University of Twente Student Theses


Context-dependency of motor chunks in a DSP go/no-go task

Owtschary, Gabriele (2012) Context-dependency of motor chunks in a DSP go/no-go task.

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Abstract:Numerous studies have shown that performance is enhanced when the retrieval context matches the original context, initially studied in the verbal memory domain and broadened into the domain of motor skill learning. The present study was designed to address the role of practice concerning context-dependence of motor chunks in the DSP go/no-go task. The results showed that practice did not affect the sensitivity of contextual-dependencies; the groups with limited practice as well as extended practice did not rely on context features during performance. It is proposed that after extensive practice motor chunks develop triggered by the first presented stimulus. The limited practice group had sufficient training for the formation of motor chunks. Moreover, the study examined the impact of context-dependencies during the presentation of differently structured sequences (two different chunks vs. one repeated chunk). When participants had to reproduce a second different chunk context dependencies emerged which facilitated the retrieval of a representation. Based on the findings it can be assumed that the demands of the cognitive processor, which is responsible for loading and searching of motor chunks, is too high when confronted with a sequence made up of two different chunks. Therefore contextual features support the access of a chunk. It is only successful when the context in which motor chunks have to be retrieved is the same as during acquisition otherwise a motor chunk is not completely activated.
Item Type:Essay (Bachelor)
Faculty:BMS: Behavioural, Management and Social Sciences
Subject:77 psychology
Programme:Psychology BSc (56604)
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