INITIAL DATA ON THE RELIABILITY AND VALIDITY OF THE DEPRESSION,ANXIETY, STRESS SCALE (DEPRESSION, ANXIETY, STRESS SCALE – DASS)

Abstract

The beginning of a procedure for adaptation of the Depression, Anxiety, Stress
Scale in Bulgarian is presented. Initial psychometric data reveal good reliability and validity.
The methodology and the main theoretical concepts in the development of the scale are
described. The results of the statistical analysis reveal a good construct and convergent
validity and excellent internal consistency of both the individual subscales and the entire
Scale. The T-test for independent samples shows that the scales for depression, anxiety, stress
are sensitive to the measured characteristics in clinical and non-clinical samples, with the
mean values significantly higher in a clinical sample.