Vocabulary List Dutch

Abstract

The Lexilijst Nederlands (Dutch Lexi-list), with a major updated version released in 2002, is a standardized psychological scale designed to measure early language acquisition in young Dutch-speaking children. Specifically targeting children between the ages of 15 and 27 months, the instrument assesses developmental progress by utilizing a parental report methodology.

Parents are instructed to indicate which specific words and short sentences their child is currently capable of saying. The scale is available in two equivalent forms, designated Version A and Version B. Comprehensive monthly norms have been developed for the instrument, providing benchmarks calculated for boys and girls combined, as well as separate norm tables for each gender to account for potential sex-based developmental differences.

Keywords

Lexilijst Nederlands, Language acquisition, Child development, Parental report, Toddler language, Dutch language, Questionnaire, Expressive vocabulary.

Authors

Schlichting J, Lutje Spelberg H (2001)

Purpose

The primary purpose of the Lexilijst Nederlands is to provide clinicians, pediatricians, and researchers with a reliable and standardized tool for monitoring early linguistic development. It functions as a screening and assessment instrument, allowing professionals to determine whether a child’s expressive language skills are developing typically and in agreement with established milestones for their age group.

By comparing a child’s reported vocabulary size and sentence use against detailed monthly norms, the instrument facilitates the early identification of potential language delays or disorders. This proactive assessment capability is critical for ensuring that children requiring linguistic support receive timely intervention.

Construct

The scale measures the psychological construct of early Expressive Language Proficiency, specifically focused on the size and complexity of the child’s active, spoken vocabulary and the emergence of basic sentence structures. This construct is categorized broadly under the domains of Communication and Mental Functions.

The inventory approach captures the child’s ability to produce socially relevant words and phrases, which serves as a key indicator of cognitive and linguistic processing capabilities during the crucial toddler phase. It provides a quantitative snapshot of the child’s linguistic output at a specific developmental point.

Validity

Specific detailed psychometric validation data, such as coefficients for construct, criterion, or concurrent validity, are typically documented in the scale’s manual or subsequent academic publications. While the provided source content does not list these specific metrics, the instrument is designed based on common words and phrases highly representative of the expressive vocabulary of young Dutch children, suggesting strong content validity.

The scale’s utility as a comparative measure relies on the assumption that the items selected accurately reflect the full scope of expected linguistic development for the 15–27 month age range within the targeted population. Researchers interested in specific validity studies should consult the referenced author publications.

Reliability

The reliability of the Lexilijst Nederlands is supported by its design feature of having two equivalent versions, Version A and Version B. This design is foundational for assessing alternate-forms reliability, ensuring that scores derived from either version are comparable and consistent.

For a parental report questionnaire, internal consistency (how well the items correlate with each other) is essential. While specific measures like Cronbach’s alpha are not provided in the summary, the instrument’s reliance on detailed age- and gender-specific norms suggests careful standardization to ensure reliable developmental comparisons.

Factor Analysis

The primary design of the Lexilijst Nederlands focuses on quantifying the cumulative size of the expressive vocabulary, often treated as a unidimensional measure of linguistic competence during this early stage. Consequently, detailed factor analysis aimed at delineating multiple underlying linguistic factors (e.g., phonology vs. semantics) is not typically the focus of such early vocabulary lists.

The absence of specific factor analysis results in the initial description implies that the scale is intended to measure a single dominant factor: overall expressive lexicon size. Any subsequent research detailing subscale structures or dimensionality should be referenced separately.

Instrument

Test Type: Parental Report Inventory / Questionnaire

Format: Two equivalent versions (A and B)

Language Available: Dutch (Nederlands)

Population Group: Children

Age Group: 15–27 months

Population Details: Dutch-speaking children. Norms are calculated separately for boys and girls, and combined.

Test Methodology: Parents review a comprehensive list of words and short phrases and mark those their child currently says, providing a rapid assessment of the child’s expressive vocabulary size.

Keywords

Child language assessment, Expressive vocabulary, Developmental norms, Toddler communication, Dutch children, Head/neck functions, Mental functions.

Authors

Author ORCID Identifier: Data not provided.

Affiliation Email addresses: Data not provided.

Correspondence Address: Data not provided.

Permissions & Fee and Test Year

The Lexilijst Nederlands was originally developed by Schlichting J and Lutje Spelberg H in 2001, with a revised version published in 2002. Information regarding licensing, permissions, and associated fees must be obtained directly from the intellectual property holders or designated test distributors.

The explanatory documentation (Toelichtingsformulier) provides further context on the instrument’s use and development. The original PDF can be downloaded here: Toelichtingsformulier PDF.

Reference’s

• Schlichting J, Lutje Spelberg H. (2001). Lexilijst Nederlands. [Scale development publication/Manual].

Items of the Lexilijst Nederlands

IMPORTANT: The following scale items must be preserved in their original language and must not be changed in any way.

The specific word lists and short sentence items comprising the Lexilijst Nederlands are proprietary and were not included in the provided source material. The inventory encompasses hundreds of common items categorized across various semantic fields (e.g., people, objects, actions) that constitute the expected expressive repertoire of Dutch toddlers aged 15 to 27 months.