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Updated: Mar 23, 2026
Methods to Test Visual Attention Online
Published on: February 19, 2015
Analysis of internal and external validity criteria for a computerized visual search task: A pilot study.
María M Richard's1, Isabel Introzzi1, Eliana Zamora1
1a Psychology Department, Research Center on Basic Processes , Institute of Basic Psychology, Applied and Technology (IPSIBAT), Methodology and Education (CIMEPB), National Scientific and Technical Research Council (CONICET), National University of Mar del Plata , Buenos Aires , Argentina.
This study validates a computerized conjunction search task for measuring inhibitory control in children. The task demonstrates strong internal and external validity, making it a reliable tool for assessing perceptual inhibition.
Area of Science:
- Cognitive Psychology
- Developmental Psychology
- Neuroscience
Background:
- Inhibition is a critical executive function influencing cognitive and social development.
- Accurate, computerized assessments of inhibitory performance are essential.
- This study focuses on perceptual inhibition, a key component of executive function.
Purpose of the Study:
- To analyze the internal and external validity of a computerized conjunction search task.
- To evaluate the task's effectiveness in measuring perceptual inhibition.
- To establish the reliability of the TAC Battery's Conjunction Search Task.
Main Methods:
- A sample of 41 children (ages 6-11) from a private school in Argentina participated.
- Participants completed the Conjunction Search Task (TAC Battery) and WISC subtests (Coding, Symbol Search).
- Statistical analyses were performed to assess validity criteria.
Main Results:
- The computerized conjunction search task demonstrated solid internal validity.
- The task also showed strong external validity, correlating with other measures.
- Results confirm the task's reliability as an instrument for measuring perceptual inhibition.
Conclusions:
- The Conjunction Search Task from the TAC Battery is a valid measurement instrument.
- The task effectively assesses perceptual inhibition in children.
- Computerized tools offer reliable methods for evaluating executive functions.
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