Item analysis of the Teacher’s Gifted Rating Screening Scale

Abstract

Objective: The present study aimed to add new evidence of construct validity of the Teacher’s Rating Giftedness Screening Scale. The analysis of its items, in relation to the adjustment indices to the Graduated Response Model, as well as to interpret the sense of the scales formed by the items. Method: The sample was composed of 666 students (64.7% males). The instrument consisted of 42 items that assess five areas (general intellectual abilities, leadership, creativity, specific academic abilities, and artistic talent), being answered by 224 teachers. Results: The results indicated that all items had infit/outfit adjustment indexes within the expected value, between 0.5 and 1.5. The factor accuracy, estimated by the graduated response model, varied between 0.74 to 0.85. Conclusion: The results allowed the elaboration of an interpretation proposal referenced in the item, as well as the identification of the most effective items in discriminating individuals with above average ability level.