title: Understanding behavioural clusters: Identifying differences between clusters of health behaviours on key constructs.
abstract: OBJECTIVE
  To uncover the rationale underlying the perceived distinction between clusters of health behaviours by identifying cognitive constructs that differentiate among them, and creating a 'cognitive profile' for each behavioural cluster. Thus, different determinants and characteristics of health behaviours (e.g. 'perceived behavioural control', 'impact on health', 'effort', 'non-health rewards', 'habit') were used to compare health behaviour meta-clusters (physical and psychosocial) and clusters (e.g. nutrition behaviours, substance abuse, medical practices).
  
  
  METHODS
  A sample of lay people (N = 1956) judged items representing behavioural clusters delineated in the Health Behaviour Taxonomy on 14 constructs.
  
  
  RESULTS
  Significant differences emerged between the physical and psychosocial meta-clusters, as well as among their sub-clusters. For example, physical behaviours were higher on 'perceived behavioural control' and 'impact on health' compared to psychosocial behaviours, and nutrition was perceived highest on 'effort' and 'non-health rewards' compared to the other clusters of the physical meta-cluster.
  
  
  CONCLUSIONS
  The findings increase our understanding of the logic underlying lay people's cognitive schema of health behaviour clusters. 'Cognitive profiles' that explain differences between the clusters were identified, which can be used to design health messages and interventions targeting multiple health behaviours.
authors.affiliation: a School of Psychological Sciences, The Gordon Faculty of Social Sciences , Tel Aviv University , Tel Aviv , Israel.
authors.forename: Gabriel
authors.initials: G
authors.lastname: Nudelman
authors.affiliation: a School of Psychological Sciences, The Gordon Faculty of Social Sciences , Tel Aviv University , Tel Aviv , Israel.
authors.forename: Shoshana
authors.initials: S
authors.lastname: Shiloh
mesh_terms: D000328:Adult; D016000:Cluster Analysis; D005260:Female; D015438:Health Behavior; D006801:Humans; D008297:Male; D008875:Middle Aged; D010465:Perception; D055815:Young Adult
keywords: behavioural clusters; cognitive construct; health behaviour taxonomy; health behaviours; physical; psychosocial