期刊
BRITISH JOURNAL OF HEALTH PSYCHOLOGY
卷 26, 期 3, 页码 807-824出版社
WILEY
DOI: 10.1111/bjhp.12504
关键词
automaticity; habit formation; multilevel model; nutrition; plan enactment; randomized controlled trial
The study found that linking nutrition behavior to a daily routine or specific time was equally effective for habit formation. Repeated plan enactment was identified as a key predictor for automaticity. Both routine-based and time-based cue planning interventions led to increases in automaticity and plan enactment.
Objectives Habit formation has been identified as one of the key determinants of behaviour change. To initiate habit formation, self-regulation interventions can support individuals to form a cue-behaviour plan and to repeatedly enact the plan in the same context. This randomized controlled trial aimed to model habit formation of an everyday nutrition behaviour and examined whether habit formation and plan enactment differ when individuals plan to enact their behaviour in response to a routine-based versus time-based cue. Design Following a baseline assessment, N = 192 adults (aged 18-77 years) were randomly assigned to a routine-based cue or a time-based cue planning intervention, in which they selected an everyday nutrition behaviour and linked it to a daily routine or a time cue. Methods Participants responded to daily questionnaires over 84 days assessing plan enactment and the behaviour's automaticity (as an indicator of habit formation). Multilevel models with days nested in participants were fitted. Results As indicated by asymptotic curves, it took a median of 59 days for participants who successfully formed habits to reach peak automaticity. Group-level analyses revealed that both routine-based and time-based cue planning led to increases in automaticity and plan enactment, but no between-condition differences were found. Repeated plan enactment was a key predictor for automaticity. Conclusions Linking one's nutrition behaviour to a daily routine or a specific time was similarly effective for habit formation. Interventions should encourage persons to repeatedly carry out their planned behaviour in response to the planned cue to facilitate habit formation.
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