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The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition
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Alertness and cognitive control: Testing the spatial grouping hypothesis.

Darryl W Schneider1

  • 1Department of Psychological Sciences, Purdue University, 703 Third Street, West Lafayette, IN, 47907, USA. dws@purdue.edu.

Attention, Perception & Psychophysics
|May 25, 2019
PubMed
Summary
This summary is machine-generated.

Increased alertness enhances cognitive control in the flanker task, but not through spatial grouping. This study found alertness effects on attention were independent of stimulus alignment, challenging a key theory.

Keywords:
AlertnessCognitive controlFlanker taskSelective attentionStimulus alignment

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Experimental Psychology

Background:

  • Alertness influences cognitive control, evidenced by larger flanker task congruency effects on alert trials versus no-alert trials.
  • A leading hypothesis suggests increased alertness enhances cognitive control by promoting spatial grouping of target and distractor stimuli.

Purpose of the Study:

  • To investigate the spatial grouping hypothesis regarding the interaction between alertness and congruency effects in the flanker task.
  • To determine if manipulating spatial alignment of stimuli modulates the alerting-congruency interaction.

Main Methods:

  • Three experiments were conducted manipulating the spatial alignment (collinearity) of target and distractor stimuli in the flanker task.
  • Alerting cues were presented before task stimuli to induce differential alertness levels.
  • Congruency effects on response times were measured under varying stimulus alignment conditions.

Main Results:

  • Significant alerting-congruency interactions were consistently observed across all experiments.
  • Congruency effects were smaller for misaligned stimuli compared to aligned stimuli.
  • The alerting-congruency interaction was not consistently modulated by stimulus alignment.

Conclusions:

  • The results do not support the spatial grouping hypothesis as a mechanism explaining the alertness-congruency interaction in the flanker task.
  • This research helps refine theoretical models linking alertness to cognitive control by excluding spatial grouping as a primary mediator.