Lovibond, S.H. & Lovibond, P.F. (1995). Manual for the Depression Anxiety Stress Scales (2nd. Ed.). Sydney: Psychology Foundation.
Scale Levels:
0, 1, 2, 3
Level Names (Eng):
Did not apply to me at all - NEVER., Applied to me to some degree, or some of the time - SOMETIMES., Applied to me to a considerable degree, or a good part of time - OFTEN., Applied to me very much, or most of the time - ALMOST ALWAYS