Template-type: ReDif-Paper 1.0 Author-Name: Borghans Lex Author-Name: Golsteyn Bart H.H. Author-Name: Heckman James Author-Name: Humphries John Eric Author-workplace-name: METEOR Title: Identification Problems in Personality Psychology Abstract: This paper discusses and illustrates identification problems in personality psychology. The measures used by psychologists to infer traits are based on behaviors, broadly defined. These behaviors are produced from multiple traits interacting with incentives in situations. In general, measures are determined by these multiple traits and do not identify any particular trait unless incentives and other traits are controlled for. Using two data sets, we show, as an example, that substantial portions of the variance in achievement test scores and grades, which are often used as measures of cognition, are explained by personality variables. Keywords: labour economics ; Series: Research Memoranda Creation-Date: 2011 Number: 025 File-URL: http://digitalarchive.maastrichtuniversity.nl/fedora/objects/guid:49fee157-6380-4007-bbfa-d12102886c93/datastreams/ASSET1/content File-Format: application/pdf File-Size: 329818 Handle: RePEc:unm:umamet:2011025