Irrelevant Stimulus Processing When Switching Between Tasks
Abstract
Frequent switching between two tasks afforded by the same stimuli is associated with between-task congruency effects, that is, relatively impaired performance when a stimulus affords different responses as compared to the same responses in both tasks. These congruency effects indicate some form of application of the stimulus-response (S-R) rules of the currently irrelevant task. Between-task congruency effects are usually enhanced on task switch trials compared with task repetition trials. Here we investigate whether this interaction reflects stronger proactive interference from the irrelevant task on switch trials or whether performance on switch trials is characterized by generally enhanced susceptibility to task-irrelevant information processing. To this end, we contrasted between-task congruency effects with interference exerted from flanker stimuli taken from the current task (Experiment 1) and from spatial-numerical association of response codes (SNARC; Experiment 2). In both experiments, between-task congruency effects were larger on switch trials than on repetition trials, whereas interference from the other source remained constant, thus demonstrating that switch trials are not characterized by generally increased distractibility.
References
1994). Shifting intentional set: Exploring the dynamic control of tasks. In , Attention and performance XV: Conscious and nonconscious information processing (pp. 421–452). Cambridge, MA: MIT Press.
(2001). Working memory and the control of action: Evidence from task switching. Journal of Experimental Psychology: General, 130, 641–657.
(2007). A computational model of fractionated conflict-control mechanisms in task-switching. Cognitive Psychology, 55, 37–85.
(1993). The mental representation of parity and number magnitude. Journal of Experimental Psychology: General, 122, 371–396.
(2001). The role of working memory in visual selective attention. Science, 291, 1803–1806.
(2008). That’s what task sets are for: Shielding against irrelevant information. Psychological Research, 72, 355–361.
(2009). How task representations guide attention: Further evidence for the shielding function of task sets. Journal of Experimental Psychology: Learning, Memory, and Cognition, 35, 477–486.
(2011). The shielding function of task sets and its relaxation during task switching. Journal of Experimental Psychology: Learning, Memory, & Cognition, 37, 1540–1546.
(2008). Multiple conflict-driven control mechanisms in the human brain. Trends in Cognitive Sciences, 12, 374–380.
(1974). Effects of noise letters upon the identification of a target letter in a nonsearch task. Perception & Psychophysics, 16, 143–149.
(1994). Chronometric investigations of task switching Ph.D. dissertation. University of California, San Diego.
(2001). Two routes for the processing of verbal numbers: Evidence from the SNARC effect. Psychological Research, 65, 250–259.
(2010). Trial-to-trial modulations of the Simon effect in conditions of attentional limitations: Evidence from dual-tasks. Journal of Experimental Psychology: Human Perception and Performance, 36, 1576–1594.
(2010a). Sustained vs transient cognitive control: Evidence of a behavioural dissociation. Cognition, 114, 338–347.
(2010b). Analyzing the generality of conflict adaptation effects. Journal of Experimental Psychology: Human Perception and Performance, 36, 147–161.
(2002). Task switching: A PDP model. Cognitive Psychology, 44, 297–337.
(2006). Response execution, selection, or activation: What is sufficient for response-related repetition effects under task shifting? Psychological Research, 70, 245–261.
(2001). On attentional control as source of residual shift costs: Evidence from two-component task shifts. Journal of Experimental Psychology: Learning, Memory, and Cognition, 27, 640–653.
(2006). Evidence for task-specific resolution of response conflict. Psychonomic Bulletin & Review, 13, 800–806.
(2010). Control and interference in task switching – a review. Psychological Bulletin, 136, 849–874.
(2007). Task Switching: On the origins of response congruency effects. Psychological Research, 71, 117–125.
(2009). SNARC-like congruency based on number magnitude and response duration. Journal of Experimental Psychology: Learning, Memory, and Cognition, 35, 275–279.
(2001). Automatic and intentional activation of task sets. Journal of Experimental Psychology: Learning, Memory, and Cognition, 27, 1474–1486.
(2006). Cue-based preparation and stimulus-based priming of tasks in task switching. Memory & Cognition, 34, 433–444.
(2005). Distracted and confused? Selective attention under load. Trends in Cognitive Sciences, 9, 75–82.
(2005). The role of working memory in attentional capture. Psychonomic Bulletin and Review, 12, 669–674.
(2004). Load theory of selective attention and cognitive control. Journal of Experimental Psychology: General, 133, 339–354.
(1990). Regression analyses of repeated measures data in cognitive research. Journal of Experimental Psychology: Learning, Memory, and Cognition, 16, 149–157.
(1996). Reconfiguration of processing mode prior to task performance. Journal of Experimental Psychology: Learning, Memory, and Cognition, 22, 1423–1442.
(2000). Reconfiguration of stimulus task sets and response task sets during task switching. In , Control of cognitive processes: Attention and performance XVIII (pp. 377–399). Cambridge, MA: MIT Press.
(2008). The task rule congruency effect in task switching reflects activated long-term memory. Journal of Experimental Psychology: Human Perception and Performance, 34, 137–157.
(2007). Exploring the mental number line: Evidence from a dual-task paradigm. Psychological Research, 71, 598–613.
(2008). Cognitive control acts locally. Cognition, 106, 1071–1080.
(1997). Modulating irrelevant motion perception by varying attentional load in an unrelated task. Science, 278, 1616–1619.
(1995). Costs of a predictable switch between simple cognitive tasks. Journal of Experimental Psychology: General, 124, 207–231.
(2006). Exogenous influences on task-set activation in task switching. The Quarterly Journal of Experimental Psychology, 59, 1033–1046.
(2002). E-prime user’s guide. Pittsburgh: Psychology Software Tools.
(2006). Priming cue encoding by manipulating transition frequency in explicitly cued task switching. Psychonomic Bulletin & Review, 13, 145–151.
(1935). Studies of interference in serial verbal reactions. Journal of Experimental Psychology, 18, 643–662.
(2005). Executive control in the Simon task: A dual-task examination of response priming and its suppression. The European Journal of Cognitive Psychology, 17, 590–618.
(2009). Numbers are associated with different types of spatial information depending on the task. Cognition, 113, 148–253.
(2010). Task switching: Interplay of reconfiguration and interference control. Psychological Bulletin, 136, 601–626.
(2010). Congruency effects between number magnitude and response force. Journal of Experimental Psychology: Learning, Memory, and Cognition, 36, 204–209.
(2008). The impact of stimulus-specific practice and task instructions on response congruency effects between tasks. Psychological Research, 72, 425–432.
(2006). Sequential modulations of interference evoked by processing task-irrelevant stimulus features. Journal of Experimental Psychology: Human Perception and Performance, 32, 644–667.
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