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In this work, an integrative theoretical structure for the propensity to trust (PTT) is derived from literature. In an online study (N = 669), the validity of the structure was assessed and compared in two domains: propensity to trust in humans (PTT-H) and propensity to trust in automated technology (PTT-A). Based on this, an economic scale to measure PTT-A was derived and its psychometric quality was explored based on the first and an additional second study. The observed correlational pattern to basic personality traits supports the convergent validity of PTT-A. Moreover, discriminative predictive validity of PTT-A over PTT-H was supported by its higher relationships to technology-related outcomes. Additionally, incremental validity of PTT-A over basic personality traits was supported. Finally, the internal validity of the scale was replicated in an independent sample and re-test reliability was established. The findings support the added value of integrating PTT-A in research on the interaction with automated technology.
Scholz et al. (Wed,) studied this question.