Interventions often require multiple decisions to improve outcomes for every student. Whether the decision to implement a practice, tailor an existing protocol, or change approaches, these decisions should be based on individual variables and outcomes via a sequence of treatment. To develop adaptive interventions that have sufficient evidence to…

In many psychological research domains stimulus-response profiles are explained by conjecturing a sequential process in which some variables mediate between stimuli and responses. Charting sequential processes is often a complex task because (1) many possible mediating variables may exist, and (2) interindividual differences may occur in the…

This paper describes a framework for researching the Cognition Hypothesis which claims that pedagogic tasks be sequenced for learners on the basis of increases in their cognitive complexity. It distinguishes dimensions of complexity which increase the conceptual and linguistic demands tasks make on communication, so creating the conditions for L2…