title: Type D assessment in patients with chronic heart failure and peripheral arterial disease: evaluation of the experimental DS(3) scale using item response theory.
abstract: Type D personality refers to a clustering of 2 stable personality traits, namely negative affectivity and social inhibition. Currently Type D is standardly assessed using the DS14. An experimental Type D personality scale, the DS((3)), was developed to examine an avenue for assessing Type D more efficiently. The DS((3)) differs from the DS14 in its use of a 3-point Likert scale to rate responses, use of all negatively worded items, and a rearranged presentation of items. This article examines the psychometric properties of this questionnaire by examining its dimensionality, item and scale properties, and cutoff scores to screen for Type D personality. Data from 2 clinical samples were analyzed using item response theory. The results suggest that the DS((3)) is a potentially suitable instrument for Type D assessment. It has high reliability, and Type D personality classification based on this scale corresponds well with the current standard Type D assessment based on the DS14.
authors.affiliation: Center of Research on Psychology in Somatic Diseases, Department of Medical Psychology and Neuropsychology, Tilburg University, The Netherlands.
authors.forename: Wilco H M
authors.initials: WH
authors.lastname: Emons
authors.forename: Floortje
authors.initials: F
authors.lastname: Mols
authors.forename: Aline
authors.initials: A
authors.lastname: Pelle
authors.forename: Kim G
authors.initials: KG
authors.lastname: Smolderen
authors.forename: Johan
authors.initials: J
authors.lastname: Denollet
mesh_terms: D000368:Aged; D003863:Depression / Q000523:psychology*; D005163:Factor Analysis, Statistical; D005260:Female; D006333:Heart Failure / Q000523:psychology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D058729:Peripheral Arterial Disease / Q000523:psychology*; D010551:Personality; D010552:Personality Assessment; D011594:Psychometrics; D015203:Reproducibility of Results; D057566:Self Report; D011795:Surveys and Questionnaires