title: Health in young people: social inhibition and negative affect and their relationship with self-reported somatic complaints.
abstract: OBJECTIVE
  It was investigated whether the combination of negative affect and social inhibition (personality Type D) is positively associated with somatic complaints in pre- and early adolescents. Moreover, an analysis of stability was made.
  
  
  METHODS
  Data were collected twice, with an 18-month time interval, using questionnaires (N=668 children, M initial age=10.3, SD =.70). Individuals scoring above the median on social inhibition and negative affect were classified as Type D. These individuals had more somatic complaints than individuals scoring above the median on social inhibition or negative affect. Individuals with below median scores on social inhibition and negative affect had the lowest level of somatic complaints.
  
  
  RESULTS
  The overall stability of the characteristics was moderate and most individuals did not show significant change on the two variables.
  
  
  CONCLUSIONS
  Because the Type D classification was nevertheless not very stable, a different way of defining Type D is proposed. The social inhibition/negative affect combination indicates an elevated risk for self-reported somatic complaints in youth.
authors.affiliation: Department of Developmental Psychology, Leiden University-Institute for Psychological Research, 2300 RB Leiden, The Netherlands. FJellesma@FSW.leidenuniv.nl
authors.forename: Francine C
authors.initials: FC
authors.lastname: Jellesma
mesh_terms: D000293:Adolescent; D000339:Affect; D002648:Child; D006801:Humans; D008137:Longitudinal Studies; D008960:Models, Psychological; D015999:Multivariate Analysis; D009426:Netherlands; D010551:Personality; D010552:Personality Assessment; D011602:Psychophysiologic Disorders / Q000523:psychology*; D015203:Reproducibility of Results; D012307:Risk Factors; D012919:Social Behavior