title: The step method: a new adaptive psychophysical procedure.
abstract: A new adaptive psychophysical method, the step method, is introduced. Simulations show the method to be less biased and more efficient than constant stimuli or Pentland's adaptive method for fewer than 40 trials. An experiment using discrimination of dot number, however, failed to find any differences among the three methods in either bias or efficiency.
authors.forename: W A
authors.initials: WA
authors.lastname: Simpson
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D006801:Humans; D011601:Psychophysics / Q000379:methods*; D012684:Sensory Thresholds; D012984:Software; D014796:Visual Perception