University of Manitoba
U NIVERSITY OF M ANITOBA | Department of Psychology

Developmental Psychology
Warren O. Eaton

Warren Eaton

Developmental Psychology Research

 
Developmental Milestones
Developmental Trajectories
Physical Maturation
Motor Activity Level
Activity Gender Differences and Stereotypes
Favored Developmental Research Methods
Developmental Psychology Reseach and Presentations
Graduate Study Research

Developmental Psychology Courses

Graduate School in Developmental Psychology

University of Manitoba, Canada
Contact Warren Eaton Contact Warren Eaton

Infant Development Milestone Study

Infant Development Milestone Study

Interested in research on Infant Development? Contact the Infant Development Milestone Study. We are looking for graduate students to work on our project.

Physical Maturation

Physical growth is a highly regular process, but children differ tremendously in the timing of their growth spurts. We have studied how these timing differences are related to other variables like information processing speed.

Physical Maturation

  • Traditional measures of physical maturity such as x-rays of particular bones are worrisome and expensive.
  • A non-invasive, practical technique exists for use with children and adolescents -- relative physical stature.
  • Level of physical maturity is expressed as the ratio of present to estimated adult stature.
  • This latter estimate is calculated using published formulae applied to the parents' statures and the child's sex, age, weight, and stature.
  • Two children of the same age and height will have different relative statures if one is closer to his or her estimated adult height than is the other.
  • Various traditional measures of physical maturity such as the skeletal age of the left hand-wrist and knee correlate significantly with RS.

Research finding using relative stature as an index of physical maturation

  • Increased maturation in 5- to 8-year-olds is associated with decreased activity levels, and gender differences in activity may be, in part, the result of sex differences in maturation (Eaton & Yu, 1989).
  • Information processing speed increases steadily through middle childhood, and we (Eaton & Ritchot, 1995) showed that early maturing 9- and 10-year-olds were faster on three reaction time tasks than their late-maturing age-mates.
  • More mature 5- to 11-year-olds do better on some tests of phonological ability (Eaton & Speed, 1995).
  • In a test of the controversial hypothesis that left-handers are maturationally delayed, we (Eaton, Chipperfield, Ritchot, and Kostiuk, 1996) found in three different samples that there was no difference between right- and left-handers.

 

 

Stature Measurement
Stature Measurement

Head Circumference Measurement
Head Circumference Measurement

Measuring Head Circumference
Measuring Head Circumference

 

Warren Eaton | Developmental Psychology Research | Developmental Psychology Research and Presentations | Graduate Study Research
Developmental Psychology Courses | Graduate School in Developmental Psychology | University of Manitoba, Canada | Contact Warren Eaton

Developmental Milestones | Developmental Trajectories | Physical Maturation | Motor Activity Level
Activity Gender Differences and Stereotypes | Favored Developmental Research Methods

 

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