Imprinting
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
Imprinting is a rapid, irreversible learning restricted to a critical early-life period, in which an animal attaches to the first suitable stimulus it encounters.
Show
Lorenz's goslings followed him after hatching because he was the first moving object they saw during their critical period.
Watch for
Imprinting occurs only within a narrow critical period — the same stimulus presented later fails to produce it.