The determinants of business negotiations in three countries are investigated in a laboratory simulation. One hundred thirty-eight businesspeople from the United States, 68 from Mexico, and 148 from Canada (74 Anglophones and 74 Francophones) participated in a two-person, buyer-seller negotiation simulation. The negotiation styles of the Francophone Canadian and the Mexican businesspeople were found to be significantly different from both the American and Anglophone Canadian styles. © 1987.