Task persistence refers to the ability to continue working on something even when faced with challenges or distractions. It means not giving up easily and staying focused until the task is completed. Full definition
Analyzing longitudinal datasets (N = 2,926 and N = 1,255) of African American and Latino American college students Brannon's research demonstrates that such efforts to affirm identity is related to benefits among members of negatively stereotyped groups including better problem solving, increased task persistence, higher GPAs, and more positive health and well - being outcomes. (sciencedaily.com)
Ignoring pain rather than allowing it to interfere with the task at hand, known as task persistence, was the only coping strategy employed by whites more than blacks. (sciencedaily.com)
In this 2014 study looking at food addiction, in 233 participants, they did find a relationship between food addiction and negative mood i.e. there was: «an inclination toward behaving irrationally while experiencing negative mood states (Negative Urgency) and low levels of task persistence (lack of Perseverance)» (everywomanover29.com)