The Twenty Item Values Inventory (TwIVI) in Portuguese Adults: Factorial Structure, Internal Consistency, and...

Area of Science:

• Psychology
• Social Psychology

Background:

• The Schwartz Model of Basic Values is a key framework for understanding universal human values.
• Previous brief versions of value inventories have faced challenges with construct validity and rigorous statistical testing.

Purpose of the Study:

• To conduct the first confirmatory factor analysis (CFA) of the Twenty Item Values Inventory (TwIVI) factorial structure.
• To examine the reliability and validity of the TwIVI in a Portuguese adult sample.
• To assess the TwIVI's ability to capture the theorized quasi-circumplex structure, cross-cultural gender differences, and value hierarchies.

Main Methods:

• Confirmatory Factor Analysis (CFA) was applied to a Portuguese sample (n=524).
• Two separate models were tested, focusing on Growth and Self-protective value dimensions.
• Criterion-related validity was established by correlating values with political identity and social/economic issues.

Main Results:

• The factorial structure of the TwIVI was successfully examined via CFA.
• Evidence for the reliability and construct validity of the TwIVI was provided.
• The TwIVI demonstrated its capacity to capture value structures, gender differences, and hierarchical importance, correlating with political and social variables.

Conclusions:

• The Twenty Item Values Inventory (TwIVI) is a reliable and valid measure for assessing basic human values.
• The study supports the use of the TwIVI for cross-cultural research on value structures and their correlates.
• The findings confirm the utility of the TwIVI in understanding the relationship between values and broader social and political identities.