Interpretative guidelines for neuropsychiatric measures with dichotomously scored items

Determining Random Responding to Objective Tests

Formulas are presented for use in determining if an examinee's test score is different from responding at a random (chance) level to test items. The formulas can be used to test an individual examinee's score or to construct confidence intervals around the expected random score. Examples using standardized and teacher-made tests, and implications for test construction are provided.

Typicality Index of the Strong Interest Inventory: a binomial analysis

The Typicality Index of the 2004 Strong Interest Inventory was developed by Donnay, Morris, Schaubhut, and Thompson to identify inconsistent or other atypical responding. Analysis by the binomial distribution shows that the index, with the recommended cut score, correctly classifies 95.1% of randomly completed inventories.