“…When research combines all sexual minorities into one group, important heterogeneity may be masked. While a growing body of research has identifi ed health disparities among youths describing themselves as mostly heterosexual ( Corliss, Austin, Roberts, & Molnar, 2009 ;Homma, Chen, Poon, & Saewyc, 2011 ;Marshal et al, 2009 ), factors contributing to their greater smoking and how they may be similar to or different from other sexual minorities are poorly understood. Mostly heterosexual youth differ from other youth in their behavioral experiences and identity development ( Austin, Conron, Patel, & Freedner, 2007 ;Thompson & Morgan, 2008 ).…”