Título: Formative Constructs in Information Systems
Palestrante: Prof. Stacie Petter (Baylor University, USA), chaperoned by Prof. Valter Assis Moreno (UERJ/IBMEC, Brazil)
While researchers go to great lengths to justify and prove theoretical links between constructs, the relationship between measurement items and constructs is often ignored. By default, the relationship between construct and item is assumed to be reflective, meaning that the measurement items.are a reflection of the construct. Many times, though, the nature of the construct is not reflective, but rather formative. Formative constructs occur when the items describe and define the construct rather than vice versa. Stacie examines whether formative constructs are indeed being mistaken for reflective constructs by information systems researchers. By examining complete volumes of MIS Quarterly and Information Systems Research over time, her coauthors and her discovered that a significant number of articles have indeed mis-specified formative constructs. For scientific results to be valid, the authors argue that researchers must properly specify formative constructs. The paper Stacie will discuss with us deals with the implications of different patterns of common misspecifications of formative constructs on both Type I and Type II errors. To avoid these errors, she provides us with a roadmap to properly specify formative constructs.