# EuleApp©: a computerized adaptive assessment tool for early literacy skills

## TL;DR

EuLeApp© is a digital tool that adapts to assess young children's early literacy skills, offering reliable and efficient evaluations.

## Contribution

The study introduces EuLeApp©, an adaptive assessment tool for early literacy grounded in Item Response Theory.

## Key findings

- The 4PL model was found to be the best fit for adaptive assessment of early literacy skills.
- EuLeApp© demonstrated reliability and concurrent validity in assessing children's literacy competencies.
- The tool enables individualized assessments and supports adaptable learning in daycare settings.

## Abstract

Ample evidence indicates that assessing children’s early literacy skills is crucial for later academic success. This assessment enables the provision of necessary support and materials while engaging them in the culture of print and books before school entry. However, relatively few assessment tools are available to identify early literacy skills, such as concepts of print, print awareness, phonological awareness, word awareness, alphabet knowledge, and early reading. The digital landscape presents new opportunities to enhance these assessments and provide enriching early literacy experiences. This study examines the psychometric properties of an adaptive assessment tool, EuLeApp©, focusing on its reliability and concurrent validity.

Data involved 307 German kindergarten children (Mage = 64 months old, range = 45–91). A Computerized Adaptive Testing (CAT) method, grounded in Item Response Theory (IRT), was employed to develop an adaptive digital tool for assessing early literacy competencies. We utilized an automatic item selection procedure based on item difficulty and discrimination parameters for the 183-item pool to ensure a precise and efficient assessment tailored to each child’s ability level.

The 4-parameter Logistic (4PL) model was identified as the best-fitting model for adaptive assessment, providing the highest precision in estimating children’s abilities within this framework.

The findings support the idea that the adaptive digital-based assessment tool EuLeApp© can be used to assess early literacy skills. It also provides a foundation for offering individualized and adaptable learning opportunities embedded in daily routines in daycare centers.