Fixed-ratio punishment by timeout of concurrent variable-interval behavior.

Pigeons pecked two keys. One key paid grain on a variable-interval schedule. The other key also paid on VI. After every 30 responses on the punished key the bird got a 30-second blackout. The team watched what happened to both response rates.

Timeout cut the punished pecks. The birds also pecked the other key more. This side effect is called behavioral contrast. The schedule still worked even though food stayed available elsewhere.

Strain et al. (1977) saw the opposite. In their preschool, timeout did not punish; it let children escape work and the problem behavior grew. The difference is the lab kept reinforcement running on the second key while the classroom removed all tasks during timeout.

FARMELong (1963) and HERRNSTEISLOANE (1964) mapped the VI baselines used here. They showed pigeons prefer variable over fixed intervals and how rates shift with timing. Thomas (1968) adds punishment to those same VI schedules.

Mullane et al. (2017) later used fixed-ratio ideas with children doing math. Kids picked mixed ratios when tiny easy ratios were tucked inside. The FR concept travels from pigeons to people.

You now know timeout can punish or reinforce depending on what the client can escape. If the child can avoid demands, try paced instruction plus praise instead, as S et al. showed. If reinforcement keeps flowing elsewhere, brief timeout may safely cut the target response without hurting overall engagement.