Causal effects on child language development: A review of studies in communication sciences and disorders

Rogers, Clare R.; Nulty, Karissa L.; Betancourt, Mariana Aparicio; DeThorne, Laura S.

doi:10.1016/j.jcomdis.2015.06.004

Cited by 23 publications

(18 citation statements)

References 98 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The significance of nonshared environmental effects tells us that individualized experiences shape language development, which to some extent is difficult to reconcile with the field's heavy focus on caregiver interaction style and amount of linguistic input (cf. Rogers et al, 2015). Given that caregivers are generally the same within twin pairs, such variables could not be contributing in isolation to the significant nonshared environmental effects observed here.…”

Section: Implications For Clinical Practice and Future Researchmentioning

confidence: 74%

See 1 more Smart Citation

Longitudinal Effects on Early Adolescent Language: A Twin Study

Harlaar

DeThorne

Mahurin-Smith

et al. 2016

J Speech Lang Hear Res

Self Cite

View full text Add to dashboard Cite

Purpose We evaluated genetic and environmental contributions to individual differences in language skills during early adolescence, measured by both language sampling and standardized tests, and examined the extent to which these genetic and environmental effects are stable across time. Method We used structural equation modeling on latent factors to estimate additive genetic, shared environmental, and nonshared environmental effects on variance in standardized language skills (i.e., Formal Language) and productive language-sample measures (i.e., Productive Language) in a sample of 527 twins across 3 time points (mean ages 10–12 years). Results Individual differences in the Formal Language factor were influenced primarily by genetic factors at each age, whereas individual differences in the Productive Language factor were primarily due to nonshared environmental influences. For the Formal Language factor, the stability of genetic effects was high across all 3 time points. For the Productive Language factor, nonshared environmental effects showed low but statistically significant stability across adjacent time points. Conclusions The etiology of language outcomes may differ substantially depending on assessment context. In addition, the potential mechanisms for nonshared environmental influences on language development warrant further investigation.

show abstract

Section: Implications For Clinical Practice and Future Researchmentioning

confidence: 74%

“…Last, behavioral genetic analyses are not well positioned to examine the complexities of epigenetic effects, specifically environmental influences on genetic expression (cf. Kraft & DeThorne, 2014;Rogers, Nulty, Aparicio Betancourt, & DeThorne, 2015).…”

Section: Study Limitationsmentioning

confidence: 99%

Longitudinal Effects on Early Adolescent Language: A Twin Study

Harlaar

DeThorne

Mahurin-Smith

et al. 2016

J Speech Lang Hear Res

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, we also found that maternal depression 6 weeks post partum significantly increased the probability of membership in the communication declining class. Acquiring language is a complex developmental challenge that depends on a range of intrinsic (pre‐programmed, biological) and extrinsic influences such as mother–child non‐verbal and verbal interaction and social support in the child's proximal environment (Rogers et al ). Henrichs et al () suggested that biological or genetic predispositions reflected more severe deficits related to persistent delays among 18‐ to 30‐month‐old children, while transient trajectories reflected mild neurodevelopmental lags that could easily be compensated for by improving home environments (Henrichs et al ).…”

Section: Resultsmentioning

confidence: 99%

Developmental pathways in infants from 4 to 24 months

Valla

Birkeland

Hofoss

et al. 2017

Child

View full text Add to dashboard Cite

The results suggest that infants with low gestational age, low Apgar score, male sex and a mother with depression symptoms or non-Scandinavian ethnicity may be at risk of developing less beneficial developmental pathways, especially within the communication area. Targeting these infants for surveillance and support might be protective against delayed development in several areas during a critical window of development.

show abstract

“…There are relatively few studies evaluating specific cognitive domains, and language development, in particular, has received very little emphasis. In addition, what limited evidence is available has not migrated into the mainstream literature within communication sciences and disorders where it has the potential to directly impact clinical practice (Rogers et al, this issue). …”

Section: Introductionmentioning

confidence: 99%

Prenatal chemical exposures and child language development

Dzwilewski

Schantz

2015

Journal of Communication Disorders

View full text Add to dashboard Cite

The goal of this review is to summarize the evidence that prenatal and/or early postnatal exposure to certain chemicals, both man made (insulating materials, flame retardants, pesticides) and naturally occurring (e.g. lead, mercury), may be associated with delays or impairments in language development. We focus primarily on a subset of more extensively studied chemicals—polychlorinated biphenyls (PCBs), lead, and methyl mercury—for which a reasonable body of literature on neurodevelopmental outcomes is available. We also briefly summarize the smaller body of evidence for other chemicals including polybrominated diphenyl ether flame retardants (PBDEs) and organophosphate pesticides. Very few studies have used specific assessments of language development and function. Therefore, we included discussion of aspects of cognitive development such as overall intellectual functioning and verbal abilities that rely on language, as well as aspects of cognition such as verbal and auditory working memory that are critical underpinnings of language development. A high percentage of prospective birth cohort studies of PCBs, lead and mercury have reported exposure-related reductions in overall IQ and/or verbal IQ that persist into middle or late childhood. Given these findings, it is important that clinicians and researchers in communication sciences and disorders are aware of the potential for environmental chemicals to impact language development.

show abstract

Causal effects on child language development: A review of studies in communication sciences and disorders

Cited by 23 publications

References 98 publications

Longitudinal Effects on Early Adolescent Language: A Twin Study

Longitudinal Effects on Early Adolescent Language: A Twin Study

Developmental pathways in infants from 4 to 24 months

Prenatal chemical exposures and child language development

Contact Info

Product

Resources

About