The study of the feasibility of the Application of the Naglieri Nonverbal Ability Test: Second Edition (NNAT2) to Thai students

Abstract

The study of the feasibility of the Application of the Naglieri Nonverbal Ability Test: Second Edition (NNAT2) to Thai students

The objective of this research was to study the feasibility of the application of the Naglieri Nonverbal Ability Test: Second edition (NNAT2) to Thai students. A total of 1,237 students from grades 1 to 12 were sampled representing students from urban and suburban areas of Bangkok and Khon Kaen provinces. The students took NNAT2 in Thai language in compliance with the administration procedure standards of NNAT2. The US norms were used to interpret the scores. The feasibility of the application of the NNAT2 to Thai students was examined.  The results revealed that the NNAT2 provided an adequately accurate and reliable measure of Thai students’ general ability. The mean NAI score of Thai students was slightly higher than the US standard sample. Further analysis revealed that the distribution of scores of the Thai sample was found to be differing from the normal distribution. The results also showed that the NNAT2 is appropriate as a nonverbal measure of general ability for assessing students with learning disabilities and high function autism. The scores obtained reflected the type of disability of each individual correctly. The study of direct use of US norms for Thai students needs to be repeated to verify the consistency of scores.