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The Optimism-Pessimism Short Scale-2 (SOP2): a comprehensive validation of the English-language adaptation [journal article]
Source: Measurement Instruments for the Social Sciences, 4 (2022). p.1-14
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Author(s): Nießen, Désirée; Groskurth, Katharina; Kemper, Christoph J.; Rammstedt, Beatrice; Lechner, Clemens
Source: Measurement Instruments for the Social Sciences, 4 (2022). p.1-14