“…Although there are sufficient data to show that an increase in price reduces tobacco consumption (Becker, Grossman, & Murphy, 1994;Gallus, Schiaffino, La Vecchia, Townsend, & Fernandez, 2006), decreases the prevalence of adult tobacco use (Farrelly, Bray, Pechacek, & Woolery, 2001;Kinh, Ross, Levy, Minh, & Ngoc, 2006) and increases the likelihood of smoking cessation (Chaloupka & Warner, 2000;Forster & Jones, 2001), existing evidence of a possibly different price effect on different socio-economic groups is less conclusive. Whereas most studies have found that tobacco use among lower-income populations and persons of low socio-economic position is more responsive to price (Brown, Platt, & Amos, 2014;Hill, Amos, Clifford, Platt, & Amos, 2014;Thomas et al, 2008), some studies have failed to observe any differences (Franks et al, 2007;Wasserman, Manning, Newhouse, & Winkler, 1991) and other studies suggest that persons with a higher educational level may be more sensitive to tobacco prices either because they get a significant reduction in cigarette consumption (Lee, Hwang, Ye, & Chen, 2004) or because they are more motivated to quit smoking (Ringel & Evans, 2001).…”