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Related Experiment Videos

Mental chronometry: beyond onset latencies in the lexical decision task

D A Balota1, R A Abrams

  • 1Department of Psychology, Washington University, St. Louis, Missouri 63130, USA. dbalota@artsci.wustl.edu

Journal of Experimental Psychology. Learning, Memory, and Cognition
|September 1, 1995
PubMed
Summary

This study shows word frequency influences not just the start but also the execution of responses, like arm movements and speech. These findings support a model where actions can be prepared before a final decision is made.

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Area of Science:

  • Cognitive Psychology
  • Psycholinguistics
  • Motor Control

Background:

  • Lexical decision tasks are crucial for understanding word recognition.
  • The role of response execution post-initiation is less understood.
  • Investigating how word properties affect motor responses provides insight into cognitive processes.

Purpose of the Study:

  • To examine the influence of word frequency on motor response execution after initiation.
  • To determine if stimulus degradation also impacts post-initiation response characteristics.
  • To test the predictions of the enabled response model.

Main Methods:

  • Four experiments using lexical decision tasks with varying response modalities (arm movement, button press, speech).
  • Manipulation of variables including word frequency, stimulus degradation, and response type.

Related Experiment Videos

  • Measurement of response initiation, latency, accuracy, movement acceleration, force, and speech onset/duration.

    • Main Results:

    • Word frequency significantly modulated movement acceleration and force after initiation.
    • Word frequency and stimulus degradation had additive effects on response latency, accuracy, and force.
    • Speech response onset and duration were also influenced by word frequency.

    Conclusions:

    • Cognitive processes related to word frequency extend to the motor execution phase of responses.
    • Findings support an enabled response model, suggesting action systems can be prepared pre-decision.
    • The study highlights the interconnectedness of lexical processing and motor control.