title: Positive and negative mood trajectories and their relationship with work ability, self-rated health, and life satisfaction: a 13-year follow-up study.
abstract: OBJECTIVE
  To investigate the change trajectories of positive and negative moods and their relationship to work ability, self-rated health, and life satisfaction in a three-wave 13-year follow-up study.
  
  
  METHODS
  The data, consisting of Finnish firefighters (n = 360), were collected via questionnaires in 1996, 1999, and 2009.
  
  
  RESULTS
  Four distinct mood trajectories were identified by latent class growth modeling: (1) high positive, (2) high positive but decreasing, (3) moderately positive, and (4) high negative. The trajectory groups were differentially related to well-being. Members of the high positive trajectory had better well-being than members of other latent mood trajectories.
  
  
  CONCLUSIONS
  Different trajectories exist in positive and negative moods, and these trajectories are differentially related to well-being. Developing work environments in which a positive mood can flourish is beneficial in terms of better well-being among employees.
authors.affiliation: Finnish Institute of Occupational Health, Helsinki, Finland. auli.airila@ttl.fi
authors.forename: Auli
authors.initials: A
authors.lastname: Airila
authors.forename: Jari J
authors.initials: JJ
authors.lastname: Hakanen
authors.forename: Ritva
authors.initials: R
authors.lastname: Luukkonen
authors.forename: Sirpa
authors.initials: S
authors.lastname: Lusa
authors.forename: Anne
authors.initials: A
authors.lastname: Punakallio
mesh_terms: D000223:Adaptation, Psychological; D000328:Adult; D000339:Affect; D005221:Fatigue / Q000209:etiology / Q000523:psychology; D005387:Finland; D061388:Firefighters / Q000523:psychology*; D005500:Follow-Up Studies; D006304:Health Status; D006306:Health Surveys; D006801:Humans; D008603:Mental Health; D008875:Middle Aged; D016272:Occupational Health; D010549:Personal Satisfaction; D011590:Psychology, Industrial; D057566:Self Report; D011795:Surveys and Questionnaires; D013997:Time Factors