How much peer reviewed stuff about appropriate interpersonal interactions is there, really? And if it isn't peer reviewed, then there's almost no reason to think it is more likely to be true simply because someone printed it somewhere.
In short, cut some slack for a valuable contribution.
Thanks, both of you. I wish I had references for this, but this is based on my experience as a professional teacher. I have 10+ years experience, starting with martial arts in high school, then running a dance studio, and now designing and teaching classes on software security. I'm sure I read some of these items somewhere, but I can't recall where anymore.
Have you ever been in a discussion (in a class or a workshop) when another attendee delivered a monolog? It lasts for several minutes, drains the energy from the group, and gets the whole event off schedule.
As the meetup / workshop / class leader, it's your responsibility to address these time monopolizers and keep everything moving. This article will give you some tips on identifying when you should intervene, and on how to intervene politely.
Identifying Time Monopolizers
If one person is talking for an extended period, they are probably monopolizing the conversation. Here are some specific signs to look out for:
If only one of these items is true -- if the person is crossing multiple topics, but you and the class are engaged, for example -- then feel free to let them speak. But if two or more of these items are true, you should probably intervene. (See the next section for how to do that.)
If the event ends and you're not sure if someone was monopolizing the conversation, ask the quiet people how it went, and ask them if anyone in the group slowed the class down or monopolized the conversation. They might be too polite to bring the issue up, but once you ask directly, they'll let you know what's going on. Make sure to thank them for their honesty, and keep their feedback anonymous when you talk to the time monopolizer.
One note: While a monolog that covers multiple topics is usually bad, a discussion where multiple people cover multiple topics is usually good, even if it prevents you (the leader) from hitting all the topics you'd planned for the event. After all, most people show up at events to meet like-minded people and make new friends, not to cover each of the items on the handout.
But, do pay attention to the rest of the attendees: Are they engaged or checked out? Is this a discussion involving half the group, or a dialog between only two people? As the leader, are you interested in the discussion? If two people are having a dialog, and the rest of the group is checking out, it's your job to shut that dialog down, too.
How to Intervene
Politely. This is the key. As the leader of the event, any reprimand you give will be felt more deeply than a reprimand given by a peer.
Wait for the person to take a breath, then speak up. (If you don't get that chance after 20 seconds or so, raise your hand like you're stopping traffic, wait a second, then start speaking.) Say something like:
That's really interesting. I'm just going to pause you for a second so we can get back to the topic. Grab me afterward and we can discuss that some more.
Note that we started with praise ("That's really interesting.") Don't worry, they'll get the message. Then, without saying anything negative about the person or his statements, simply say that you need to get back on topic.
Also, avoid saying "but" here: "That's really interesting, but I'm going to pause you…" The "but" construction negates the first sentence, and could make it sound sarcastic.
Here are some other phrases you can try:
[Note: Please add to this list.]
What if you don't stop a monolog during the event, but realize afterward that you should have? That's just fine. The point isn't to have every event run perfectly, but rather, to make sure that no one repeatedly monopolizes the conversation month after month. Just talk to them afterward, and say something like:
I noticed you were speaking a lot during the event. I love how passionate you are about these topics. I have a favor, though: Some of the people are a little more shy and reserved than you are, and I want to make sure everyone gets a chance to speak. After all, if there are 10 people here, then ideally, each person would make about 10% of the remarks. Do you think you could talk a little less at the next meetup, to give everyone else more of a chance?
(Note: It's not actually important that everyone speak for the same amount of time, but it's a good way to explain what isn't working. Feel free to use your own judgement on how to help your particular time monopolizer understand what's not working.)
In all these interactions, make sure to smile and be friendly. Remember, he probably doesn't realize he was monopolizing the conversation. And keep in mind that no one adjusts instantly, and you might still need to jump in and direct the conversation at the next event, too.