Tim Koelkebeck's research while affiliated with University of California, San Francisco and other places

Publications (3)

Article
Full-text available
Values are a central personality construct and the importance of studying them has been well established. To encourage researchers to integrate measures of values into their studies, brief and ultrabrief instruments were developed to recapture the 10 values measured by the 40-item Portrait Values Questionnaire (PVQ; Schwartz, 2003 Schwartz, S. H. (...
Article
A family of automated analyses known as Genetic Algorithms (GAs) have recently been applied to abbreviating scales in the psychological literature. This method allows long scales to be abbreviated in a matter of minutes, representing a huge potential savings of time over standard rational methods, which are based on psychometric analyses. To compar...

Citations

... Hence, the two value dimensions measure a preference for Openness over Conservation and for Self-Transcendence over Self-Enhancement. Although a popular scale in values research, it lacks proper validation and psychometric properties are seldom given in previous research (e.g., mostly western samples, values seem to overlap/difficult to form, see Sandy et al., 2017). Further, research has shown the scale to be measurement invariant across 15 European nations only regarding openness and self-enhancement (Cieciuch et al., 2018). ...
... These so-called meta-heuristics are particularly useful because the psychometric criteria can only be computed in combination with other items, with the aim to improve the quality of the scale as a whole (Olaru and Danner, 2021). Recent findings in scale development or adaptation suggest that algorithmic approaches perform at least as well as traditional approaches (Sandy et al., 2014) or even outperform them (Schroeders et al., 2016;Olaru and Danner, 2021). ...