← Search Journal of Applied Psychology 1974 Checking groups of letters. Ian Gordon1; Moira Amos 1 Phillips Exeter Academy DOI10.1037/h0036541 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 ✓