FIXED-RATIO PUNISHMENT WITH CONTINUOUS REINFORCEMENT.

HENDRY et al. (1964) worked with pigeons on a fixed-ratio schedule. Every peck earned food, but every 30th peck also got a quick electric shock.

They wanted to see if punishment would simply stop the birds, or if new response patterns would pop up.

Shock first cut responding, then the birds bounced back. After each shock they pecked in a short burst, then paused before the next ratio run.

Those bursts and pauses looked like the birds had learned 'shock means go' and 'safe spot means wait.' The punishment itself became a signal.

DeArmond (1966) ran the next test in the same lab. He compared two ways to punish: shock every response versus shock only the first response after a light. Continuous shock cut responding more, but birds still finished the ratio. The 1964 burst-and-pause pattern stayed, showing the effect is robust.

Mechner (1958) had already mapped normal fixed-ratio performance: fast run, pause, repeat. P et al. layered punishment on that baseline and revealed the schedule still controls timing, even when you add pain.

Tracey et al. (1974) later saw the same post-reinforcement pauses in children doing matching-to-sample. Fixed-ratio schedules, with or without punishment, create predictable breaks no matter the species.

If you use response-cost or other punishers, watch for burst-pause cycles. The aversive event can turn into a cue that tells the client when to work and when to rest. You can plan safer 'warning' stimuli or break large ratios into smaller chunks, as Findley et al. (1965) showed conditioned reinforcers mid-ratio keep momentum up.