The Development of the Thai Psychological Capital Inventory: Version 44 Items
Sucheera Phattharayuttawat PhD1, Haruetaitip Tuntatead MSc1, Natchaphon Auampradit MSc1, Vichai Manussirivithaya MD2, Thienchai Ngamthipwatthana MD1
Affiliation : 1 Department of Psychiatry, Faculty of Medicine Siriraj Hospital University, Bangkok, Thailand 2 Naval Medical Department Royal Thai Navy, Bangkok, Thailand
Objective : The present study aimed to develop the Thai Psychological Capital Inventory as the standard assessment for Thai
people by studying its validity and reliability.
Materials and Methods : The research process was conducted in 2 processes; (1) Document study: the process of gathering
essential information to create the conceptual framework. The Thai Psychological Capital Inventory was developed in this
process (2) Field study: the process of collecting data from the sample population: Thai people age between 12 to 87 years
old. In this study, the data was collected from 2,855 with voluntarily acceptance of consent from.
Results : The results revealed that The Thai Psychological Capital Inventory consisted of 44 items for assessing 4 state-like
components of Psychological Capital; hope, self-efficacy, resilience and optimism. The research instrument was validated by
5 experts: content validity and item objective congruence. The exploratory factor analysis fitted the pooled Thai Psychological
Capital items by a principal component analysis, followed by a series of Varimax rotations and item analysis method that
were performed. The reliability coefficient of total Thai-Psychological Capital Inventory was 0.98.
Conclusion : The research showed that The Thai-Psychological Capital Inventory was good psychometric properties and
suitable for Thai people.
Keywords : Thai-Psychological Capital Inventory, Thai PsyCap
