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Lund Research. Criterion Validity, 2012. https://dissertation.laerd.com/criterion-validity-concurrent-and-predictive-validity.php
Trochim, W.M. Convergent & Discriminant Validity. Research Methods Knowledge Base, 2006. https://www.socialresearchmethods.net/kb/convdisc.php
and they are typed down in instruction file
please have understand all terms and write what you understand
in youtube many lectures about these terms and example that give you clear understanding
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