Aliyah Morgenstern, PhD, is Professor of English linguistics and language acquisition at Sorbonne Nouvelle University. Her research is focused on multimodal interaction and language development, using ethnographic methods to capture ecological data. Dr. Morgenstern's current research projects intend to retrace children's pathways into multimodal language acquisition in a scaffolding interactional environment. She also works on typological and cultural differences in multimodal adult-child and adult-adult interactions in French, English, Russian, German, and French Sign Language. Dr. Morgenstern uses a plurisemiotic, multi-linguistic level approach, and a combination of quantitative and qualitative analyses.