based on parent reports and test scores (Model 1)
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC2710494&req=5

Fig4: Total language based on parent reports and test scores (Model 1)
Mentions: A growth curve model was used to assess changes in language (total, receptive, and expressive language scores) over four points in time: 14, 24, 36, and 54 months (Tables 4, 5, 6). We examined linguistic differences among the three groups using three models, as presented for the cognitive scores. The models predicted trajectories in language development from 14 to 54 months. The overall pattern of language development followed a U-shape for the total and expressive language scores (Figs. 4, 7, 10, 6, 9, 12, respectively) and followed a linear shape for the growth in receptive language scores (Figs. 5, 8, 11).Table 4

Bottom Line: At 7 years, 40% of the SIBS-A, compared to 16% of SIBS-TD, were identified with cognitive, language and/or academic difficulties, identified using direct tests and/or parental reports.This sub-group was identified as SIBS-A-broad phenotype (BP).Results indicated that early language scores (14-54 months), but not cognitive scores of SIBS-A-BP and SIBS-A-nonBP were significantly lower compared to the language scores of SIBS-TD, and that the rate of development was also significantly different, thus pinpointing language as a major area of difficulty for SIBS-A during the preschool years.

View Article: PubMed Central - PubMed

Affiliation: School of Education, Hebrew University of Jerusalem, Jerusalem, Israel.

ABSTRACT
We compared the cognitive and language development at 4, 14, 24, 36, 54 months, and 7 years of siblings of children with autism (SIBS-A) to that of siblings of children with typical development (SIBS-TD) using growth curve analyses. At 7 years, 40% of the SIBS-A, compared to 16% of SIBS-TD, were identified with cognitive, language and/or academic difficulties, identified using direct tests and/or parental reports. This sub-group was identified as SIBS-A-broad phenotype (BP). Results indicated that early language scores (14-54 months), but not cognitive scores of SIBS-A-BP and SIBS-A-nonBP were significantly lower compared to the language scores of SIBS-TD, and that the rate of development was also significantly different, thus pinpointing language as a major area of difficulty for SIBS-A during the preschool years.

Show MeSH
Related in: MedlinePlus