The Conditioned Galvanic Skin Response Under Two Modes Of Reinforcement

Abstract
The galvanic skin response in 56 subjects with normal hearing for 1000 cps was conditioned to appear upon auditory stimulus using electric shock as the unconditioned stimulus. One-half of the group received 40% reinforcement with the unconditioned stimulus; the other half received 100% reinforcement. Half of each subgroup was conditioned with a constant test of 30 db; the other half was conditioned with a variable intensity of 30, 50 and 70 db. Reinforcement was then discontinued. One-half of each subgroup was extinguished at a constant intensity of 30 db; the other half was extinguished at variable intensity. The 40% reinforced group showed greater resistance to extinction.