... is extremely unlikely to find a list existing of teenage fathers who have committed deviant acts. It is also a rare possibility that one may use a technique such as the Snowball Technique as it is a rather sensitive subject and is improbable that one person will refer you to others in a similar situation as his. The best possible way if therefore Multi-Phase Sampling which involves taking 'a sample of the sample'. This would mean that prior to your research similar research was carried out by another researcher & rather than re-question the whole sample one would simply choose a smaller, more selective group to represent the target population. This way one would have most of the information prepared for them and you can easily re-interview the people interviewed in the previous research. Considering the circumstances, Participant Observation is not possible, for really and truly it will not help us ...

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