Time pressure affects the efficiency of perceptual processing in decisions under conflict

Dambacher, Michael; Hübner, Ronald

Time pressure affects the efficiency of perceptual processing in decisions under conflict

Dateien

Dambacher_263010.pdfGröße: 369.53 KBDownloads: 711

Datum

2015

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Psychologie

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Psychological Research. 2015, 79(1), pp. 83-94. ISSN 0340-0727. eISSN 1430-2772. Available under: doi: 10.1007/s00426-014-0542-z

Zusammenfassung

The negative correlation between speed and accuracy in perceptual decision making is often explained as a tradeoff, where lowered decision boundaries under time pressure result in faster but more error-prone responses. Corresponding implementations in sequential sampling models confirmed the success of this account, which has led to the prevalent assumption that a second component of decision making, the efficiency of perceptual processing, is largely independent from temporal demands. To test the generality of this claim, we examined time pressure effects on decisions under conflict. Data from a flanker task were fit with a sequential sampling model that incorporates two successive phases of response selection, driven by the output of an early and late stage of stimulus selection, respectively. The fits revealed the canonical decrease of response boundaries with increasing time pressure. In addition, time pressure reduced the duration of non-decisional processes and impaired the early stage of stimulus selection, together with the subsequent first phase of response selection. The results show that the relation between speed and accuracy not only relies on the strategic adjustment of response boundaries but involves variations of processing efficiency. The findings support recent evidence of drift rate modulations in response to time pressure in simple perceptual decisions and confirm their validity in the context of more complex tasks.

Fachgebiet (DDC)

150 Psychologie

Zitieren

ISO 690

DAMBACHER, Michael, Ronald HÜBNER, 2015. Time pressure affects the efficiency of perceptual processing in decisions under conflict. In: Psychological Research. 2015, 79(1), pp. 83-94. ISSN 0340-0727. eISSN 1430-2772. Available under: doi: 10.1007/s00426-014-0542-z

BibTex

@article{Dambacher2015-01press-26301,
  year={2015},
  doi={10.1007/s00426-014-0542-z},
  title={Time pressure affects the efficiency of perceptual processing in decisions under conflict},
  number={1},
  volume={79},
  issn={0340-0727},
  journal={Psychological Research},
  pages={83--94},
  author={Dambacher, Michael and Hübner, Ronald}
}

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