MethodsLiterature search timeframe: The references cited in the previous guidelines [1] are not repeated here, except for some relevant publications, and only the previous guidelines are cited instead. All publications published after the previous guidelines (i.e., from January 2004 to December 2014), have been considered for the first draft of this manuscript. Randomized controlled trials (RCTs), review articles, prospective studies and meta-analyses published in 2015 and 2016, during the revision process, have also been considered.Type of publications: Original papers, meta-analyses and reviews.

Although a higher level of psychological distress has been found in many studies of divorced compared with married individuals, explanations for this difference remain elusive. Three basic theoretical explanations have been proposed. Social role theory maintains that the role of being divorced is inherently more stressful than that of being married; crisis theory attributes the higher stress to role transitions and transient stressors of the disruption process, and social selection theory claims that the higher stress levels among the divorced result from the selection of people with poor mental health into divorce. Some empirical support is available for each of these approaches, but all three have not been tested simultaneously in a longitudinal study. This research empirically evaluates the efficacy of these theories in a pooled time-series analysis of a four-wave panel of married persons followed over 12 years. The pooledtime series random effects model was used to es-

No abstract

No abstract