Four behavioral scientists in a colloquium at the University of Wisconsin discussed various aspects of language learning. Concerned primarily with pre-high-school pupils and addressing their remarks to language teachers, the scientists offered these proposals: (1) language teaching is more effective if taught in a natural setting, (2) environmental conditions affect language learning, (3) children learn their own language through idiomatic expressions, (4) the ability to learn a second language is innate, and (5) various factors such as attitude, prestige of language and culture, motivation, and psychological barriers can hinder or aid language learning. Participants included John Gumperz, Courtney Cazden, Wick Miller, and Wallace E. Lambert. (DS)