Original Research

Examining the construct validity of the Basic Traits Inventory and the Ten-Item Personality Inventory in the South African context

Samantha A. Metzer, Gideon P. de Bruin, Byron G. Adams
SA Journal of Industrial Psychology | Vol 40, No 1 | a1005 | DOI: https://doi.org/10.4102/sajip.v40i1.1005 | © 2014 Samantha A. Metzer, Gideon P. de Bruin, Byron G. Adams | This work is licensed under CC Attribution 4.0
Submitted: 25 July 2011 | Published: 27 August 2014

About the author(s)

Samantha A. Metzer, Department of Industrial Psychology and People Management, University of Johannesburg, South Africa
Gideon P. de Bruin, Department of Industrial Psychology and People Management, University of Johannesburg, South Africa
Byron G. Adams, Department of Industrial Psychology and People Management, University of Johannesburg, South Africa


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Abstract

Orientation: As there has recently been a need for researchers to consider shorter personality measures, we compared the construct validity of a longer and a shorter personality measure in the South African context.

Research purpose: The main purpose of this study was to examine the discriminant and convergent validity of two personality measures that measure the big five personality factors: the longer Basic Traits Inventory (BTI) and the shorter Ten-Item Personality Inventory (TIPI).

Motivation for the study: Researchers have indicated a need for shorter personality measures, such as the TIPI, to assess personality dimensions. This study assessed the validity of the shorter measure in comparison with the BTI, which is considered cross-culturally valid in the South African context.

Research approach, design and method: This study used a quantitative research design. Both personality measures were administered manually to a convenience sample of student participants (n = 662), and data were analysed through factor analysis utilising oblique rotation for all items.

Main findings: The main findings indicate that, although the construct validity of both measures was satisfactory, the TIPI yielded unsatisfactory reliability.

Practical/managerial implications: The BTI is a more reliable measure than the TIPI, which should only be used when time is limited.

Contribution/value-add: In addition to providing insight into how the length of an assessment impacts on the reliability of a measure, this study further reinforces the use of the basic traits inventory as a measure that reliably measures personality in South Africa.


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