Reinforcement schedules and bar pressing: Some extensions of Zimmerman’s work

Two studies using Zimmerman’s 1959 paradigm for secondary reinforcement were performed. In Exp. 1 the effects of continuous vs. partial primary reinforcement, continuous vs. partial Sr, and buzzer and access to a runway after bar pressing vs. access only were studied. None of these factors or their interactions were significant sources of variation. In Exp. 2 the influence of a 1:5 FR schedule of Sr was compared to Zimmerman’s diminishing …