Jacob Kounin's Classroom Management Research.

Jacob Kounin (1912–1995) was an American education researcher and psychologist who studied classroom management techniques in the mid-1900s. Jacob Kounin’s classroom management research is still considered to be some of the most important research done in the field. Some researchers still cite Kounin’s publications and base parts of their own research on his. In addition, some of Kounin’s unique concepts—such as with-it-ness and overlapping—are still important aspects of classroom management theories. One of Kounin’s major innovations in the field was that he asserted that teachers made the most difference in their classroom management by preventing negative behavior in the classroom rather than by addressing negative behavior that already happened.