SECONDARY REINFORCEMENT AND RATE OF PRIMARY REINFORCEMENT.

Pigeons pecked a key for food. First, each peck produced food on two different schedules. One key color meant food came fast. Another color meant food came slow.

Then the food stopped. Now pecks only produced the key colors. The birds kept pecking. The color that had signaled fast food got more pecks.

The birds worked for the colored key light in exact step with its old food rate. Fast-food color got fast pecking. Slow-food color got slow pecking.

The key light had become a secondary reinforcer. Its strength copied the primary rate it once signaled.

Tan et al. (2015) and DeFulio et al. (2014) ran token economies with pigeons. They swapped the simple key light for plastic tokens. The same rule held: tokens tied to richer food rates were pecked more. The 1964 rate-matching rule scales up to complex economies.

Rutherford et al. (2003) added a twist. Birds chose between a token now plus a delay, or more tokens later. Choice still tracked the old food rate linked to each token. The 1964 rule guides self-control too.

Walker (1968) looked at pauses, not peck rate. Pigeons waited longer before starting a ratio when the signaled food rate was low. Same principle: behavior mirrors the reinforcement history tied to the stimulus.

Your praise, tokens, or points are secondary reinforcers. Their power comes from the primary reinforcement they once signaled. If a token has bought 5-minute breaks 80% of the time and another only 20%, the first token will drive more work. Check each learner's history. Pair your best secondary stimuli with the richest primary rates you can. Then watch the behavior match that history.