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0-2 month simple reflex activity such as gradsping,sucking
simple reflex activity such as gradsping,sucking -
primary circular reactions (2-4 monthgs) reflexive behavioirs occurs in stereotyped repetition such as opening and closing fingers repetitively
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secondary circular (4-8months) repetition of change actions to reproduce intersting conquences such as kicking ones feet to more a mobile suspened over the crib
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coordination of secondary reactions (8-12months) responses becomes coordinated into more complex sequences.actions take on a intentional character such as the infant reaches behind a screen to obtain a hidden object
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Tertiary circular reactions(12-18 months) discovery of new ways to produce the same consequence or obtain the same goal as the infant may pull a pillow toward him in an attempt to geta toy resting on it
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invention of new means through mental combinations (18-24 months) deferred imitation
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preoperational phase (2-4) increased use of verbal representation but aspeech is egocentric. the begining of symbolic rather than simple motor play.can think about something without the object being present
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intuitive phase (4-7) speech becomes social, they can focus on morre then one thing at a time, they can make better judgement calls on good or bad