Infant development
Rooting
Morrow
Labyrinthine
Grasping
Swimming
The first cell divides in two.
Motor, sensory, learning originates.
The fetus experiences rapid growth.
The physical appearance of the embryo is clearly human.
12 weeks
10 weeks
8 weeks
6 weeks
Conceptual
Fetal
Embryonic
Chemosensation
Sight
Pain
Touch
Self is distinct
Gearing actions for the future
Finding new ways to get to one's goal
Means-ends problem solving
6-8 months
11-15 months
9-10 months
16-18 months
5-10 weeks
10-20 weeks
22-24 weeks
26-28 weeks
Secondary circular reactions
Modification of reflexes
Beginnings of thought-mental representation
Primary circular reactions
Invents new means via mental representation, imagining what will happen mentally before trying it out
Novelty and exploration, deliberate trial and error
Coordinated and intentional, means to an end, there is an intentional goal in mind
Adjusts reflexes to meet needs in certain situations
Deferred circular reactions: infant's object oriented play activity was interrupted, then infant resumes act
Interrupted prehension: re-acquire an object when briefly out of sight
Reconstruction of an invisible whole from a visible fraction: retrieves object partially covered
Removal of obstacles preventing perception: pulls object away to recover x
Category development
Category creation
Category formation
Category possession
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