Abstract
Large language models (LLMs) are rapidly reshaping workplace communication, yet whether AI-assisted writing changes how recipients actually behave, and through what channel, remains unknown. In this randomized crossover field experiment, 121 employees across six companies sent work emails under three conditions over three weeks: unaided writing, GPT-5 rewriting in a playful tone, and GPT-5 rewriting in a professional tone. Across 16,880 emails, playful editing increased emotional positivity (B=+0.068, p < 0.05).
Findings
The experiment demonstrated that emails using a playful tone triggered higher emotional positivity among recipients, potentially leading to increased engagement and interaction rates. This finding offers a new perspective on workplace communication, highlighting the impact of language style on interpersonal exchanges.
Conclusion
The results of this study emphasize the role of AI in enhancing workplace communication, particularly regarding tone selection. Future research could further explore the effects of different tones on various types of recipients.
Blogger's Review: This study reveals the potential of AI in workplace communication, particularly in enhancing engagement through tone adjustments in emails. It provides valuable insights into how AI can influence interpersonal communication and offers practical advice for businesses utilizing AI tools.