Why the group chat never decides

Someone asks "who's in for Sunday?" Forty minutes later there are eleven replies, three memes, a voice note, and still no plan. Nobody is being difficult. The group chat is built in a way that makes deciding hard, and psychology has known why for more than fifty years.

Everyone assumes someone else will answer

In 1968, John Darley and Bibb Latané ran one of the best-known experiments in social psychology. Students talked over an intercom, each alone in a booth, believing they were in a group of two, three or six. Partway through, one "participant" (a recording) appeared to have a seizure.

When students thought they were the only one listening, 85% left their booth to get help. When they thought one other person could hear, that fell to 62%. When they thought four others could hear, it fell to 31%. Same emergency, same people. The only thing that changed was how many others they believed could step in.

Darley and Latané called it diffusion of responsibility: the more people who could act, the less each one feels it's their job. A group chat about Sunday is not an emergency, but the mechanism is the same. A question asked to fifteen people is, to each of them, a question someone else will probably answer.

Too many options, nobody picks

The second problem shows up the moment someone does reply. "Sunday works, or Saturday? Or we could do the place in Melville? Or braai at mine?" Every suggestion is reasonable. Together they stall the conversation.

In 2000, Sheena Iyengar and Mark Lepper set up a tasting stand in a supermarket. Sometimes it offered 24 jams, sometimes 6. The big display drew more people in (60% of passers-by stopped, against 40%), but only 3% of them went on to buy a jar. At the small display, 30% did.

It's worth being honest about this one: later researchers found that "choice overload" doesn't happen every time. A 2010 meta-analysis of 50 experiments by Scheibehenne, Greifeneder and Todd found the average effect was close to zero, with big effects in some situations and none in others. It tends to bite when options are hard to compare and nobody has a clear preference. That describes most group chats pretty well.

What actually helps

Both findings point to the same fixes:

• Make it one concrete proposal. Not "anyone keen for something this weekend?" but "5-a-side, Sunday 14:00, Green Point. In?" One option, easy to answer.
• Ask each person, not the room. Diffusion of responsibility shrinks when it's obvious who hasn't answered. A list of names with a tick or a blank next to each one does more than another "guys??".
• Decide in advance what counts as on. "If five of us say yes, it's happening" turns a vague conversation into a count everyone can see.

That last one is the whole idea behind Quorum. You propose one plan with a time and place, everyone votes yes or no, you can see who you're still waiting on, and once enough people say yes, the plan locks in. The group chat is great for memes. It was never great at deciding.

Sources

• Darley, J. M., & Latané, B. (1968). Bystander intervention in emergencies: Diffusion of responsibility. Journal of Personality and Social Psychology, 8(4), 377–383.
• Iyengar, S. S., & Lepper, M. R. (2000). When choice is demotivating: Can one desire too much of a good thing? Journal of Personality and Social Psychology, 79(6), 995–1006.
• Scheibehenne, B., Greifeneder, R., & Todd, P. M. (2010). Can there ever be too many options? A meta-analytic review of choice overload. Journal of Consumer Research, 37(3), 409–425.