Two parameters of a temporally defined schedule of negative reinforcement.

The team built a basic lab setup with pigeons. They set a timer. If the bird pecked before the buzzer, it escaped a mild shock. If it pecked after the buzzer, it still escaped. The study asked: how do two timer settings change escape and avoidance?

The timer settings were the only things that moved. Everything else stayed the same. This let the researchers see pure schedule effects.

Shorter timer gaps gave more avoidance pecks. Longer gaps gave more escape pecks. The birds acted like the rules for negative reinforcement mirror the rules for positive reinforcement.

A small tweak in delay flipped the response class. That is the whole story.

Neef et al. (1986) later moved the same parametric logic into a group home. They showed adults with severe ID stay on task when reinforcement comes every 60–100 s. The 1963 lab numbers became a real-world dose.

Bailey et al. (2008) went the other direction. They cut response-stimulus dependency and saw control weaken. Their 2008 data echo the 1963 finding: timing plus contingency sets the strength of the schedule.

Dracobly et al. (2017) added lag requirements. Like the 1963 study, they showed one parametric change can switch the topographies you see. The thread across 54 years is: dial the schedule, dial the behavior.

You already pick reinforcement schedules daily. This paper says the delay values you choose for escape or avoidance work just like the values you choose for reward. If you want more avoidance (early responses), tighten the window. If you want clean escape (after-stimulus responses), open the window. Test one parameter at a time and watch the change. That is your Monday tweak.