TVMS-3

Administration and scoring

The examinee is given a test booklet containing a series of 39 geometric designs of increasing complexity and is asked to reproduce each design as closely as possible; however, he or she may not sketch or trace the designs, and he or she may not attempt more than one copy for each design. The test is not timed. Results are expressed as a general accuracy standard score and an analysis of errors seen in the copied design. The manual contains detailed descriptions and examples of actual test results obtained during the norming study, showing the error types and scoring guidelines. The manual also contains a scoring tutorial that details the scoring process using annotated examples for all error types, and includes practice exercises. The scoring sheet has a built-in guide to the types of errors possible on each design. Nine types of errors are identified:

• Incorrect Closures
• Incorrect Angles
• Line Quality
• Line Lengths
• Line Connections
• Modification of Size or Part
• Addition or Deletion of a Part
• Rotation or Reversal
• Shape Overlap Error

Analysis of the types of errors made provides a detailed evaluation of visual-motor skills. Results can be reported as standard scores, percentile ranks, or age equivalents. When used along with a test of visual perception, the tests can differentiate between impairments that are primarily visual-motor in nature and perceptual difficulties.