Attentional Regulation in Young Twins With Probable Stuttering, High Nonfluency, and Typical Fluency
Attentional Regulation in Young Twins With Probable Stuttering, High Nonfluency, and Typical Fluency
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DOI:
10.1044/1092-4388(2010/09-0164
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发表时间:
2010-10-01
影响因子:
2.6
通讯作者:
Boomsma, Dorret Irene
中科院分区:
文献类型:
--
作者:
Felsenfeld, Susan;van Beijsterveldt, Catharina Eugenie Maria;Boomsma, Dorret Irene
Purpose: Using a sample of 20,445 Dutch twins, this study examined the relationship between speech fluency and attentional regulation in children. A secondary objective was to identify etiological overlap between nonfluency and poor attention using fluency-discordant twin pairs.Method: Three fluency groups were created at age 5 using a parent questionnaire: (a) probable stuttering (PS; N = 826; 4.0%), highly nonfluent (HNF; N = 547; 2.7%), and typically fluent (TF; N = 19,072; 93%). Multiple scales assessing attention, primarily self-regulation/inhibition, were obtained from both parents when children were ages 5 and 7 and from teachers when children were age 7.Results: When compared with the TF controls, both the PS and HNF children received higher (i.e., more problematic) scores on parental attention ratings at both ages (p < .002). Effect sizes were moderate for both groups. Teacher and parent ratings were generally comparable. The discordant co-twin analyses suggested that nonfluency and attention were influenced by potentially overlapping genetic and shared environmental factors.Conclusions: The liability to express both high nonfluency and problems with self-regulation/inhibition may arise from a common set of pathogenic mechanisms. This supports emerging models of stuttering, which propose that poor fluency may be part of a broader network of impaired self-regulatory processes.