Punctuation within a sentence.
Please give suggestions on revision.
See example:
After classifying the participants, this researcher sought to determine if antisocial behaviors were developed as a result of persistent poverty, and therefore supporting the null-hypothesis.
1 answer 
After classifying the participants, the researcher sought to determine if antisocial behaviors had been developed as a result of persistent poverty, and therefore supported the null-hypothesis.
After classifying the participants, the researcher sought to determine if antisocial behaviors had been developed as a result of persistent poverty and, therefore, supported the null-hypothesis.
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answered Oct 17 '12 at 10:00
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