This study calculates the selectional preference strength between transitive verbs and their co-occuring objects, and thereby in-vestigates how much they are co-related to each other in korean. the selectional preference sregth is automatically measured in a bottom-up way, and the outcomes are evaluated in comparison with a manually constructted resource that indicates which verb takes which class(es) of nouns as its dependents. the measurement offered by this study not only can be used to improve NLP applications, but also has a theoretic significance in that it can play a role as distributional evidence in the study of argument structure.