Punishment as a discriminative stimulus and conditioned reinforcer with humans.

Adults pressed two buttons for coins. One button also brought a loud noise. Later, the same noise came just before extra money. The team tracked how the noise changed button pressing across phases.

This is a single-case design with humans. No extra labels were given.

First, the noise cut presses on that button. People moved to the quiet side. Later, when the noise signaled extra coins, it flipped. The once-hated sound now kept pressing alive.

A punisher turned into a reinforcer after pairing with goodies.

DARDANO et al. (1964) showed the same shift in pigeons two years earlier. Both studies prove punishment can push behavior to the safe option. The 1966 paper simply moves the effect from birds to people.

Bland et al. (2018) echo the idea with S- stimuli. They found an extinction cue also acts like a punisher. Together, the three papers say any aversive stimulus can steer choice.

Vollmer et al. (1996) stretch the logic to babies. Happy adult sounds paired with smiles boosted infant babble. Pairing, not the sound itself, decides what a stimulus becomes.

If you later pair a reprimand, buzzer, or timeout with praise or candy, you risk flipping its value. The child may start seeking the very thing you meant to suppress. Track what your aversives get linked to. Keep them clean or follow with neutral time, not rewards.