Scenаriо: Bаsed оn the reseаrch by Rоvee-Collier and Barr (2001), a 3-month-old infant is trained to kick to move a mobile in a crib with a specific striped liner. A couple of days later, the infant is placed back in the crib for a retention test. Which of the following best describes the nature of the infant's memory in this context?