by Ratana Saipanish, Suwannee Putthisri, Soontaree Srikosai, Phuangphet Kaesornsamut, Pattaraporn Pandee, Thanavadee Prachason, Thiprawee Chattrattai Background The perception of internal resources influences mental well-being and unlocks the potential for personal growth. However, there is currently no tool that directly addresses perceptions of internal resources.
This cross-sectional psychometric study aimed to develop a tool for assessing personal perceptions of internal resources in a Thai context. Methods The Internal Resource Perception Scale (IRPS) was developed through a comprehensive literature review, a focus group interview, and the research team’s expertise.
Content validity was assessed by experts in inner growth and psychotherapy. A convenience sample of 514 Thai adults participated in an empirical examination of the scale.
Exploratory factor analysis (EFA) was used to determine the factor structure, and construct validity was examined using Spearman’s correlations between IRPS scores and other validated psychological measures. Results The scale content validity index (S-CVI) of the 42-item IRPS was .94, with item content validity index (I-CVI) values ranging from .80 to 1.00.
PLOS ONE (Medicine) published a clinical update in Research Highlights on 29 Apr 2026.
The item focuses on The development of the Internal Resource Perception Scale: Validity and reliability.
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