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Cognitive Development. Piaget’s Sensorimotor Period. Piaget believed children’s cognitive development occurred in stages. The stages were brought on by biological maturation and environmental triggers The stages are: Sensorimotor (0 – 2 yrs ) Pre-operational (2 – 7 yrs.)
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Cognitive Development Piaget’s Sensorimotor Period
Piaget believed children’s cognitive development occurred in stages. The stages were brought on by biological maturation and environmental triggers The stages are: • Sensorimotor (0 – 2 yrs) • Pre-operational (2 – 7 yrs.) • Concrete Operational (7 – 11 yrs). • Formal Operational (11+ yrs.)
Sensorimotor Period • In infancy, children are in the sensorimotor period. At this stage, children learn through the senses. Cognitive development is built through the infant’s interactions with the environment. • There are six substages.
Substage 1: The use of reflexes • Age range: Birth to 1 month • Infants are born with inherited reflexes and it is through the reflexes that the infant begins to make meaning and build understanding. • Reflexes are highly stereotyped automatic behaviours that occur in response to specific stimuli.
Reflexes include: • Root reflex: when the corner of the baby’s mouth is stroked or touched the baby will turn toward the sensation and open his/her mouth. This helps the baby find the nipple to begin feeding. • Suck reflex: when the roof of the baby’s mouth is touch the baby will start to suck in order to feed. • Moro reflex: when the baby is startled, the baby will throw back the head, extend the arms and legs, cry, then pull the arms and legs back towards the body.
Reflexes continued: • Tonic neck reflex: when the baby’s head is turned to one side, the arm on that side stretches out and the opposite arm bends up at the elbow. • Grasp reflex: when the baby’s palm is stroked the fingers will close around the object. • Babinski reflex: when the baby’s foot is firmly stroked, the big toe will bend back toward the top of the foot and the other toes will fan out. • Step reflex: when the baby is held upright, it will take steps or dance if the feet are touching a solid surface.
Substage 2: Primary Circular Reactions • Age Range: 1 – 4 months • Circular reactions are repetitive behaviours. Primary circular reactions are behaviour that occur unexpectantly from reflexes. A reflex will engage the child in some form of behaviour. If the child finds that behaviour pleasurable, the child will repeat the behaviour. • Example: thumb sucking
Substage 3: Secondary Circular Reactions • Age range: 4-8 months • These reactions do not originate with reflexes, but are caused by unintentional occurrences, from the child interacting with the environment. • Example: an infant accidently hits a mobile above his/her head. The mobile spins and catches the baby’s attention. If they like it, the child will try to hit the mobile again.
Substage 4: Coordination of Secondary Circular Reactions • Age range: 8 -12 months • At this stage, infants are starting to understand that one circular reaction can be used to get another circular reaction. Behaviours that the child displays are not for a reason. At this stage, the child begins to gain a sense of cause and effect. • Example: The child will move a blanket to get to a rattle.
Object Permanence • Before substage 4, the infant doesn’t understand that an object out-of-sight continues to exist. • When object permanence occurs, the child realizes that the object still exists and will start to look for it. • Children who have achieved object permanence often demonstrate it through games like peek-a-boo.
Developing object permanence: • http://www.youtube.com/watch?v=cSGWh2CWJnA • Object permanence achieved: • http://www.youtube.com/watch?v=CQAMRlGyIXM
Substage 5: Tertiary Circular Reactions • Age range: 12-18 months • Infants will complete actions deliberately and with purpose. If the action is pleasurable, the child will repeat the action with some variation. • Example: A child beats on a pot with a wooden spoon, then beats on the floor, and finally on the refrigerator.
Substage 6: Coordination of Tertiary Circular Reactions • Age Range: 18 -24 months • Children begin to internalize behaviours and began to build mental symbols. This stage is when children are able to participate in pretend play. • Example: A child is pretending to cook and needs to “mix the ingredients” in a bowl. However, the child doesn’t have a spoon, so the child pretends to use a spoon or will use a similar object.