Limits...
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.

Show MeSH
Mean RTs for the group practicing with a pseudo-random sequence (Experiment 3) and the group practicing with a fixed sequence (taken from Experiment 2). In both groups, Block 19 involved changing placeholder shape
© Copyright Policy
Related In: Results  -  Collection


getmorefigures.php?uid=PMC2367391&req=5

Fig3: Mean RTs for the group practicing with a pseudo-random sequence (Experiment 3) and the group practicing with a fixed sequence (taken from Experiment 2). In both groups, Block 19 involved changing placeholder shape

Mentions: Practice phase RTs obtained in Experiment 3 are depicted in Fig. 3 along with those assessed with the placeholder shape group of Experiment 2. An Order (2; random versus sequential) × Block (18) repeated measures ANOVA on reaction times was performed with Block as within-subject variable. This showed significant main effects for both Block, F(17,510) = 30.5, P < 0.0001, and Order, F(1,30) = 6.7, P < 0.05, and a significant Block by Order interaction, F(17,510) = 20.4, P < 0.0001. As expected, this indicates that participants in the random SRT condition showed less improvement with practice than the participants in the normal SRT (see Fig. 3).Fig. 3


Context dependent learning in the serial RT task.

Abrahamse EL, Verwey WB - Psychol Res (2007)

Mean RTs for the group practicing with a pseudo-random sequence (Experiment 3) and the group practicing with a fixed sequence (taken from Experiment 2). In both groups, Block 19 involved changing placeholder shape
© Copyright Policy
Related In: Results  -  Collection

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

Fig3: Mean RTs for the group practicing with a pseudo-random sequence (Experiment 3) and the group practicing with a fixed sequence (taken from Experiment 2). In both groups, Block 19 involved changing placeholder shape
Mentions: Practice phase RTs obtained in Experiment 3 are depicted in Fig. 3 along with those assessed with the placeholder shape group of Experiment 2. An Order (2; random versus sequential) × Block (18) repeated measures ANOVA on reaction times was performed with Block as within-subject variable. This showed significant main effects for both Block, F(17,510) = 30.5, P < 0.0001, and Order, F(1,30) = 6.7, P < 0.05, and a significant Block by Order interaction, F(17,510) = 20.4, P < 0.0001. As expected, this indicates that participants in the random SRT condition showed less improvement with practice than the participants in the normal SRT (see Fig. 3).Fig. 3

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