Alternate Forms of the State-Trait Anxiety Inventory

Abstract
Alternate forms of the state anxiety (A-State) and trait anxiety (A-Trait) scales of the State-Trait Anxiety Inventory (STAI) were constructed by dividing the 20 items of each scale into two briefer forms having 10 items each. The alternate forms were equated according to several criteria including item mean scores and itemremainder correlation coefficients. For the A-State scale, the item statistics were taken from the STAI manual. In the case of the A-Trait scale, the item statistics were based on an administration of the scale to 189 female and 113 male introductory psychology students. The alternate forms and item statistics are presented.

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