Certification Examinations for Oklahoma Educators (CEOE) Practice Exam

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Which behavioral milestone typically appears earliest in typical infant development?

Rolling over back to front
Making cooing sounds
Using a pincer grasp
Babbling consonants

The correct answer is: Making cooing sounds

Making cooing sounds is typically the earliest behavioral milestone that appears in infant development. This milestone usually emerges around 6 to 8 weeks of age when infants begin to produce vowel-like sounds, often described as cooing. This vocalization is an important part of early communication and reflects the infant's ability to control their vocal cords and explore sound production. Cooing is a precursor to more complex forms of communication and is significant for social interaction. Infants often respond to the sound of their caregivers' voices with coos, laying the foundation for attachment and social bonding. Other milestones, like rolling over back to front, using a pincer grasp, and babbling consonants, develop at later stages in infancy. Rolling over generally occurs around 4 to 6 months, using a pincer grasp develops around 9 to 10 months, and babbling with consonant sounds typically starts between 4 to 6 months as well. Therefore, making cooing sounds stands out as the earliest milestone in this context.