The many minds problem: disclosure in dyadic versus group conversation.

What causes people to disclose their preferences or withhold them? Declare their love for each other or keep it a secret? Gossip with a coworker or bite one's tongue? We argue that to understand disclosure, we need to understand a critical and often overlooked aspect of human conversation: group size. Increasing the number of people in a conversation creates systematic challenges for speakers and listeners, a phenomenon we call the many minds problem. Here, we review the substantial implications that group size is likely to have on how much people disclose, what they disclose, and how they feel about it.