title: Inducing Proactive Control Shifts in the AX-CPT.
abstract: The Dual Mechanisms of Control (DMC) account (Braver, 2012) proposes two distinct mechanisms of cognitive control, proactive and reactive. This account has been supported by a large number of studies using the AX-CPT paradigm that have demonstrated not only between-group differences, but also within-subjects variability in the use of the two control mechanisms. Yet there has been little investigation of task manipulations that can experimentally modulate the use of proactive control in healthy young adults; such manipulations could be useful to better understand the workings of cognitive control mechanisms. In the current study, a series of three experiments demonstrate how individuals can be systematically biased toward and away from the utilization of proactive control, via strategy training and no-go manipulations, respectively. These results provide increased support for the DMC framework, and provide a new basis from which to examine group-based differences and neural mechanisms underlying the two control modes.
authors.affiliation: Department of Psychology, LPNC UMR CNRS 5105, University of SavoyChambéry, France; Department of Psychology, CRPCC EA 1285, University of RennesRennes, France.
authors.forename: Corentin
authors.initials: C
authors.lastname: Gonthier
authors.affiliation: Department of Psychology, Princeton University, PrincetonNJ, USA; Department of Psychological Sciences, Case Western Reserve University, ClevelandOH, USA.
authors.forename: Brooke N
authors.initials: BN
authors.lastname: Macnamara
authors.affiliation: Department of Psychology, Princeton University, Princeton NJ, USA.
authors.forename: Michael
authors.initials: M
authors.lastname: Chow
authors.affiliation: Department of Psychology, Princeton University, PrincetonNJ, USA; Division of Behavioral and Organizational Sciences, Claremont Graduate University, ClaremontCA, USA.
authors.forename: Andrew R A
authors.initials: AR
authors.lastname: Conway
authors.affiliation: Department of Psychology and Brain Sciences, Washington University in St. Louis, St. Louis MO, USA.
authors.forename: Todd S
authors.initials: TS
authors.lastname: Braver
keywords: AX-CPT; Dual Mechanisms of Control; cognitive control; no-go manipulation; proactive control; strategy training