Journal Intelligence--Special Issue on the Flynn Effect

This study examined the Flynn effect (FE; i.e., the rise in IQ scoresover time) in Estonia using the Estonian version of the NationalIntelligence Tests (NIT; Haggerty, Terman, Thorndike, Whipple & Yerkes,1919; National Research Council, 1920). Using secondary data from twocohorts (1934, n = 890 and 2006, n = 913) of students, we analyzed theNIT's subtests using item response theory (IRT). For each subtest, wefirst examined invariance in all the items and then linked the latentvariable (theta) scores between the two cohorts using the invariantitems. The results showed that there was a FE in theta for all subtestsexcept one, although there was much variability in the FE magnitude,ranging from an effect size of 0.24 (3.60 IQ points) to 1.05 (15.75 IQpoints). In addition, this study showed there was a decrease in thevariability of theta for all the subtests, although only two of thesubtests showed large decreases (approximately .50 standard deviations).Last, the subtests' precision of measuring theta was very similar atboth time points. (C) 2013 Elsevier Inc. All rights reserved.========================================================================*Pages: 780-790 (Article)*View Full Record: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=CCC&DestLinkType=FullRecord;KeyUT=CCC:000327807300005*Order Full Text [ ]Title:Changes in test-taking patterns over timeAuthors:Must, O; Must, ASource:*INTELLIGENCE*...
Source: Intelligent Insights on Intelligence Theories and Tests (aka IQ's Corner) - Category: Neurologists Source Type: blogs