Hua DONG,Tongji University Descriptive Study I (DS Il) The intention is to make the description detailed enough to determine which factor(s)should be addressed to improve task clarification as effectively and efficiently as possible. Ref:Blessing Chakrabarti 2011Descriptive Study I (DS II) The intention is to make the description detailed enough to determine which factor(s) should be addressed to improve task clarification as effectively and efficiently as possible. Ref: Blessing & Chakrabarti 2011 ©Hua DONG, Tongji University