Norms and Sex Differences for the Standard Progressive Matrices in Libya

摘要: Results are reported for a standardization of the Standard Progressive Matrices in Libya. The sample consisted 1800 children, comprising 180 (90 boys and 90 girls) each year age 8-17 olds. test had high reliability adequate validity. Factor analysis revealed presence strong general factor interpreted as Spearman's g. Girls obtained significantly higher mean than at 10, while means ages 15 through 17. variability was generally greater among girls boys. In relation to British norms, IQ 82.7, which is reduced 78 if an adjustment made Flynn effect increase Britain 2 points per decade. younger Libyan children performed better older relative norms. Key Words: Intelligence; Matrices; Libya; Sex differences; Variability. Raven's (RPM, Raven, 1939; Raven et al., 2000) most widely used intelligence numerous countries throughout world. Several hundred studies that have summarized Lynn (2006). One reason popularity it non-verbal can therefore be applied cross-culturally, verbal tests more culture specific preclude cross-cultural comparisons. Another considered excellent g, present all cognitive tasks first identified by Spearman (1904) largely measure reasoning ability (e.g. Carroll, 1993; Jensen, 1998; McGrew & Flanagan, 1998). Although been administered many countries, few done North Africa. only this region normative data exist Egypt, Tunisia, Abdel-Khalek (1988) on Egyptian average 83. Normative Tunisia results come from adults carried out 2001.The size 509 score 47 given 50th percentile 20 olds, together with 54 olds 1992 standardization. raw difference 7 equivalent approximately 14 points, giving Tunisian 86. If decade, will increased 2001. Hence between become 16 reducing 84, 100. A further calculation has Rindermann (2007). He adopted scores 2003 PISA study mathematics old school students intelligence. 29 economically developed OECD 489 (sd=104), 359 (sd=82). Tunisians 1.40 sd units, 21 79 100 countries. This confirms earlier reviewed Vanhanen (2002, 2006) showing use proxies tends magnify between-country differences tests. recent 86 found standard deviation deviations within nearly 49% larger scholastic achievement "IQ tests" (Lynn Meisenberg, press). Nevertheless, broadly consistent IQs 84 79, respectively. …