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Assessing motivation in children using a progressive ratio task.

John J Chelonis1, Claire R Gravelin, Merle G Paule

  • 1Division of Neurotoxicology, National Center for Toxicological Research, FDA, United States. John.chelonis@fda.hhs.gov

Behavioural Processes
|April 22, 2011
PubMed
Summary
This summary is machine-generated.

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Children's motivation, assessed via a progressive ratio task, increases with age and is higher in boys than girls. Older children showed higher breakpoints due to faster response times, highlighting age and sex influences on motivation.

Area of Science:

  • Behavioral science
  • Child psychology
  • Animal behavior models

Background:

  • Progressive ratio tasks are used to study motivation in humans and animals.
  • Understanding motivational factors in children is crucial for developmental research.

Purpose of the Study:

  • To investigate the influence of age and sex on children's performance in a progressive ratio task.
  • To examine how motivational aspects differ across age groups and between sexes in children.

Main Methods:

  • 847 children (ages 4-14) performed a 10-minute progressive ratio task for nickel reinforcers.
  • Task involved increasing response requirements for each successive reinforcer.
  • Key metrics included breakpoint and inter-response time.

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Main Results:

  • Older children achieved significantly higher breakpoints than younger children.
  • Older children exhibited significantly shorter inter-response times.
  • Boys demonstrated significantly higher breakpoints than girls, particularly in older age groups.

Conclusions:

  • Age and sex significantly influence performance on progressive ratio tasks in children.
  • Findings suggest age and sex impact motivational processes in childhood.
  • Human performance data enhances translational utility for animal model comparisons.