The aim of the study is to provide Dutch norms for the Bayley Scales of Infant and Toddler Development, 3rd edition (Bayley III; Bayley 2006), including a reliability and validation study.
ID
Source
Brief title
Condition
- Other condition
- Developmental disorders NEC
Synonym
Health condition
Normale ontwikkeling
Research involving
Sponsors and support
Intervention
Outcome measures
Primary outcome
The primary study outcome are the Dutch norms for the Bayley III including
validation and reliability studies done in subgroups of the healthy children.
The validation study concerns the following developmental assessments: the Ages
and Stages Questionnaires (ASQ; Squires, Potter & Bricker, 1999; ASQ-SE;
Squires et al., 2002) for children between 2 and 60 months old; de Wechsler
Preschool and Primary Scale of Intelligence (WPPSI, Wechsler, 2002) for
children between 30 and 42 months old; the Reynell test for language
comprehension (Van Eldik, Schlichting, Lutje Spelberg, B.F. van der Meulen &
Sj. van der Meulen, 1995) and the Schlichting test for language expression
(Schlichting, van Eldik, Lutje Spelberg, Sj. van der Meulen & B.F. van der
Meulen, 1995) for children between 15 and 27 months old; as wel as the old
version of the Dutch Bayley scales, BSID-II-NL (Van der Meulen, Ruiter, Lutje
Spelberg & Smrkovsky, 2002).
Secondary outcome
Parent questionnaires inform on parenting, personality, and family background
characteristics that may affect child development. This information is needed
for descriptive purposes and may be used in relation to evaluate children with
extreme scores.
Background summary
Standardized diagnostic instruments for infants and toddlers with appropriate
Dutch norms are necessary for research as well as clinical practice in The
Netherlands, in order to identify developmental problems and to evaluate
intervention programs. In the western world, as well as in The Netherlands the
Bayley Scales of Infant Development (BSID II, Bayley 1993; BSID-II-NL ((Van der
Meulen, Ruiter, Lutje Spelberg & Smrkovsky, 2000) are frequently used for these
purposes. In 2006 a new version was published, the Bayley III. This version is
an adaptation of the earlier editions, that results in a better and more
differentiated assessment of the developmental level of infants and toddlers.
In stead of two scales (concerning mental and motor development), the Bayley
III now consists of five subscales, regarding cognitive development, language
comprehension and - expression, and fine and gross motor development. A parent
questionnaire was added that regards socio-emotional development and adaptive
functioning. This has increased the diagnostic potential of the scales.
However, Dutch norms for the Bayley III are lacking.
Study objective
The aim of the study is to provide Dutch norms for the Bayley Scales of Infant
and Toddler Development, 3rd edition (Bayley III; Bayley 2006), including a
reliability and validation study.
Study design
This is an observational and crossectional study that is designed in analogy to
the American norm studies for the original Bayley III.
Study burden and risks
Parents' participation is voluntary and they are free to withdraw from the
study at all times without consequences. The study does not burden the
children. Usually the infants and toddlers enjoy the games and play materials
very much. If they don't want to cooperate with a game another game is
selected. If the children repeatedly do not want to cooperate, or if the
parents like to stop, the assessment is broken off. Time investment depends on
the age of the child and varies from * to 1* hours per test. Two appointments
are made for children in the test-retest reliability subgroup, resulting in in
1 to 3 hours in total. For the children in the validation subgroup also two
appointemnets are made, needing a total of 2 to 2* hours. The parents answer
questionnaires that takes 1* to 2 hours, They also escort their children to the
appointements, which needs another * to 3 hours, making a total of 2 to 5 hours
for the parents.
Heidelberglaan 1
3584 CS Utrecht
NL
Heidelberglaan 1
3584 CS Utrecht
NL
Listed location countries
Age
Inclusion criteria
90% Of the normgroup consists of healthy children, representative for the Dutch population regarding parental education, geografic location, and etnic origin. Concerning age, 17 agegroups will be used: these vary from 16 days to 1 months and 15 days gradually to 39 months and 0 days to 43 months and 15 days. The normgroups consists of 50% boys and 50% girls.
However, 10% Of the data come from assessments of children with risk factors (e.g. premature birth, delayed language development, symtoms within the autistic spectrum) or a special condition (e.g. Down syndrome or Cerebral Palsy), in order to improve representativeness of the normgroup.
Exclusion criteria
90% (N=1530) of the normgroup consists of healthy children without risk factors or specific conditions, such as, prematurity; low birthweight; hospital admittance during the study; severe sensory impairments; respiratory disorder; intraventricular hemorrhage; inborn errors of metabolism; one of the following diagnoses: attention deficit hyperactivity disorder, chromosomal abnormality, congenital infections, disorder due to prenatal exposure to toxic substances, disorders repflecting disturbance of the development of the nervous system, genetic or congenital disorder, mental retardation.
However for 10% (N=170) of the sample one of these risk factors or special conditions explicitly forms a selection criterium.
Design
Recruitment
Followed up by the following (possibly more current) registration
No registrations found.
Other (possibly less up-to-date) registrations in this register
No registrations found.
In other registers
| Register | ID |
|---|---|
| CCMO | NL29428.041.09 |