1. Ziehen opposed Wundt and his theory of voluntary Apperceptionism

2. Wundt advocated the strong relation between psychology and philosophy.

3. 18 Pastor Wundt, the shepherd of the Columbus church, was a sincere and ardent Christian, but his bigotry and hard-and-fast orthodoxy made him intolerant .

4. Psychological Behaviourism is primarily a claim about the correct methodology of a scientific psychology, and arose in the early part of the twentieth century as a reaction to the 'introspective' psychology of Wundt, James and Titchener.