“…Adolescents who perceived an activity to be more challenging and requiring more skills, and simultaneously felt more positive affect and more effortless attention also experienced higher levels of optimal experience by feeling more involved, more in control, more satisfied, and perceiving time as passing more quickly than usual, confirming hypotheses 1, 2, and 4. These findings are in line with our expectations and with previous research using ESM, in which perceiving higher challenges/higher skills, feeling positive emotions, and being in an effortless state of attention are related to experiencing a flow state (Asakawa, ; Csikszentmihalyi & Nakamura, ; Fong et al., ). It is important to note that our study provides valuable additional information by showing that these associations were present in adolescents’ overall experience, as well as in their momentary experience, evidencing between‐person and intraindividual differences, respectively.…”