Some effects of punishment on pain-elicited aggression.
Immediate, response-linked shock stops pain-triggered aggression, but the behavior returns the moment the shock stops.
01Research in Context
What this study did
Scientists shocked rats’ paws to make them fight. Then they gave the same rats a second, smaller shock right after each bite or dominance pose.
They watched if the extra shock stopped the fighting. When the extra shock ended, they checked if the rats fought again.
What they found
The second shock quickly cut pain-elicited aggression. Dominance poses also dropped.
When the extra shock stopped, fighting came right back. The effect was only temporary.
How this fits with other research
Azrin (1970) got the same result the next year. Biting stopped when every bite brought instant shock.
Schroeder et al. (1969) tested monkeys with the same setup. Their aggression fell even more, showing the idea works across species.
Robinson et al. (1974) later showed a twist. Shock that did NOT follow the bite actually suppressed behavior more. This warns us that contingency, not just pain, drives the effect.
Reynolds (1968) adds a timing rule. Wait even seven seconds and you need much stronger shock to see any drop in behavior.
Why it matters
The study gives a clear, lab-tested rule: immediate, response-linked consequences can stop aggression triggered by pain. Because the effect vanishes when the consequence stops, you must keep the contingency in place and pair it with reinforcement for calm behavior. Use this as a baseline when designing safety plans, but always favor non-painful, ethical alternatives first.
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02At a glance
03Original abstract
Painful mechanical tail-pinch elicited aggressive responses in paired rats; response-contingent electric shock to either forepaws or hindpaws suppressed fighting and stereotyped aggressive postures, including those in which dominance was expressed. There was no evidence that aggression was facilitated by shock that was contingent on pain-elicited aggressive responses. Aggressive responding recovered when shock was discontinued.
Journal of the experimental analysis of behavior, 1969 · doi:10.1901/jeab.1969.12-1017