Language development and behaviour problems in toddlers indicated to have a developmental language disorder

Background

There is empirical evidence that a developmental language disorder (DLD) in early childhood leads to behaviour problems. However, it is still not clear how changes in language proficiency in these children influence the presence of behaviour problems.

Aims

The aim of this study is to examine if changes in language proficiency are related to changes in behaviour problems in toddlers indicated to have DLD.

Methods & Procedures

This study included 185 toddlers indicated to have DLD (mean age 38 months at pretest). Scores on receptive and expressive language domains and internalizing and externalizing behaviour were gathered on Wave 1 and Wave 2 using Routine Outcome Monitoring. The Reliable Change Index was used to categorize children into two groups: children improving in receptive and expressive language domains and children not improving.

Outcomes & Results

For receptive syntax, receptive vocabulary and expressive syntax, 30% or less of the children improved. Only for expressive vocabulary, most children improved (63%). Behaviour problems were present in 17% (internalizing) and 23% (externalizing) of the children. Changes in language proficiency did not lead to changes in internalizing or externalizing behaviour problems, not for the total sample, nor for children displaying behaviour problems at Wave 1.

Conclusions & Implications

Professionals working with toddlers indicated to have DLD need to be aware of the co-occurrence of language problems and behaviour problems, and have to realize that behaviour problems might not immediately decrease when language proficiency improves. If behaviour problems are present in toddlers indicated to have DLD, interventions should not only focus on language, but also on behaviour problems.

What this paper adds What is already known on the subject

There is empirical evidence that a developmental language disorder (DLD) in early childhood leads to behaviour problems. However, it is still not clear how changes in language proficiency in children with DLD influence the presence of behaviour problems.

What this paper adds to existing knowledge

This study addresses if a change in language proficiency is related to changes in child behaviour problems in toddlers indicated to have DLD. The results of our study showed that most of the children did not show a positive reliable change in receptive syntax, receptive vocabulary and expressive syntax at this young age, but most of the children did in expressive vocabulary. Furthermore, changes in language proficiency did not lead to changes in the presence of internalizing or externalizing behaviour problems.

What are the potential or actual clinical implications of this work?

Therefore, professionals working with toddlers indicated to have DLD should be aware of the co-occurrence of language problems and behaviour problems, and have to realize that behaviour problems might not decrease as a result of improved language proficiency. If behaviour problems are present and need to be treated, other interventions, apart from the language intervention, might be necessary.

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