title: Response to Oud & Folmer: Randomness and Residuals.
abstract: This article presents our response to Oud and Folmer's "Modeling Oscillation, Approximately or Exactly?" (2011), which criticizes aspects of our article, "Latent Differential Equation Modeling of Self-Regulatory and Coregulatory Affective Processes" (2011). In this response, we present a conceptual explanation of the derivative-based estimation that we implemented in our original article, as well as the exact discrete model promoted by Oud & Folmer. We describe relevant differences between each of the two methods, highlight some of their benefits and limitations, and offer justifications for our choice.
authors.affiliation: a Department of Psychology , University of California , Davis.
authors.forename: Joel S
authors.initials: JS
authors.lastname: Steele
authors.affiliation: a Department of Psychology , University of California , Davis.
authors.forename: Emilio
authors.initials: E
authors.lastname: Ferrer