Abstract
An electromagnetically controlled armature was developed which silently unlocks manipulanda (shuttle box doors, wheels, levers) for response control in discrete trial situations. The device was found to produce no cue to Ss as to when responding was possible in a shuttlebox situation.
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The development of this device was made possible through a grant from the Graduate Research Board, University of Illinois at Chicago Circle.
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Freedman, P.E., Kamowski, T. An inexpensive silent unlocking device for manipulanda. Behav. Res. Meth. & Instru. 1, 34 (1968). https://doi.org/10.3758/BF03209871
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DOI: https://doi.org/10.3758/BF03209871