Across two countries and two languages, this research examined the multidimensional associations of suicide behaviors (i.e., life-time attempts, life-time communication of intent to others, life-time self-harming, life-time suicide notes, and current suicide ideation) and empirically relevant psychological risk factors (i.e., different facets of mental pain, perceived burdensomeness, thwarted belongingness, and acquired capability), controlling for depressive symptoms. For the Portuguese sample, two underlying dimensions emerged: an ideation dimension and a behavioral dimension, and for the Canadian sample, three dimensions emerged: an ideation dimension and two behavioral dimensions that can be viewed as a splitting of the Portuguese second dimension. Results highlight possible cultural differences between the two countries and that suicide behaviors should be viewed as a multidimensional phenomenon not as a one-dimensional continuum.

The aims of the present study were to compare a sample of individuals exposed to suicide in their families with a control group, on suicidal ideation, and to test possible potentiating effects for unmet interpersonal needs. Three hundred eighty-six young Portuguese adults participated. Two groups were defined: a group exposed to suicide in the family (n = 38) and a control group (n = 335). Groups differed significantly on suicidal ideation, on depressive symptoms, and on perceived burdensomeness and tended to differ on thwarted belongingness. Results from a hierarchical multiple regression analysis demonstrated that having lost a family member by suicide and perceived burdensomeness each provided a significant unique contribution to explaining variance in suicidal ideation when controlling for levels of depressive symptoms and having had a psychiatric diagnosis. The interaction between group membership and perceived burdensomeness provided a further enhancement to the statistical prediction of suicidal ideation.

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The development of psychometrically sound measures to assess mental pain are important because research has consistently demonstrated a robust relationship to suicide risk. The current research evaluated the Three-Dimensional Psychological Pain Scale (TDPPS) structure, a suicide-relevant measure intended to articulate pain into affective, cognitive, and behavioral facets. As the first Western study to evaluate the TDPPS structure with non-Chinese respondents, six samples comprising 1,627 adults participated. Neither confirmatory factor analyses nor exploratory structural equation modeling supported the hypothesized three-dimensional structure of the TDPPS but, instead, identified two dimensions: pain escape and pain emotions. Scales based on these two dimensions demonstrated replicability in cross-validation and score internal consistency reliability. Furthermore, validity for scores on these two scales was confirmed through moderate associations with another pain measure and scales of suicidal behavior and depression. Findings extend knowledge of TDPPS’s structure of psychological pain and suggest a scale scoring revision.