Blurring-Speed Distribution in a Kindergarten Population: The Queens Study

  • Harold N. Levinson


The Queens blurring-speed study was initiated in an attempt to both substantiate and enlarge the data base derived from the Staten Island study. The entire available kindergarten population (n = 1543) of District 26 in Queens was screened for DD utilizing a new and improved 3D optical scanner and a modified blurring-speed methodology.* The aims were multifold:
  1. 1.

    To determine the statistical Modes I and II blurring-speed distributions as a function of word and elephant visual gestalts—and thus attempt to substantiate the bimodal distribution obtained in the Staten Island study. Inasmuch as an elephant (Mode I and II) gestalt was added to a modified Staten Island word gestalt, there resulted four blurring speed determinations per patient (word Mode I, word Mode II, elephant Mode I and elephant Mode II).

  2. 2.

    To determine Mode III positive as a function of low blurring speeds and as a function of high or “normal” blurring speeds—and thus attempt to substantiate the prior Staten Island correlation of Mode III positive with low blurring speeds.

  3. 3.

    To determine a statistical low blurring-speed incidence of dyslexia, if possible.

  4. 4.

    To evaluate Modes I, II, and III as a function of sex.

  5. 5.

    To evaluate Modes I, II, and III as a function of handedness.



Bimodal Distribution Prediction Limit Tracking Speed Island Study Recognition Speed 
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Copyright information

© Springer-Verlag New York Inc. 1980

Authors and Affiliations

  • Harold N. Levinson
    • 1
  1. 1.New York University Medical CenterNew YorkUSA

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