Abstract

SALES, Hemerson Fillipy Silva; ANDRADE, Josemberg Moura de  and  ASFORA, Vivianne Freitas Oliveira. Development of an item pool to assess major depressive disorder. Aval. psicol. [online]. 2018, vol.17, n.4, pp. 451-461. ISSN 1677-0471.  http://dx.doi.org/10.15689/ap.2018.1704.5.05.

The purpose of this research is to develop an item pool to assess Major Depressive Disorder (MDD). To do so, we elaborated 150 items divided into two sets (A and B), and then had those items rated by a sample 501 adults from the cities of Parnaíba-PI and João Pessoa- PB. As for the results, the factor analysis using the Hull Method revealed the salience of a large general factor that produced excellent alpha values in both item sets (.93 and .96, respectively), thus ensuring the unidimensionality and local independence of the items. Regarding the calibrations, the obtained estimates indicated the need to exclude and change the response categories of some items, which were recategorized, and had their parameters reestimated. The item pool presented sound psychometric properties, and it can now be included in computerized adaptive testing.

Keywords : major depressive disorder; items bank; item response theory.

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