Evaluate Farrington Unit 1


	Evaluate Farrington Unit 1
	Advantages Large sample used(411) males. Longitudinal study so good for seeing changes and development.	Disadvantages Only males were used so cant be generalised to women. Only used males from South London so can not be generalised to other areas. Risk factor of having APD were good but not 100% so there are more factors. Not all people with the risk factor will develop APD. Longitudinal study so people tend to drop out.
	Evaluation

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