Delayed reinforcement as an indiscriminable contingency in verbal/nonverbal correspondence training.

The team worked with preschoolers in a daycare room.

Kids first learned to say what they would do and then do it.

Instead of giving a sticker right away, teachers waited a bit before delivering the prize.

The researchers checked if the delay kept the children’s words and actions matching.

Delayed reinforcement kept the say-do link strong.

The skill also spread to new toys the kids had never practiced with.

The same pattern showed up in a second small experiment.

Okouchi (2009) extends the effect to adults. College students learned a two-button sequence on a screen even when praise came up to 30 seconds late.

Heinicke et al. (2012) seems to disagree. Kids with developmental disabilities failed to learn a simple discrimination when the reward was pushed back 20–40 seconds. The difference is the task: the 1984 children were only keeping a promise, not learning something new.

Crane et al. (2010) conceptually replicate the correspondence target and add a twist: asking kids to repeat their plan out loud boosted follow-through even more.

You can safely delay praise when the child already knows the say-do routine. A short wait still keeps the behavior alive and lets the skill travel to new materials. If you are teaching a brand-new skill or working with learners who have developmental delays, keep the reinforcer immediate at first and add delays only after the behavior is solid.