... difficult question to answer because it is almost impossible to ascertain whether someone's actions are due to genes or environment. One method used to try and determine whether genes are the most important factor are with identical twin studies. If two monozygotic twins have the same characteristics as each other then it suggests that genes are causing this effect. There are however flaws with this reasoning as twins generally experience the same environment e.g. parents, friends, school etc so it could be argued that the similarities are down to this. A perfect study would be identical twins separated at birth who have experienced completely different environments. Unfortunately this case study is hard to come by and so no real proof can be gained from this. Pavlov was a staunch behaviourist believing that responses can be conditioned. Pavlov gave an example of behaviour being learnt in his study on dogs. ...

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