Rovee-Collier and her colleagues (1993) tied one end of a ribbon to a brightly colored mobile and tied the other end ties to an infant's ankle. What did these studies measure?

A) Object permanence
B) Habituation
C) Memory
D) The age of onset of primary circular reactions

Primary Circular Reactions

The repetition of actions that first occurred by chance and that focus on the infant’s own body.

Rovee-Collier

Carolyn Rovee-Collier was a psychologist known for her research on infant memory, demonstrating that even young infants can remember information over time.

Memory

The cognitive process of encoding, storing, and retrieving information, which is vital for learning and the formation of personal identity.