Convergent Validity of the Cross‐Linguistic Lexical Task

What is already known on this subject The validity of parental checklists in relation to direct vocabulary assessments is well established, particularly in pre-school-aged children. However, there is limited research exploring the relationship between different direct measures of lexical knowledge. This gap highlights the need for further investigation to understand how various methods complement each other in assessing lexical skills. What this paper adds to existing knowledge This study supports the convergent validity of the CLT-SK. It extends current knowledge by exploring relationships between different types of lexical assessments, within a new language, and provides unique insights into the agreement between individual items when evaluated using different methods. The study found that the overall scores of different lexical measures appear to be related, but the validity at the level of individual test items is low. What are the potential or actual clinical implications of this work? The results suggest that lexical assessments are effective for evaluating overall vocabulary knowledge but may not reliably measure specific word knowledge. The study supports the validity of the CLT-SK, highlighting its quick, child-friendly administration, low costs and high accessibility for diverse populations and clinical settings. These features enhance its utility and contribute to the broader applicability of the CLT framework across multiple languages.