Neem contact op
For researchers

The Dutch Longitudinal DLD Study

The Dutch Longitudinal DLD Study follows 600 children with a (presumed diagnosis of) developmental language disorder (DLD) for 20 years. This page provides information on the goal and participants and the time points, variables and instruments. You can also check our first results and find an overview of our papers, conference contributions and other publications.

About our study

In the DLDLD study we collect data at various moments during a child’s childhood and adolescence. We are interested in children’s development with regard to language, academic skills, social-emotional functioning, quality of life, and executive functions.  In our data collection we involve the children themselves, their parent(s), and their teacher(s). 

By the end of this study we will have obtained a lot of valuable information on a wide variety of aspects of children’s development. Examples of what we have already analysed are:  

Timeline

The timeline below contains information about the moments at which we collect data and the specific instruments we use to do so.

0

Preschool

1

Kindergarten

2

Grade 1

3

Grade 3

4

Secondary school

5

Further education

6

Work

Preschool

Child

Domain
Child and environmental factors
Language
Variable (instrument)
Non-verbal IQ (SON 7/8)
Gender
Receptive vocabulary (PPVT-3-NL)
Language comprehension (Schlichting TB)
Expressive vocabulary (Schlichting WO)
Expressive syntax (Schlichting ZO)

Treatment group

Domain
Child and environmental factors
Variable (instrument)
Advice school placement and educational support
Kindergarten

Parent

Domain
Child and environmental factors
Language
Social-emotional functioning
Quality of life
Variable (instrument)
School placement and educational support
Treatment by an SLT
Educational level parents
Multilingualism
Family health history
Intelligibility (ICS)
Communicative participation
Strenghts and difficulties questionnaire (SDQ)
Kiddy-KINDL-R

Teacher

Domain
Academic skills
Variable (instrument)
Pupil monitoring system scores (CITO)
Grade 1

Parent

Domain
Child and environmental factors
Language
Social-emotional functioning
Academic skills
Variable (instrument)
School placement and educational support
Treatment by an SLT
Additional diagnoses
Intelligibility (ICS)
Communicative participation
Social-emotional Questionnaire (SEV)
Pupil monitoring system scores (CITO)
Grade 3

Parent

Domain
Child and environmental factors
Language
Quality of life
Executive functioning
Instrument
School placement and educational support
DLD diagnosis
Additional diagnoses
Multilingualism
Intelligibility (ICS)
Communicative participation
Pragmatics (CCC coherence)
KINDL-R
BRIEF-2-NL

Child

Domain
Language
Quality of life
Academic skills
Instrument
Tests for receptive language and grammar (CELF-5 linguistic concepts, word structure, repeating sentences & formulating sentences)
KID-KINDL
Mathematics (TTR)
Reading fluency of words (EMT)
Reading fluency of non-words (Klepel)

Teacher

Domain
Academic skills
Instrument
Pupil monitoring system scores (CITO)
Secondary school

Parent

Domain
Child and environmental factors
Language
Quality of life
Executive functions
Variable (instrument)
School placement and educational support
Treatment by an SLT
DLD-diagnosis (where, why and by whom?)
Addional diagnoses
Multilingualism
Intelligibility (ICS)
Communicative participation
Pragmatic skills (CCC coherence)
Kid-KINDL-R
BRIEF-2-NL

Child

Domain
Language
Quality of Life
Academic skills
Variable (instrument)
Receptive language (CELF-5 linguistic concepts)
Expressive grammar (CELF-4 word structure)
Expressive syntax (CELF-5 recalling sentences)
Expressive syntax (CELF-5 formulating sentences)
Kid-KINDL
Math skills (TTR)
Reading fluency of words (EMT)
Reading fluency of non-words (Klepel)

Teacher

Domain
Academic skills
Variable (instrument)
Pupil monitoring system scores (CITO)
Further education

To be determined

Domain
Language, cognition, socio-emotional functioning, academic skills and quality of life
Variables (instrument)
To be determined
Work

To be determined

Domains
Language, cognition, socio-emotional functioning, academic skills and quality of life
Variables (instruments)
To be determined

The DLDLD-study sheds light on how DLD affects participation in communication, academics and society across the lifespan.

Iris Duinmeijer
Project leader

How do we keep our participants engaged?

As with most longitudinal studies, attrition is an important issue. As can be seen in the timeline, our measurements lie several years apart. This means we have to actively keep our participants and their parents engaged in the project. There are several things we do to prevent attrition:

  • Send out newsletters via e-mail
  • A Facebook group for (parents of) our participants
  • Send yearly presents to all participants
  • Homevisits in Grade 3 and secondary education
  • A yearly or two-yearly ‘DLDLD study day’ at a museum or other fun location
  • A child and parent panel that meets twice a year
Team Taal in Zicht

Who are we?

Our team consists of researchers from different institutions in the Netherlands. Currently, the following people are part of team Taal in Zicht:

 

Iris Duinmeijer, project leader – NSDSK

Annette Scheper, senior researcher – Kentalis

Britt Hakvoort, senior researcher – Auris

Mélanie van Barreveld, PhD-student – Kentalis

Wendy Bliekendaal, researcher – Auris

Charlotte Cohen, researcher – Auris

Lonneke Janssen, researcher – Kentalis

Luisa de Heer, researcher– NSDSK

Nikki Smit, researcher – NSDSK

Margo Zwitserlood, clinical linguist and researcher – Pento

Marijke Zoons, speech-language pathologist – Adelante

 

Want to know more?

Get in touch

Do you want to get in touch with us about our study, collaboration or a publication?

Contact

Knowledge base

Have a look at our publications, presentations and more!

Knowledgebase