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  • 2022 (xsd:gyear)
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  • 2022 (xsd:gyear)
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  • 10.1186/s42409-021-00027-6 ()
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  • The Optimism–Pessimism Short Scale–2 (SOP2) (xsd:string)
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  • GESIS-GRIS (xsd:string)
  • In Measurement Instruments for the Social Sciences, 4, 1, 2022 (xsd:string)
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