تقنين اختبار أوتيس-لينون للقدرة المدرسية (الطبعة الثامنة) "olsat 8th" : دراسة سيكومترية للمستوى المتقدم على عينة من الطلبة في مدينة حماة
The study is mainly a psychometric study to standardize Otis-Lennon School Ability Test “Eighth Edition” advanced level, on a sample of students from the ninth until eleventh class; well as some signs of formative and concurrent validity. Otis-Lennon School Ability Test “Eighth Edition” advanced level was administred on a sample of students from the ninth until eleventh class in Hama governorate for school year 2011- 2012, 280 students 166 male and 124 female. Results show: 1) Construct validity: The correlation coefficients between the item score and the score of cluster ranged between 0.01- 0.69, and were 0.01- 0.60 between each item and the total score, and 0.31- 0.88 between the fourth clusters together and test’s total score. These values have statistical significant at level 0.01, and these results are considered good index for the construct validity. 2) Concurrent validity: The Pearson correlation coefficients between Raven Test and Otis- Lennon School Ability Test ranged between 0.61 -0.72, the values of correlation coefficients between achievement student’s degrees in Arabic and mathematic and their degrees on the verbal and quantitative part of the test between 0.48- 0.53, 0.55- 0.64 according to the educational class and total sample. 3) Discriminative validity: The results of analysis of variance show that there are statistical significance differences between the different educational classes at level less than 0.01. 4) Reliability: The values of internal consistency coefficients by Alpha Cronbach ranged between 0.86- 0.72, and (KR 20) between 0.74- 0.85 and Split-half reliability ranged between 0.61- 0.89, and the correlation coefficients by test-retest reliability ranged between 0.74- 0.82 according to the educational class and total sample. These results show that Otis- Lennon School Ability Test “Eighth Edition” advanced level - (the Syrian Copy) - has good indices and statistical significant for validity and reliability (Published abstract)