This Special Issue consists of commentaries on Hayes, L.J. and Fryling, M.J. (2019) and interbehaviorism. Printer-friendly version A pragmatic sign theory of truth for the behavioral sciences Descriptive Contextualism in service of Functional Contextualistic aims: A practitioner's perspective on Hayes and Fryling (2019) Seeking to be serviceable some reflections on Hayes and Fryling (2019) Selection by consequence: A response to Hayes and Fryling (2019) Interbehavior as a Clinical Focus in CBS: A Response to Hayes and Fryling, 2019 In support of reacquainting functional contextualism and interbehaviorism Book traversal links for Special Issue on Interbehaviorism as Contextualism; Guest Edited by Karen Kate Kellum and Troy Du Frene Behind the masks: A cross-sectional study on intolerance of uncertainty, perceived vulnerability to disease and psychological flexibility in relation to state anxiety and wellbeing during the COVID-19 pandemic Up A pragmatic sign theory of truth for the behavioral sciences