Cross‐validation and response sets in repeated use of mood questionnaires

Two questions concerning the repeated use of mood questionnaires on the same subjects were examined using the STAI, the MACCL and the Lorr et al. mood scales. Firstly, “are corresponding moods and mood changes correlated across questionnaires?”, and secondly, “o response sets affect the changes in responses’. Both within‐ and between‐subjects designs were used. The results suggest that the corresponding mood measures do change in parallel, giving evidence of validity, especially for anxiety measures. Only the Lorr et al. scores were affected by response sets and this effect was reduced in a within‐subjects design.