Setting events in applied behavior analysis: Toward a conceptual and methodological expansion.

Galbicka et al. (1981) wrote a theory paper. They said ABA should look beyond the moment before a behavior. They coined the term "setting events" for hidden background factors that quietly shape behavior later.

The paper gives everyday examples. A bad night’s sleep can make a student bolt from class. A crowded bus ride can spark an afternoon meltdown. These are not immediate triggers. They are slow-burn antecedents.

The paper does not report new data. Instead, it maps a new box on the ABA flowchart: setting events sit between broad context and immediate trigger. The authors argue we must measure and change these events to make interventions stick.

Kennedy et al. (1993) tested the idea. They removed morning setting events for students with severe disabilities. Problem behavior dropped all day. This reversal study turns the 1981 call into hard evidence.

Peter et al. (2003, 2005) gave us a tool. Their staff interview lists common setting events like “crowded room” or “late van.” Teams now have a quick way to find each client’s hidden triggers.

Smith et al. (1997) widened the lens again. Their review groups setting events with other antecedents under basic principles. It shows the field moving from a single paper to a full framework.

If you only run a 10-second ABC check, you may miss the real lever. Ask about sleep, meals, staff changes, or transport hassles. Add two questions to your intake: “Anything unusual this morning?” and “How was the ride here?” Then track if removing those events cuts problem behavior before you plan a full intervention.