The Operation Procedure of Equivalence of Measuring Instruments in Cross-Cultural Researches: What Have We Learnt from the Positive Psychology? *

With the logical starting point of Combined Etic-Emic Approach, and the guidance of rules related to equivalence in cross-cultural researches, this paper effectively integrates the relevant rules about measur- ing tool translation and modification developed by World Health Organization (WHO), expands the basic steps of traditional method of back-translation, proposes a Trilateral Translation Procedure, and attains the reference materials from the perspectives of quantitive and qualitative, finally produces a measurement tool equivalence operation procedure of cross-cultural research including 7 steps.