https://phys.org/news/2018-06-percent-undocumented-mexican-immigrants-discrimination.html > Researchers found that interpersonal discrimination—which refers to direct perceived discrimination from interactions between individuals, such as verbal or non-verbal communication behaviors from an employer to an employee or store employee to a shopper—was associated with clinical levels of psychological distress even more so than having a history of trauma. > "Our study also found that undocumented Mexican immigrants between the ages of 18 to 25 who had a history of interpersonal discrimination for being undocumented were more likely to meet criteria for clinically significant psychological distress compared with their undocumented counterparts ages 26 to 45," Garcini said.