Several other studies have found that disadvantaged children's achievement is raised when they attend preschool programs with more advantaged peers (Schechter & Bye, 2007; Sylva, Melhuish, Sammons, Siraj Blatchford, & Taggart, 2004).
Cross-sectional studies have found that disadvantaged neighbourhoods have reduced access to healthy food options and parents report fewer safe parks and playgrounds [ 6, 31, 32].
We need to mention that socioeconomic factors may affect the impact on OHRQoL perception; moreover, various studies have found that socioeconomically disadvantaged people have higher risks of disease and suffer from worse health conditions [ 9, 11, 26, 29, 30].
As other studies have found, smokers who were more disadvantaged were less likely to be successful in their quit attempt than more affluent groups, even after accessing cessation services.
Previous studies have found that Blacks and disadvantaged groups are more likely to live in areas with inadequate access to healthy foods directly affecting their health [ 24].
Several studies have found that some socioeconomically disadvantaged groups and immigrants have strong internal social networks that foster social cohesion and fast recovery from disasters (Chamlee-Wright and Storr 2009; Klinenberg 2002; Li et al. 2010).
Studies have found gains for non-disadvantaged students from universal pre-K in the United States (Gormley et al., 2008; Wong, Cook, Barnett, & Jung, 2008).
Studies have found that American students are disproportionately disadvantaged, compared with those of high-performing nations on international tests.
Second, neither religious leaders nor practicing politicians nor government employees have found the levers that actually make disadvantaged families more durable or functional.
Social scientists have found that moving out of disadvantaged neighborhoods can have advantages for children, like sparking upwardly mobility and increasing socioeconomic opportunities.
