Final answer:
Deutsch's study found that communication patterns are influenced by instruction type, with cooperative instructions leading to open communication and information sharing, and competitive instructions not fostering open communication and trust.
Step-by-step explanation:
Deutsch's study on competition and cooperation demonstrated that communication patterns indeed differed significantly depending on whether the subjects were given cooperative or competitive instructions. Students receiving cooperative instructions communicated more openly and were inclined to share information with one another. In contrast, competitive instructions did not lead to open communication and trust among participants.
While cooperation generally promotes open communication and information sharing, competition may lead to more closed and self-interested interactions. The influence of the instruction type on communication patterns is critical in understanding group dynamics in educational and professional settings. This insight also underscores the significant impact of environment and instructional framing on how people interact and work together.