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Concrete Operational Stage
* 7-11 years old
* Develop conservation- the understanding that the physical properties of an object do not change when appearances do, but nothing is added/ taken away.
*Perform regular mental operations, reversibility
*Ranging from 4-7 months
*Commonly repeatedly syllables- mostly vowel sounds
* B.F Skinner's 'The Learning Perspective'- children are encouraged by parents to repeat babbles that sound similar to words
Sources
*2-7 years old
* Egocentrism- inability to realize other viewpoints besides their own.
Ex. nodding when talking on the phone
*Irreversibility- inability to mentally backsteps when trying to solve a problem
* Think inanimate objects are alive
*Beginning motor development
*toysrus.com
*2-3 years
*Two word stage, important content words are used to express desires and ideas
* Mostly nouns and verbs
Piaget's Theory- Four Stages of Childhood cognitive development
Whole Sentence Speech
*3-6 years old
* Vocabulary grows, beginning to comprehend grammar rules, use functional words, syntax, semantics, etc
* Noam Chomsky's 'The Navitist Perspective'- langauge acquisition device (LAD) biologically programmed in all humans to gain knowledge
Formal Operations Stage
* Age 12+
Adolescents develop ability for abstract reasoning and hypothetical thought
Ex. algebra- Pythagorean theorem
* 12- 18 months
*Also known as the holophrastic phase
* First word- like 'mama or dada" usually occurs around 9-10 months
Daily Mail's Top 25 words every toddler frequently uses