Validation of Hamdan intelligence scale in upper elementary grades using the Rasch model: exploratory study.

Hamdan Intelligence Scale (HIS) is the first intelligence scale that has been developed and normed in the United Arab Emirates (UAE). This study aimed to examine the refinement, validity, and reliability of HIS in upper elementary grades using the Rasch model. A total of 4,301 students (34.3% Male; 65.7% Female) from grade 4 to 6 (32.1% grade 4; 33.7% grade 5; 34.2% grade 6) were administered to the HIS. The confirmatory factor analysis was first conducted to verify the fitness of the one-factor model of the HIS. The results of validity showed strong correlation coefficients between the HIS and the Aurora-g battery (0.83) and the Raven's Standard Progressive Matrices (RSPM; 0.86). Moreover, the results of the developmental trends demonstrated that raw scores of the HIS increase with age and grade relatively constantly across composite scores. Unidimensionality was confirmed through the Confirmatory Factor Analysis and Principal Component Analysis of Residuals (PCAR). The low eigenvalues of the first contrast were below 2, and additionally, the infit and outfit mean squares ranged from 0.88 to 1.14 and 0.84 to 1.14. Rasch's person reliability result of 0.62 was acceptable reliability. The results provided strong support for the validity and reliability of using the Hamdan Intelligence Scale in the UAE environment.

Creative activity and accomplishment as indicators of polymathy among gifted and nongifted students.

This study examined domain specificity among 306 high-school students using the Creative Activity and Accomplishment Checklist (CAAC). The CAAC provides both the quantity of activity and quality of accomplishment scores, allowing an empirical test of possible polymathy among students, some of whom were gifted. Polymathy occurs when an individual performs creatively in more than one domain. This investigation's two objectives were to replicate domain specificity studies with the newest version of the CAAC, which included new domains (i.e., technological and everyday creativity) and quality and quantity scores, and to use it to test for polymathy among students. Previous work with adults suggested that polymaths are creative in multiple domains. They often invest in creative avocations that support their professional creativity. Some evidence of polymathy was uncovered; however, it was not common in this sample. Support for domain specificity was reasonably clear in the present results, yet it was not all-or-nothing but rather a matter of degree. Domains overlapped to varying amount. The amount of overlap varied with the level of talent and from domain to domain. The clearest support for polymathy came from regression analyses which revealed a significant relationship between the quantity of activity in some domains and the quality of creative accomplishment in others. Limitations and future directions are discussed.

Which Divergent Thinking Index Is More Associated With Problem Finding Ability? The Role of Flexibility and Task Nature.

Problem finding (PF) and divergent thinking (DT) are considered to be indicators of creative potential. Previous studies, with different goals, suggest a positive correlation between PF and DT. However, none of these works have explicitly examined which index of DT is more associated with PF. The current investigation examined the association between PF and three main indexes of DT: fluency, flexibility, and originality. It also tested whether such a relation differs based on task nature (verbal vs. figural). The sample consisted of 90 sixth graders who completed three tests: (a) a verbal DT test, (b) a figural DT test, and (c) a PF test. Correlational analysis showed that flexibility was highly correlated with PF in the verbal DT test, whereas originality was significantly correlated with PF in the figural test. Results of the path analysis confirmed the results from correlational analyses and showed that verbal flexibility strongly predicted PF fluency, flexibility, and originality more than any other variable. Likelihood ratio test showed that using 1 or 3% cutoff for scoring originality did not significantly altered the results in both figural and verbal DT (vs. PF), while the likelihood ratio test showed significant differences between the figural and verbal DT. Finally, predictor variables in the verbal DT accounted for 40-58% of the variance in PF skills, whereas predictor variables in the figural DT accounted for 28-37% of the variance in PF skills. As suggested by experts in the field of PF, the role of flexibility in PF is a fertile area to be considered in future studies.