Foundations of fluency-based assessments in behavioral and psychometric paradigms

Abstract

The chapter presents previous and near term applications and innovations for the assessment of rate-based measures such as fluency. The historical and future developments are discussed within the context of an ideographic behavioral and nomothetic psychometric paradigms of assessment. These paradigms are described and contrasted with descriptions of classical test theory (CTT), generalizability theory (GT), and item response theory (IRT). The interpretation and use argument (IUA) is used to frame the contemporary view on unified validity. These theoretical models are combined with an applied perspective to contextualize and encourage future developments in the measurement of fluency.