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Gepubliceerd in: Psychological Research 3/2006

01-05-2006 | Original Article

Pending intentions: Effects of prospective task encoding on the performance of another task

Auteurs: Thomas Kleinsorge, Patrick D. Gajewski

Gepubliceerd in: Psychological Research | Uitgave 3/2006

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Abstract

A number of recent studies casts doubt on the empirical separability of processes of task preparation from the actual execution of the respective task. We report two experiments in which we separated the precueing of a task from its execution by an intervening task. In addition, for the precued task we employed imperative stimuli that in most cases were associated with a competing task, making the execution of this task dependent on an internal representation of the information provided by the precue. Under these conditions, the performance of the intervening task suffered specific interference as a function of its relation to the precued task. This suggests that the encoding of the precue resulted in specific preparation for the precued task. Furthermore, the transition between the intervening task and the precued task was associated with relatively small costs that did not vary as a function of the interval that separated the two tasks. This also suggests that a great deal of preparation for the second task already took place during the encoding of the precue. Further observations suggest that the resolution of the interference between a memory-based task representation, as well as a perceptually induced task representation, and the representation of the currently relevant task took place on the level of individual task features.
Voetnoten
1
In the present article, we use the term “task preparation” exclusively for preparation that can be shown to be specific for a particular task. One indication of task specificity is a reduction of switch costs as a function of the opportunity to engage in advance task preparation. In the literature on task switching, it is not unusual to speak of task preparation on the basis of observing improved performance as a function of the time interval that separates two trials (when the task sequence is known in advance) or the interval that separates the presentation of a precue and the presentation of an imperative stimulus even without observing significantly reduced switch costs. One possibility to account for this kind of “preparation effect” is to assume that participants engaged in a process of goal shifting that does not entail processes like the retrieval of task rules that would be necessary for a reduction of switch costs (e.g., Gotler, Meiran, & Tzelgov, 2003; Koch, 2003). More generally, what seems to be behind these preparation effects that are not accompanied by reductions of switch costs is a reduction of uncertainty about which task to perform and when to perform it. Reductions of uncertainty are well known to speed up performance (cf. Welford, 1980) but are not necessarily linked to task preparation. Perhaps the following illustration will make the distinction clearer: Imagine you are told that you will go on a trip tomorrow. As long as you do not know your destination (e.g., whether it will be hot or cold there), there is not much you can do to prepare for the trip. Once you are told where you will go to, your uncertainty is reduced and you can prepare for the trip, but you don’t have to. Nevertheless, once you decide to prepare for the trip (for example, by packing your bag or buying tickets), the reduction of uncertainty may speed up the initiation of this preparation. Now imagine that you are told that your destination has changed, a situation that is comparable to a situation involving incorrect precues, or that the trip is cancelled altogether, a typical go-nogo situation. As long as you did not engage in preparation for the trip, you have to shift your goal, but it should not matter whether your original and your revised destination are nearby or in different hemispheres. However, once you have started with “trip-specific” preparation, this difference will matter a lot, so the relation between your original and your final destination will determine the costs associated with revising your plan.
 
2
As a further test of whether there was a structural limitation in the ability to uphold preparation for Task 2 while performing Task 1, we correlated for each pair of trials the individual reaction times of Task 1 with the reaction times of Task 2. This was done separately for each experiment and each combination of stimulus congruence, the relation between the two tasks (inter-task relation), and, for Experiment 2, the three RSIs. Generally, the mean individual correlations were quite low (range: - .01 - .23), and, more important, with one exception (out of 32), they were always positive. This speaks against the assumption that preparation for one task occurred at the expense of preparation for the other task of the trial pair.
 
3
The “underadditive switch-cost profile” that can be reliably observed with this task combination consists of the observation of an ordered gradation of switch costs as a function of the relation between two successive tasks (i.e., the inter-task relation). Switch cost are largest with a change of only the type of judgement, smallest with a change of only the mapping, and intermediate with a change of both task features. This switch-cost profile shows up when participants switch among the four tasks without foreknowledge (e.g., Kleinsorge & Heuer, 1999; Kleinsorge et al., 2001), and it is not restricted to this particular task combination but seems to be present with any combination of binary task dimensions that can be represented in a hierarchically structured manner (cf. Kleinsorge, 2004). When participants have reliable foreknowledge about the next task, the switch-cost profile is largely alleviated (cf. Kleinsorge, Heuer, & Schmidtke, 2002), as it was in the present experiments (cf. Fig. 2).
 
Literatuur
go back to reference Altmann EM (2004) The preparation effect in task switching: Carryover of SOA. Memory & Cognition 32:153–163 Altmann EM (2004) The preparation effect in task switching: Carryover of SOA. Memory & Cognition 32:153–163
go back to reference Dreisbach G, Haider H, Kluwe RH (2002) Preparatory processes in the task-switching paradigm: Evidence from the use of probability cues. Journal of Experimental Psychology: Learning, Memory, and Cognition 28:468–483 Dreisbach G, Haider H, Kluwe RH (2002) Preparatory processes in the task-switching paradigm: Evidence from the use of probability cues. Journal of Experimental Psychology: Learning, Memory, and Cognition 28:468–483
go back to reference Eimer M (1997) Uninformative symbolic cues may bias visual-spatial attention: Behavioral and electrophysiological evidence. Biological Psychology 46:67–71 Eimer M (1997) Uninformative symbolic cues may bias visual-spatial attention: Behavioral and electrophysiological evidence. Biological Psychology 46:67–71
go back to reference Gotler A, Meiran N, Tzelgov J (2003) Nonintentional task set activation: Evidence from implicit task sequence learning. Psychonomic Bulletin & Review 10:890–896 Gotler A, Meiran N, Tzelgov J (2003) Nonintentional task set activation: Evidence from implicit task sequence learning. Psychonomic Bulletin & Review 10:890–896
go back to reference Kiesel A, Kunde W, Hoffmann J (2003) Subliminal priming in task switching: Evidence for parallel activation of task sets. In: Bajo T, Lupiánez J (eds) 13th Conference of the European Society of Cognitive Psychology. Universidad de Granada, Granada, pp 256–257 Kiesel A, Kunde W, Hoffmann J (2003) Subliminal priming in task switching: Evidence for parallel activation of task sets. In: Bajo T, Lupiánez J (eds) 13th Conference of the European Society of Cognitive Psychology. Universidad de Granada, Granada, pp 256–257
go back to reference Kleinsorge T (2004) Hierarchical switching with two types of judgement and two stimulus dimensions. Experimental Psychology 51:145–149 Kleinsorge T (2004) Hierarchical switching with two types of judgement and two stimulus dimensions. Experimental Psychology 51:145–149
go back to reference Kleinsorge T, Gajewski PD (2004) Preparation for a forthcoming task is sufficient to produce subsequent shift costs. Psychonomic Bulletin & Review 11:302–306 Kleinsorge T, Gajewski PD (2004) Preparation for a forthcoming task is sufficient to produce subsequent shift costs. Psychonomic Bulletin & Review 11:302–306
go back to reference Kleinsorge T, Heuer H (1999) Hierarchical switching in a multi-dimensional task space. Psychological Research 62:300–312 Kleinsorge T, Heuer H (1999) Hierarchical switching in a multi-dimensional task space. Psychological Research 62:300–312
go back to reference Kleinsorge T, Heuer H, Schmidtke V (2001) Task-set reconfiguration with binary and three-valued task dimensions. Psychological Research 65:192–201 Kleinsorge T, Heuer H, Schmidtke V (2001) Task-set reconfiguration with binary and three-valued task dimensions. Psychological Research 65:192–201
go back to reference Kleinsorge T, Heuer H, Schmidtke V (2002) Processes of task set reconfiguration: Switching operations and implementation operations. Acta Psychologica 111:1–28 Kleinsorge T, Heuer H, Schmidtke V (2002) Processes of task set reconfiguration: Switching operations and implementation operations. Acta Psychologica 111:1–28
go back to reference Kleinsorge T, Schmidtke V, Gajewski PD, Heuer H (2003) The futility of explicit knowledge of a sequence of tasks. The European Journal of Cognitive Psychology 15:455–469 Kleinsorge T, Schmidtke V, Gajewski PD, Heuer H (2003) The futility of explicit knowledge of a sequence of tasks. The European Journal of Cognitive Psychology 15:455–469
go back to reference Kleinsorge T, Gajewski PD, Heuer H (2005) Task sets under reconstruction: Effects of partially incorrect precues. The Quarterly Journal of Experimental Psychology 58:521–546 Kleinsorge T, Gajewski PD, Heuer H (2005) Task sets under reconstruction: Effects of partially incorrect precues. The Quarterly Journal of Experimental Psychology 58:521–546
go back to reference Koch I (2003) The role of external cues for endogenous advance reconfiguration in task switching. Psychonomic Bulletin & Review 10:488–492 Koch I (2003) The role of external cues for endogenous advance reconfiguration in task switching. Psychonomic Bulletin & Review 10:488–492
go back to reference Logan GD (2003) Executive control of thought and action: In search of the wild homunculus. Current Directions in Psychological Science 12: 45–48 Logan GD (2003) Executive control of thought and action: In search of the wild homunculus. Current Directions in Psychological Science 12: 45–48
go back to reference Logan GD, Bundesen C (2003) Clever homunculus: Is there an endogenous act of control in the explicit task-cuing procedure?. Journal of Experimental Psychology: Human Perception and Performance 29:575–599 Logan GD, Bundesen C (2003) Clever homunculus: Is there an endogenous act of control in the explicit task-cuing procedure?. Journal of Experimental Psychology: Human Perception and Performance 29:575–599
go back to reference Mayr U, Kliegl R (2000) Task-set switching and long-term memory retrieval. Journal of Experimental Psychology: Learning, Memory, and Cognition 26:1124–1140 Mayr U, Kliegl R (2000) Task-set switching and long-term memory retrieval. Journal of Experimental Psychology: Learning, Memory, and Cognition 26:1124–1140
go back to reference Meiran N (1996) The reconfiguration of processing mode prior to task performance. Journal of Experimental Psychology: Learning, Memory and Cognition 22:1423–1442 Meiran N (1996) The reconfiguration of processing mode prior to task performance. Journal of Experimental Psychology: Learning, Memory and Cognition 22:1423–1442
go back to reference Rogers RD, Monsell S (1995) Costs of a predictable switch between simple cognitive tasks. Journal of Experimental Psychology: General 124:207–231 Rogers RD, Monsell S (1995) Costs of a predictable switch between simple cognitive tasks. Journal of Experimental Psychology: General 124:207–231
go back to reference Ruthruff E, Remington RW, Johnston JC (2001) Switching between simple cognitive tasks: The interaction of top-down and bottom-up factors. Journal of Experimental Psychology: Human Perception and Performance 27:1404–1419 Ruthruff E, Remington RW, Johnston JC (2001) Switching between simple cognitive tasks: The interaction of top-down and bottom-up factors. Journal of Experimental Psychology: Human Perception and Performance 27:1404–1419
go back to reference Schuch S, Koch I (2003) The role of response selection for inhibition of task sets in task shifting. Journal of Experimental Psychology: Human Perception and Performance 29:92–105 Schuch S, Koch I (2003) The role of response selection for inhibition of task sets in task shifting. Journal of Experimental Psychology: Human Perception and Performance 29:92–105
go back to reference Welford AT (1980) Choice reaction time: Basic concepts. In: Welford AT (ed) Reaction times. Academic Press, London Welford AT (1980) Choice reaction time: Basic concepts. In: Welford AT (ed) Reaction times. Academic Press, London
Metagegevens
Titel
Pending intentions: Effects of prospective task encoding on the performance of another task
Auteurs
Thomas Kleinsorge
Patrick D. Gajewski
Publicatiedatum
01-05-2006
Uitgeverij
Springer-Verlag
Gepubliceerd in
Psychological Research / Uitgave 3/2006
Print ISSN: 0340-0727
Elektronisch ISSN: 1430-2772
DOI
https://doi.org/10.1007/s00426-004-0197-2

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