帮下文献，赚金币

   麻烦帮忙下载以下文献，报酬2金币，谢谢！
1. Arbitary metrics: implications for identifying evidence-based treatments.   American Psychologist,
2. The continued search for nonarbitrary metrics in psychology.    American Psychologist,

3. Evaluating the cutoff score of the advanced practice nurse certification examination in Korea
4. Fit Indices for Measurement Invariance Tests in the Thurstonian IRT Model

已解决，不需要麻烦各位了。谢谢。