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Measuring the Switch Cost of Smartphone Use While Walking
07:00

Measuring the Switch Cost of Smartphone Use While Walking

Published on: April 30, 2020

Task switching under predictable and unpredictable circumstances.

Nikolaos Andreadis1, Philip T Quinlan

  • 1Department of Psychology, University of York, York, England. na516@york.ac.uk

Attention, Perception & Psychophysics
|October 19, 2010
PubMed
Summary
This summary is machine-generated.

Task switching costs occur in both predictable and unpredictable environments. Expectation of task repetition reduces interference, highlighting the impact of cognitive control on task performance.

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Area of Science:

  • Cognitive psychology
  • Neuroscience

Background:

  • Task switching involves shifting attention between different cognitive tasks.
  • Understanding factors influencing task-switching efficiency is crucial for cognitive models.

Purpose of the Study:

  • To investigate task-switching costs under predictable and unpredictable conditions.
  • To examine the influence of trial predictability and stimulus properties on task-switching performance.

Main Methods:

  • Experiments involved speeded parity judgment (digits) or vowel/consonant judgment (letters).
  • Bivalent trials presented both a digit and a letter; univalent trials presented one task-relevant and one irrelevant character.
  • Trial predictability was manipulated via trial sequence, stimulus-cued tasks, or task precues.

Main Results:

  • Task-switching costs were observed across conditions.
  • Response times were slower on bivalent compared to univalent trials (crosstalk effect).
  • This crosstalk effect diminished when task repetition was anticipated.

Conclusions:

  • Both exogenous (stimulus-driven) and endogenous (goal-driven) factors influence task switching.
  • Cognitive control mechanisms adapt to varying levels of predictability to optimize task performance.