← Search Journal of Applied Psychology 1930 An empirical study of the effects of grouping data in calculation of R by the Pearson products moment method. A. R. Lauer DOI10.1037/h0070475 Sources semanticscholar openalex Cite APA 7 MLA 9 Chicago (author–date) Harvard Elsevier Harvard (JFE, JBF…) The Accounting Review Academy of Management American Marketing Association INFORMS (Management Science) Copy citation Copied ✓