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Context dependent learning in the serial RT task.

Abrahamse EL, Verwey WB - Psychol Res (2007)

Bottom Line: In three experiments we assessed the effect of manipulating task irrelevant static context features in a serial reaction-time task.Experiment 2 showed that this effect was mainly caused by changing placeholder shape.It is proposed either that incidental stimulus features are integrated with a global sequence representation, or that the changed context causes participants to strategically inhibit sequence skills.

View Article: PubMed Central - PubMed

Affiliation: Cognitive Psychology and Ergonomics, Faculty of Behavioral Sciences, Universiteit Twente, Postbus 217, 7500 AE, Enschede, The Netherlands. e.l.abrahamse@gw.utwente.nl

ABSTRACT
This study investigated the development of contextual dependencies for sequential perceptual-motor learning on static features in the learning environment. In three experiments we assessed the effect of manipulating task irrelevant static context features in a serial reaction-time task. Experiment 1 demonstrated impaired performance after simultaneously changing display color, placeholder shape, and placeholder location. Experiment 2 showed that this effect was mainly caused by changing placeholder shape. Finally, Experiment 3 indicated that changing context affected both the application of sequence knowledge and the selection of individual responses. It is proposed either that incidental stimulus features are integrated with a global sequence representation, or that the changed context causes participants to strategically inhibit sequence skills.

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Mean RT for Blocks 1–20 in Experiment 1. In Block 19 display color, placeholder shape, and placeholder location were simultaneously changed
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Fig1: Mean RT for Blocks 1–20 in Experiment 1. In Block 19 display color, placeholder shape, and placeholder location were simultaneously changed

Mentions: Practice phase Figure 1 shows the mean RT for each block. We performed a repeated measure ANOVA on reaction times with Block (18; Blocks 1 to 18) as a within-subject variable. This analysis revealed a significant effect for Block, F(17,255)=59.0, P < 0.0001, indicating improvement with practice.Fig. 1


Context dependent learning in the serial RT task.

Abrahamse EL, Verwey WB - Psychol Res (2007)

Mean RT for Blocks 1–20 in Experiment 1. In Block 19 display color, placeholder shape, and placeholder location were simultaneously changed
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC2367391&req=5

Fig1: Mean RT for Blocks 1–20 in Experiment 1. In Block 19 display color, placeholder shape, and placeholder location were simultaneously changed
Mentions: Practice phase Figure 1 shows the mean RT for each block. We performed a repeated measure ANOVA on reaction times with Block (18; Blocks 1 to 18) as a within-subject variable. This analysis revealed a significant effect for Block, F(17,255)=59.0, P < 0.0001, indicating improvement with practice.Fig. 1

Bottom Line: In three experiments we assessed the effect of manipulating task irrelevant static context features in a serial reaction-time task.Experiment 2 showed that this effect was mainly caused by changing placeholder shape.It is proposed either that incidental stimulus features are integrated with a global sequence representation, or that the changed context causes participants to strategically inhibit sequence skills.

View Article: PubMed Central - PubMed

Affiliation: Cognitive Psychology and Ergonomics, Faculty of Behavioral Sciences, Universiteit Twente, Postbus 217, 7500 AE, Enschede, The Netherlands. e.l.abrahamse@gw.utwente.nl

ABSTRACT
This study investigated the development of contextual dependencies for sequential perceptual-motor learning on static features in the learning environment. In three experiments we assessed the effect of manipulating task irrelevant static context features in a serial reaction-time task. Experiment 1 demonstrated impaired performance after simultaneously changing display color, placeholder shape, and placeholder location. Experiment 2 showed that this effect was mainly caused by changing placeholder shape. Finally, Experiment 3 indicated that changing context affected both the application of sequence knowledge and the selection of individual responses. It is proposed either that incidental stimulus features are integrated with a global sequence representation, or that the changed context causes participants to strategically inhibit sequence skills.

Show MeSH