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If the infant is unable to move out of this position or the reflex continues to be triggered past six months of age, the child may have a disorder of the upper motor neurons. According to Laura Berk, the tonic neck reflex is a precursor to the hand/eye coordination of the infant. It also prepares the infant for voluntary reaching. [8]
For a newborn, crying is the only means of communication. Infants 1-5 months old have different tones of crying that indicate their emotions. Infants also begin laughing at this stage. At 6-7 months old, infants begin to respond to their own name, yell and squeal, and distinguish emotions based on the tone of voice of the parent.
Children are usually able to use a pincer grasp by the age of 9 to 10 months. [3] [4] Infants reach as early as 16 weeks of age and are able to perform certain actions that lead to grasping objects. The act of grasping is a two-stage motor skill that develops. The first stage, infants will reach out towards the desired object.
During this stage, children need vital nutrients and personal interaction for their brains to grow properly. Children's brains will expand and become more developed in these early years. Although adults play a huge part in early childhood development, the most important way children develop is through interaction with other children. [9]
By age 1, children are able to say 1–2 words, respond to their name, imitate familiar sounds and follow simple instructions. [131] Between 1–2 years old, the child uses 5–20 words, says 2-word sentences, expresses their wishes by saying words like "more" or "up", and understands the word "no". [131]
The academic field of infant cognitive development studies of how psychological processes involved in thinking and knowing develop in young children. [1] Information is acquired in a number of ways including through sight, sound, touch, taste, smell and language, all of which require processing by our cognitive system. [ 2 ]
Cognitive development is a field of study in neuroscience and psychology focusing on a child's development in terms of information processing, conceptual resources, perceptual skill, language learning, and other aspects of the developed adult brain and cognitive psychology.
Infants cry as a form of basic instinctive communication. [9] A crying infant may be trying to express a variety of feelings including hunger, discomfort, overstimulation, boredom, wanting something, or loneliness. Infants are altricial and are fully dependent on their mothers or an adult caretaker for an extended period of time. [10]