Testing must have the quality of validity and reliability so as to have the objective evaluation on learners' ability and check the teaching result effectively.

Objective: to study the effect of psoriasis on the patients life quality and to evaluate the reliability of dermatology life quality index (DLQI) as a new severity and therapeutic index of psoriasis.

Objective To evaluate the reliability and structure validity of the Chinese quality of life instruments for cancer patients-head and neck cancer (QLICP-HN) by multi-factor analysis.