Variable ratio
Among the reinforcement schedules, variable ratio is the most productive and the most resistant to extinction. Fixed interval is the least productive and the easiest to extinguish (Figure 1).
D)wether or not someone with a criminal record should revive a donated organ .
A is the correct answer.
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Foreign doctors have all kinds of different forms of training. But many are united by one common factor that seems to be operative especially in the Commonwealth countries — a great emphasis on the bedside exam and on clinical skills. In part, [this approach] was driven by the lack of ready access to all the kinds of sophisticated testing that we have now. But I think that kind of clinical training still serves me very well.
