AP PSYCHOLOGY

Detailed explanation-1: -Normal Causes of Baby Head Shaking As babies learn to control their bodies, develop the muscles they need to hold up their heads on their own, and test their movement abilities, head shaking can help them reach developmental goals.

Detailed explanation-2: -Your baby might delight in banging blocks together, placing objects in a container and taking them out, as well as poking things with a finger. Evolving language. Most babies this age respond to simple verbal requests. Your baby might become skilled at gestures, such as shaking the head no or waving bye-bye.

Detailed explanation-3: -Infants had difficulty learning the nodding movement, but they could perform the physical movement before using it to communicate yes. These gestures developed along different trajectories with shaking the head for no emerging between 13 and 15 months and nodding for yes between 16 and 18 months.

Detailed explanation-4: -Not using gestures could be a sign of developmental delays. Gestures emerge around 9 months. By 12 months, common motions include waving, shaking the head, reaching, pointing, and clapping. Cultural gestures (thumbs-up or high-fives) emerge by 16 months.