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Little empirical data are available concerning the cognitive abilities of gifted individuals in general and especially those who excel in mathematics. We examined visual processing abilities distinguishing between general giftedness (G) and excellence in mathematics (EM). The research population consisted of 190 students from four groups of 10th- to 12th-grade students who differed in their G and EM levels. The students performed a battery of visual processing tests: visual-spatial memory, visual speed of information processing (SVIP), visual perception (VP), and visual attention (VA). The results demonstrate that EM type has a significant effect on the Backward Corsi-Span, whereas G type has a main effect on the Pattern-Recognition test and d2-CP (concentration performance) and d2-E (number of errors) scores in the attention test. SVIP and the fluctuation rate in VA tests (d2-FR) were associated with both G and EM types. The current study identified two different components of visual processing that were accordingly termed Visual-Serial and Pattern-Recall. It seems that G-EM students can be characterized by superior performance on Visual-Serial processing.

A considerable amount of recent evidence suggests that speed of information processing (SIP) may be related to general giftedness as well as contributing to higher mathematical ability. To date, no study has examined SIP associated with both general giftedness (G) and excellence in mathematics (EM). This paper presents a part of more extensive research aimed at a multidimensional examination of mathematical giftedness, which is a complex function of the G factor and EM factor. The research population consisted of four groups of 10th-11th grade students who differed in their G level and EM level. 190 participants performed five SIP tests: Visual-matching, Cross-out of numbers, Digit-symbol, Symbol-search and Simple arithmetic exercises. We found that the G-EM group outperformed the three other study groups on all five tests. The findings reveal that betweengroup differences in performance on Cross-out of numbers and Simple arithmetic exercises tests are associated with both G and EM factors, whereas especially the G factor had an effect on students' scores on Digit-symbol, Symbol-search and Visual-matching tests. In addition, we found gender differences on the Digit-symbol and Symbol-search tests. The results of this study suggest that EM and G factors are interrelated but represent different traits with respect to the SIP.