Conversationally, you can spot Thinkers easily by their slow pace and attention to accuracy. Ask a Director what time it is and you will be told the day of the week. Conversationally, Thinkers want to know and want to tell virtually every facet of a story. They speak relatively slowly and deliberately, pausing, if necessary without self-consciousness to search for the right word. Thinkers derive joy from speaking precisely and accurately.
Thinkers are time-disciplined, so be sensitive to their time.
They need details, so give them data. They are task-oriented, so don't expect to become their friend before doing business or working with them. That may develop later, but unlike Socializers it is not a prerequisite for Thinkers. Support Thinkers in their organized, thoughtful approach to problems and tasks. Be systematic, logical, well-prepared, and exact with them.