Skip to toolbar

Tag: Diffusion Model

Working memory load and the retro-cue effect: A diffusion model account

Published in: Journal of Experimental Psychology: Human Perception and Performance, Volume 44, Issue 2, 286-310 Abstract “Retro-cues (i.e., cues presented between the offset of a memory array and the onset of a probe) have consistently been found to enhance performance in working memory tasks, sometimes ameliorating the deleterious effects of increased memory load. However, the mechanism by which retro-cues exert their influence remains a matter of debate. To inform this debate, we applied a hierarchical diffusion model to data from 4 change detection experiments using single item, location-specific probes (i.e., a local recognition task) with either visual or verbal memory stimuli.… Read More

Computational cognitive modeling of the temporal dynamics of fatigue from sleep loss

Published in: Psychonomic Bulletin & Review, Volume 24, Issue 6, December 2017, 1785-1807 Abstract “Computational models have become common tools in psychology. They provide quantitative instantiations of theories that seek to explain the functioning of the human mind. In this paper, we focus on identifying deep theoretical similarities between two very different models. Both models are concerned with how fatigue from sleep loss impacts cognitive processing. The first is based on the diffusion model and posits that fatigue decreases the drift rate of the diffusion process. The second is based on the Adaptive Control of Thought – Rational (ACT-R) cognitive architecture… Read More