“…Mexican-heritage youth are historically found to hold strong cultural values of interdependence and familism, making the current study sample apt for probing developmental questions about family experiences (Germ an, Gonzales, & Dumka, 2009;Rodriguez, Mira, Paez, & Myers, 2007). At the same time, the rates of family demands among the sample's Mexican-heritage youth were similar to that recorded in other studies with ethnically diverse samples of similarly aged adolescents (e.g., Chiang et al, 2016;Levine, Hoffer, & Chen, 2017), suggesting that the experience of family demands, and perhaps associated reactivity, is common among adolescents of diverse backgrounds. As such, our findings on age and sex differences in daily psychological reactivity, stability of reactivity within adolescence, and the discrete nature of reactivity for females may point to a universal process and generalize to samples of non-Mexican origin adolescents.…”