How should children’s bilingual experience be measured? What common measures of language experience should be used to allow comparability between studies? To what extent can/should researchers and practitioners (teachers, speech and language therapists) use the same measures to profile the children they work with?
To inform our project, we carried out a Delphi Consensus Survey to seek an answer to these (and many other) questions. The Delphi survey method is used across disciplines to reach a consensus on topics where there is little or no full agreement between stakeholders. This survey was completed by 132 participants (including researchers, speech and language therapists, and teachers) from 30 countries. Details about the methodology and the outcomes can be found in De Cat et al (under review). The preliminary report is available here.
Our project is also informed by a comprehensive review of existing questionnaires from the research literature. This revealed high variability across questionnaires and low comparability of the measures they yield. For further detail, see Kascelan et al (2021).