The provided text, an excerpt from an essay by Scott B. MacKenzie, discusses the critical issue of poor construct conceptualization in academic manuscripts, particularly within marketing science, arguing that this foundational flaw leads to a cascade of negative consequences for research validity. The author highlights that inadequate definition of constructs is a more significant problem than often acknowledged, comparing it to the nursery rhyme about a lost nail causing the loss of a kingdom, and states that this failure undermines construct validity and statistical conclusion validity, and ultimately, internal validity. MacKenzie explains that poor conceptualization makes it difficult to develop accurate measures, leads to measurement model misspecification (especially confusing reflective and formative indicators), and weakens the theoretical rationale for hypotheses. The essay concludes by offering several recommendations for breaking this destructive cycle, including the careful definition of constructs, developing measures that fully represent the construct domain, and correctly specifying the relationship between constructs and measures.
