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. Author manuscript; available in PMC: 2016 Apr 7.
Published in final edited form as: J Abnorm Psychol. 2016 Apr;125(3):356–368. doi: 10.1037/abn0000132

Figure 1. Summary of Potential Results of Co-Twin Control Analysis.

Figure 1

Scenario A would indicate that the association between weight conscious peer groups and disordered eating are due completely to socialization processes, as there are significant associations on the individual-level and within discordant MZ and DZ twin pairs. Scenario B would indicate genetic selection effects only, as there is still an association for DZ twins who share less genetic material (approximately 50%) than MZ twins (approximately 100%). Scenario C would suggest genetic and/or shared environment selection effects, since when controlling for these types of influences, associations are non-significant or reduced in magnitude.