Limitations of Wundt and introspection:

• 1.relies on non-observable responses. Unable to comment on unconscious factors relating to their behaviour which limits validity.
• 2. unreliable method of investigation as participants reports to the same stimulus were different from trial to trial.
• 3.data provided was subjective so it became difficult to establish general principles. Not reliably reproduced by other researchers.
• 4.could not be used to study a number of different aspects of human behaviour such as children (limited vocabulary etc etc) as well as a higher mental process such as emotion.
• 5.greater contributions than Wundt by early behaviourists (Pavlov and skinner for example) they produced reliable finding in experiments on animal behaviour that could be generalised to human beings- much more in keeping with scientific approach.