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...

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...

We investigate the relation between peer group composition and language improvement in language classes for adults. Using unique survey data of migrants participating in an intensive language course in Germany, we found that the age and skill composition of groups is related to differences in...