Development and validation of the working alliance inventory short form Thai client version

Abstract

ABSTRACT This study aims to validate instrumental qualities including reliabilities and construct validity of the short form Thai version of the Working Alliance Inventory (WAI-S). The instrument was developed using a three-step translation process. A sample consists of 102 clients who attended counselling sessions at a university in Thailand. The reliabilities of the Thai WAI-S were high. The confirmatory factor analysis found that both 1-dimension or 3-interrelated dimension models were equally fit and can be used to measure working alliance depending on the research objective.