In the present symposium, we plan to bring together different perspectives of how language influences goal-directed performance in mostly language unrelated tasks. Language influences are present either because of instructions, automatic reliance on or because of individual preferences. The contributors to this symposium will present work investigating language(s) as an instructional tool, language as help for or hindrance of cognitive flexibility, language(s) as performance-regulating tool in single subject and co-agents’ settings and address measurement of inner speech and its impact on basic cognitive performance. Given the recently revoked interest in the connection
between language, cognition and performance, this symposium aims at bringing together different research endeavours and stipulate discussions and cooperations among involved researchers.