The aim of the present study is to develop a national non-verbal cognitive ability test in Turkey. Test items were developed during the first stage and applied as a pilot study on 3,073 children in the age interval of 4 to 13. The test was given its final form based on the values of item difficulty, item distinctiveness, item total score…

The objective of the study was to test the Coloured Progressive Matrices Test with regard to reliability and validity for the 3-9 age sample group because of the lack of diagnostic tools for the pre-school period. The sample group of the study was comprised of a total of 925 children with 433 girls (46.8%) and 492 boys (53.2%). Coloured…

Provides new American age norms for Raven's Progressive Matrices, based on screening of 500 vocational counseling and 2,992 psychiatric veteran patients newly admitted to hospital. Reliability data were acceptable, but indicated need for revision of the Raven. Within limits set by current reliability, validity data presented were positive.…

The efficacy of Raven's Matrices in the gifted identification process is reviewed, focusing on their reliability, validity, and fairness and comparing them with other intelligence tests. It is concluded that, despite problems with narrowness of scope and standardization practices, these tests provide a useful screening device for intellectually…