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Pencil lead diameter affects response sheet completion time.

B H Gordon1, A J Velkey

  • 1Mississippi College, Clinton 39058, USA.

Perceptual and Motor Skills
|April 19, 2000
PubMed
Summary
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Using a finer pencil lead diameter (.5 mm) significantly slowed down the completion time for multiple-choice answer sheets compared to thicker leads. This finding impacts test-taking strategies and tool selection for standardized assessments.

Area of Science:

  • Educational Psychology
  • Human-Computer Interaction
  • Ergonomics

Background:

  • Standardized testing relies on efficient response sheet completion.
  • Pencil characteristics, like lead diameter, may influence task performance.
  • Understanding these factors can optimize testing procedures.

Purpose of the Study:

  • To investigate the impact of different pencil lead diameters on the time required to complete multiple-choice answer sheets.
  • To compare performance using .5 mm, .7 mm, .9 mm, and a standard No. 2 pencil.

Main Methods:

  • Participants filled in response bubbles using pencils with varying lead diameters (.5 mm, .9 mm, No. 2, and .7 mm in a second experiment).
  • Completion time for standardized answer sheets was recorded and analyzed.

Related Experiment Videos

Main Results:

  • A .5 mm pencil lead diameter resulted in significantly slower response sheet completion times.
  • Completion times were faster with .7 mm, .9 mm, and No. 2 pencils compared to the .5 mm lead.

Conclusions:

  • Finer pencil lead diameters (e.g., .5 mm) negatively affect the speed of completing standardized tests.
  • Thicker lead diameters (.7 mm, .9 mm, No. 2) are more efficient for bubble-filling tasks in timed assessments.