Table of Contents:
  • Demonstrations and eyewitness accounts: fidelity of report
  • Serial reproduction, and the assessment of changes of meaning
  • The control or exclusion of meaning
  • Getting beneath recognition
  • "Weight": a study of physical and perceptual dimensions
  • "Extent" and "density", and a paradigm of perceptual learning
  • "Length": and the development of a frame of reference
  • Discussion and findings.