HD FS 229 Lecture Notes - Lecture 13: Apache Hadoop, Egocentrism

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HDFS 229
Dr. Sarah Kollat
Lecture 13
Piaget’s Stages of Development continued
Preoperational Period (2-7 years old)
Achievements
Huge gains in mental representations
oLanguage (age 2)- vocabulary and language grows rapidly
Without mental representations, we cannot have language
oMake believe play
More complex imaginary play, disassociate imagination with real world
Sociodramatic play (5 years old)- imaginary world of child can play with
imaginary world of other children
oDrawing- more realistic, mental imagery is more detailed/realistic
oDual Representation- viewing a symbolic object as both an object and a symbol
Paper map- a colorful paper but also symbolizes streets
Helps us use things more effectively
Limitations
This stage is better identified by it’s limitations
oCannot preform mental operations
Mental representations are inner processes of actions that obey logical
rules
oEgocentrism
Not being able to take another’s perspective
Broccoli study
3 mountains task
3 mountains of different sizes
oChild stands on one side and sees one perspective
oAsk what person on the other side sees and they say that
they see exactly the same as what they see
“What makes me feel good, makes you feel good”
oCannot conserve
Understanding that some physical characteristics will remain the
same even when the appearance changes
Centration- getting fixated on one aspect of a problem, ignoring other
variables
Irreversibility- not mentally being able to go backwards in time and
different steps
Liquid- tall glass and short glass; they get fixated on height and
believe that it isn’t the same amount
oLack Hierarchal Classification
Objects belong to mental not visual categories
Class inclusion problem
Do you have more yellow flowers or flowers? They say yellow
Concrete Operational Period (7-11 years)
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Document Summary

Huge gains in mental representations: language (age 2)- vocabulary and language grows rapidly, make believe play. Without mental representations, we cannot have language. More complex imaginary play, disassociate imagination with real world. Paper map- a colorful paper but also symbolizes streets. This stage is better identified by it"s limitations: cannot preform mental operations. Mental representations are inner processes of actions that obey logical rules: egocentrism. Not being able to take another"s perspective. 3 mountains of different sizes: child stands on one side and sees one perspective, ask what person on the other side sees and they say that they see exactly the same as what they see. What makes me feel good, makes you feel good : cannot conserve. Understanding that some physical characteristics will remain the same even when the appearance changes. Centration- getting fixated on one aspect of a problem, ignoring other variables. Irreversibility- not mentally being able to go backwards in time and different steps.

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