The item response theory (IRT) also known as latent trait theory, is used for the development, evaluation and administration of standardized measurements; it is widely used in the areas of psychology and education. This theory was developed and expanded for over 50 years and has contributed to...

Small business failure has been the subject of considerable research effort (Beaver, 1966: Berryman, 1983: Holmes, 1988: Bickerdyke, 2000). Peel and Wilson (1996) found that there was a substantial amount of both theoretical and empirical small business research relating to credit management and...

IRT has been increasingly utilized in psychiatry for the purpose of describing the relationship among items in psychiatric disorder symptom batteries hypothesized to be indicators of an underlying latent continuous representing the severity of the psychiatric disorder. It is common to find...