“…Interventions that have manipulated mastery experience (i.e., prompting successful behaviour practice) and vicarious experience (i.e., observing a model performing the behaviour) have been shown to produce high levels of self‐efficacy, as well as providing feedback on past or others’ performance (Ashford et al ., ; Luszczynska & Schwarzer, ). Also, using storybook techniques that embed strategies that map onto parents’ self‐efficacy have been shown to improve parental self‐efficacy towards child toothbrushing behaviours (O'Malley et al ., ). In addition, given social support is important for parental health behaviours (Hamilton & White, , ) and has been shown to buffer the effect of low self‐efficacy (Hamilton, Warner, & Schwarzer, ; Zhou, Gan, Hamilton, & Schwarzer, ), providing support to parents (e.g., providing encouragement, giving information) may help to facilitate action.…”