Research topics

The BIVEM study, initiated in 2012, analyzes the effectiveness of language support in multilingual children who have received this support starting at ages 2 or 3, as well as whether a significant difference in the effectiveness of additive (child-directed) or integrative (teacher-directed) approaches to language support exists. More than 160 bilingual children from over 20 preschools (Kitas) in Berlin with either Russian or Turkish as their home language participate in the study. In the additive approach, the children receive language support from external personnel in small groups, while the integrative approach trains pre-school teachers to provide language support throughout the day. The control group consists of children who receive the language support already provided by their preschool. 

In particular, we investigate:

  • The impact of the age of onset and length of exposure to L2, as well as the impact of the home language on L2 development
  • The effectiveness of different approaches to language support
  • The impact of the age at which language support began
  • The differences between monolingual and bilingual children.




Land Berlin

Funding period



Prof. Dr. Manfred Krifka & PD Dr. Natalia Gagarina