The VLOT (Questionnaire Parents Home Language Environment) is a new measure for assessing (dual) language exposure in early childhood. The VLOT can be used by professionals to signal risk factors for language development already early in life and to refer children to provisions for preschool education and language therapy. In the current project, a longitudinal study is conducted in order to validate the VLOT and determine the optimal cut-off values for the screening. We examine the reliability, construct validity, predictive value and sensitivity-specificity of the VLOT.



This project is funded by ZonMW.