Decision making is a cognitive process that considerably influences nearly every aspect of human life, which shapes outcomes and overall well-being of individuals. This study consisted of two parts, in the first part of which the English version of a 64-item decision-making questionnaire was adapted into Turkish. Responses were collected from 22…

Background: Addenbrooke's Cognitive Examination III (ACE-III) was developed as a screening tool for cognitive disorders. Many countries have proven the cultural adaptation, reliability and validity of ACE-III. Aims: To make cultural adaptations of ACE-III for the Turkish population and to examine its validity and reliability. Methods &…

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 purposes of this study were to develop a culture specific critical thinking ability test for 6, 7, and 8. grade students in Turkey and to use it as an assessment instrument for giftedness. For these purposes, item pool involving 22 items was formed by writing items focusing on the current and common events presented in (Turkish) media from…

The authors' purpose was to investigate the effect of origami-based instruction on elementary students' spatial ability. The students' self-reported perceptions related to the origami-based instruction were also examined. Data was collected via purposive sampling techniques from students enrolled in a private elementary school. A spatial ability…