The role of preliminary magazine training in acquisition of the autoshaped key peck.

Davol et al. (1977) asked a simple question. Does the color of the grain hopper light change how fast pigeons learn to peck a key?

They gave birds magazine training first. The hopper lit up in red or green before grain appeared. Later, the key light matched or mismatched that color. They timed the very first peck.

Birds pecked sooner when the key color matched the hopper color. The lighted hopper acted like a bridge. The first key peck was just a stretched-out version of the same response.

Matching colors cut the wait time. Mismatched colors slowed it. Generalization, not brand-new learning, drove the first peck.

Pear et al. (1971) mapped generalization curves for light brightness. Their wide test range showed peaked gradients. H et al. added color to the story. Together they show both intensity and hue guide early stimulus control.

Fields et al. (2002) trained humans with many examples. More exemplars widened generalization. H et al. did the same with pigeons and one hopper color. Both papers say the same thing: training sets the width of generalization.

Williams et al. (2020) saw kids with autism draw new pictures after equivalence training. No extra rewards were needed. H et al. saw pigeons peck a new key after hopper training. Same process: old learning stretches to a new spot.

When you start autoshaping or any discrimination program, match the first S+ to something the learner already knows. Use the same color, shape, or location that signaled reinforcement in magazine training. You will see faster acquisition and fewer errors. One small tweak saves precious session time.