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100

the words a person uses in talking or writing

Active Vocabulary 

100

the ability to tell how far away something is

Depth Perception 

100

 sounds all in a single pitch

Monotone

100

the words a person understands but does not say

Passive Vocabulary 

100

the words a person understands and uses

Vocabulary 

200

the act or process of knowing or understanding

Cognition 

200

copying the actions of someone else

Imitating 

200

the ability to learn that an object stays the same from one time to the next

Object Identity

200

process of developing perception

Perceptual Learning 

200

being able to express imaginative ideas in a unique way

Creativity 

300

an idea formed by combining what is known about a person, object, place, quality or an event

Concept

300

changes of pitch

Inflections 

300

the ability to learn that objects remain the same even if they appear different

Object Constancy 

300

organizing information that comes through the senses

Perception 

300

ability to pay attention

Concentration 

400

to make a series of vowel sounds with consonant sounds slowly added to form syllables

Babble

400

a light, happy sound babies begin to use to communicate between six and eight weeks after birth

Coo

400

the ability to understand that an object, person or event is separate from one’s interaction with it

Object Concept 

400

repeating the same syllable over and over again

Reduplication Babbling

400

 the ability to store and recall information, ideas and events

Memory

500

type of vision that involves fusing an image so it appears as one image using both eyes

Binocular Vision

500

how people learn, what they learn and how they express what they know through language. During the 1st year of baby’s life this happens as quickly as physical development

Intellectual development 

500

the ability to learn that people, objects, and places still exist even when they are no longer seen, felt or heard

Object Permanence 

500

piaget’s first stage of cognitive or intellectual development

Sensorimotor Stage

500

 an agent such as light or sound that directly influences the activity of the sense organs

Stimuli