title: [Therapy Process Questionnaire (TPQ) - a combined explorative and confirmatory factor analysis and psychometric properties].
abstract: OBJECTIVE
  This contribution looks at the factorial structure of the Therapy Process Questionnaire (TPQ), which is used for daily self-ratings of patients tested by internet-based ambulatory assessment devices.
  
  
  METHODS
  A combined explorative and confirmatory factor analysis of the TPQ. The time-series data were generated by 149 patients treated in an inpatient setting.
  
  
  RESULTS
  23 out of 42 items included in the explorative version of the TPQ are represented onto five factors, which were identified by a first explorative factor analysis and then validated by a confirmative factor analysis. We report on the psychometric data of the subscales: internal consistency (Cronbach's α), mean of item-intercorrelation, and mean of item discrimination indices.
  
  
  CONCLUSIONS
  The TPQ is useful for a high-frequency and equidistant (daily) assessment of psychotherapeutic change processes.
authors.affiliation: Institut für Synergetik und Psychotherapieforschung der Paracelsus Medizinischen Privatuniversität, A-5020 Salzburg, Germany. guenter.schiepek@ccsys.de
authors.forename: Günter
authors.initials: G
authors.lastname: Schiepek
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Aichhorn
authors.forename: Guido
authors.initials: G
authors.lastname: Strunk
mesh_terms: D000328:Adult; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D020407:Internet; D008297:Male; D019964:Mood Disorders / Q000523:psychology / Q000628:therapy*; D010043:Outcome and Process Assessment, Health Care / Q000706:statistics & numerical data*; D010343:Patient Admission; D010554:Personality Disorders / Q000523:psychology / Q000628:therapy*; D011594:Psychometrics / Q000706:statistics & numerical data; D011613:Psychotherapy; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires