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Measurements

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Measures of Intelligences
1. Francis Galton
a. Measured head circumferences in a first attempts to measure intelligence
2. Binet-Simon intelligence scale
a. Developed by Alfred Binet and Theodore Simon, this test was used to evaluate the performance of children based on a chronological age. This Measure was used to identify the mental quotient and learning potential of that child.
Notes.
Galton’s was a pioneer in the applied science of eugenics. He took notice to similarities passed down from one family member to the next and believed certain characteristics like intelligence had something to do with cranial circumferences (Galton, 1869). Though, Galton’s methods of investigation may have been valid according the means of the time the judgments made toward these account were more accurate. This improved over time as Galton was able to pioneer his techniques for measuring head sizes. He was also able to identify differences in races as one of the remaining differences based on brain-body allometric regressions (Rushton, 1990). Binet and Simon were asked by the French government to help identify children who may need help with education as new laws made it mandate for all children to attend school. Based on the challenge that presented them they created a series of test questions focusing on a range of measures that the schooling did not teach. During his study, Binet was able to identify that the children ranged in how they answered, some could answer more advanced questions that older children could, and others could answer at levels of younger children, even if they were in the same age group. The validity of his tests increased as they were refined. Based on this observation, Binet suggested that intelligence could be measured based on an age range based on the mental abilities of those children (Kohs, 1914). Of course in contrast to Galton’s test, Binets tests are more reliably and hold more validity based on how they are administered and measured.

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