Modeling Control Strategies in the N-Back Task

Two studies aiming to investigate the use of cognitive control strategies in the N-Back task are presented. The first study identified a behavioral effect that seemed indicative of participants’ proneness toward using high- versus low-control strategies. Two ACT-R models of N-Back implementing the two hypothesized strategies were developed. Model simulations were used to identify the proneness toward using high- versus low-control strategies by the individual participants in the second study. An independent measure of control ‐ Stroop interference ‐ was used to validate the predictions of the two models.

[1]  B McElree,et al.  Working memory and focal attention. , 2001, Journal of experimental psychology. Learning, memory, and cognition.

[2]  E. Stein,et al.  A parametric manipulation of central executive functioning. , 2000, Cerebral cortex.

[3]  Edward E. Smith,et al.  Temporal dynamics of brain activation during a working memory task , 1997, Nature.

[4]  Niels Taatgen,et al.  Time Interval Estimation: Internal Clock or Attentional Mechanism? , 2005 .

[5]  John R. Anderson,et al.  Human memory: An adaptive perspective. , 1989 .

[6]  Edward E. Smith,et al.  Dissociation of Storage and Rehearsal in Verbal Working Memory: Evidence From Positron Emission Tomography , 1996 .

[7]  Kathryn M. McMillan,et al.  N‐back working memory paradigm: A meta‐analysis of normative functional neuroimaging studies , 2005, Human brain mapping.

[8]  Colin M. Macleod.  Half a century of research on the Stroop effect: an integrative review. , 1991, Psychological bulletin.

[9]  J. Jonides,et al.  Storage and executive processes in the frontal lobes. , 1999, Science.

[10]  Ian Marshall,et al.  Brain activation and the phonological loop: The impact of rehearsal , 2003, Brain and Cognition.

[11]  D. Yntema,et al.  Recall as a search process , 1963 .

[12]  M. J. Emerson,et al.  The Unity and Diversity of Executive Functions and Their Contributions to Complex “Frontal Lobe” Tasks: A Latent Variable Analysis , 2000, Cognitive Psychology.

[13]  Yaakov Stern,et al.  Positive evidence against human hippocampal involvement in working memory maintenance of familiar stimuli. , 2004, Cerebral cortex.

[14]  E. Miller,et al.  An integrative theory of prefrontal cortex function. , 2001, Annual review of neuroscience.

[15]  A. Baddeley.  The episodic buffer: a new component of working memory? , 2000, Trends in Cognitive Sciences.