We investigate the effect of peer group composition on language improvement in language classes for adults. Using unique survey data of migrants participating in an intensive language course in Germany, we find that the age and skill composition of groups affect skill acquisition as assessed by the teacher. Moreover, groups that are more heterogenuous in terms of regions of origin on average obtain improvements in language skills with a higher probability.

Sprietsma, Maresa and Lisa Pfeil (2015), Peer Effects in Language Training for Migrants, ZEW Discussion Paper No. 15-033, Mannheim. Download


Sprietsma, Maresa
Pfeil, Lisa


language skills, peer effects, migrants