Let people work at their own pace, in their own way

Some people need regular distractions (music, conversation, etc...) to work effectively. Others need silence and long periods of uninterrupted time. Recognize that people are different, and they need different things to allow them to be creative.

If you manage someone who has different work patterns than you (for example, you're always heads down and they always appear to be talking to someone), don't assume that means they aren't getting anything done. Instead, look at their work product. Do they produce as much as their peers? Is it of the same quality? That's a better measure of their work.

That said, if they happen to be an unwelcome distraction to their peers (because their the one always talking while everyone else is trying to be heads down), you may need to address that.