Final answer:
The violation-of-expectancy procedure is based on the expectation that infants lose interest in events that violate their expectations. Infants' reactions, such as looking longer at possible events, are observed in this procedure. It helps researchers understand infants' cognitive abilities and their reasoning about physical events.
Step-by-step explanation:
The violation-of-expectancy procedure is founded on the expectation that infants lose interest in events that violate their expectations. This procedure involves presenting infants with familiar events and then introducing events that either confirm or violate their expectations. The researchers observe the infants' reactions, such as looking longer at the possible events. The violation-of-expectancy procedure helps researchers understand infants' cognitive abilities and their ability to reason about physical events.