Freiburg Personality Inventory FPI-R. Primary data from the standardization sample 2018.

Research Questions/Hypotheses:

Research Design:

Standardized Test Procedure; repeated measurements

Measurement Instruments/Apparatus:

The FPI-R with 138 items is evaluated according to 10 standard scales: life satisfaction, social orientation, achievement orientation, inhibition, excitability, aggressiveness, stress, physical complaints, health concerns, openness, furthermore with regard to the two secondary scales extraversion and emotionality in the sense of Eysenck.

The selection of items and scales of the FPI-R resulted from the authors’ own research projects and from the intention to develop a population-representative constructed and normed test of more general interest.

The first step of the test construction was hypothetical-deductive in order to work out suitable items for the selected concepts of personality theory;
in the second step, empirical-inductive and population-representative, test-statistical analyses followed in order to support the selection of items by item-, factor-, and cluster-analytical findings.

The empirical validity of the FPI-R test scores has been demonstrated by correlations with other self- and other-item ratings, with objective criteria, and with outpatient assessment data, among others. The most important recent publications on the validity of the FPI-R have been summarized in the 9th edition manual.

Data Collection Method:

Data collection in the presence of an experimenter

• Individual Administration
• Paper and Pencil

Other method, namely:

• Self-completion of the FPI-R questionnaire plus additional questions after the interview by the Institut für Demoskopie Allensbach (IfD), partly in the presence of the interviewer (76%), partly later with postal delivery of the completed questionnaire or collection by interviewer (24%).

Population:

3 representative population samples of approximately 1.200 persons each aged 16 years and older. Total N = 3.450

Survey Time Period:

3 representative data waves in the period June to November 2018

Sample:

Quota Sample

Gender Distribution:

51 % female participants
49 % male participants

Age Distribution: 16 – 95 years

Spatial Coverage (Country/Region/City): Germany/Area West/East, weighted West: 82%, East: 18%

Subject Recruitment:

Institute for Public Opinion Research Allensbach

Sample Size:

N = 3.450 German resident population from 16 years of age to old age

Return/Drop Out:

Response rate = 92%. 8% of the 3.753 persons contacted by the Institute for Public Opinion Research were not willing to complete the authors’ questionnaire directly or to return it by mail.