An infant is shown an interesting rattle and appears to like it. Then the mother places the rattle under a blanket. The infant appears to forget about the rattle completely. Which of the following is most likely true?
◦ The infant probably is older than 8 months.
◦ The infant probably is younger than 8 months.
◦ The infant had habituated to the rattle.
◦ The infant had not habituated to the rattle.