“…Public health ACT-based interventions have also been shown to promote mental health in a variety of youth populations [ 62 , 63 , 64 , 65 , 66 , 67 , 68 ] using flexible modes of delivery: youth in the general population via group delivery [ 59 , 63 , 64 , 66 ], and university students via online delivery [ 65 , 67 , 68 ]. An advantage of psychological flexibility informed interventions is that they have been shown to cultivate skills that foster resilience in the context of health-related adversities, such as caregiving [ 61 ] and chronic disease (e.g., multiple sclerosis [ 69 ], diabetes [ 70 ], cancer [ 71 ]), and psychological flexibility has been shown to mediate the beneficial effects of these programs [ 67 ]. At a broader level, a whole family approach should guide the design of such interventions, given that parental illness impacts youth adjustment and family functioning in the context of complex reciprocal intimate family relations [ 29 ].…”