John Schumann developed an acculturation model for second language acquisition. The model proposes that L2 learning is dependent on how well learners acculturate to the target language culture. Schumann studied a man named Alberto who lived in Cambridge, England for six years but did not improve his English because he primarily socialized with other people from his native Costa Rica. Schumann argued that the degree of social and psychological distance between a learner and the target language culture influences acculturation. There are eight social factors and four psychological factors that determine this distance and impact second language acquisition according to the model.