Mahnaz Saeidi - Department of English, Tabriz Branch, Islamic Azad University, Tabriz, Iran
Shahla Ostvar - School of Educational Studies, UniversitiSains Malaysia, ۱۱۸۰۰, Minden, Penang
Ali Derakhshan - Assistant Professor of Applied Linguistics, Golestan University, Gorgan, Iran
Branton Shearer - The President of MI Research and Consulting, MI Research and Consulting Inc, Kent, Ohio, USA

This study reports psychometric properties and derivation of norms for a Persian version of the Multiple Intelligence Developmental Assessment Scales (MIDAS) for Adults. After examining and confirming equivalency between English and Persian versions, translated and validated by Saeidi, Ostovar, Shearer, and Asghari Jafarabadi (2015), the scale was administered to a sample (N = 2146), including students, undergraduates, graduates, and adults from different provinces in Iran. The participants were at least 19 years old and above (M = 29.40, SD = 2.26). Out of 2146 samples, 1103 females and 1043 were males. To examine the validity and reliability properties of the scale, exploratory and confirmatory factor analyses, Cronbach Alpha (α) reliability correlation coefficients, and corrected item-total correlations were employed. Exploratory factor analysis using varimax rotation identified eight principal components, which accounted for 67.21% of the variance for 115 items. The internal consistency coefficient (α = .92; ranging from 0.89 to 0.93) was also very high. The confirmatory analysis generally replicated the original conceptualization of the MIDAS. According to the results, the Persian-MIDAS-adults questionnaire has good psychometric properties in the research community and can be safely used as a valid tool to assess MI in Iran.

Psychometric properties, Persian-MIDAS-Adults, factor analysis, reliability, validity