HOMEWORK what isthe ACHEVEMENTSand LIMITATIONS associated with Piaget's SENSORIMOTOR stages??? HELP PLEASE!!!

Not sure if this will help but here is a portion of the information I have...

"Piaget has made monumental contributions to our understanding of cognitive development; but while research has supported some of his claims, it has challenged others. According to Piaget, the journey from reflex behavior to the beginnings of thought is a long, slow one. For a year and a half or so, babies learn only from their senses and movements. Not until the last half of the second year do they make the breakthrough to conceptual thought. Today there is growing evidence that some of the limitations Piaget saw in infants' cognitive abilities may instead have reflected their immature linguistic and motor skills. Researchers using simplified tasks and modern research tools have built an impressive case for babies' cognitive strengths.

"For example, Piaget may have underestimated young infants' grasp of object permanence behavior of his testing methods. Babies may fail to search for hidden objects because they cannont yet carry out a two-step sequence of actions, such as moving a cushion or lifting the ocver of a box before grasping the object. When object permanence is tested with a more age-appropriate procedure, in which the object is hidden only by darkness and thus can be retrieved in one motion, infants in the third substage (4 to 8 months) perform surpirsingly well. In one study of pbject permanence, 6 1/2-month-olds saw a ball drop down a chute and land in one of two spots, each identifiable by a distinctive sound. When the light was turend off, and the procedure was repeated, the babies reached for the ball in the appropriate location, guided only by the sound (Goubet & Clifton, 1998). This showed that they knew the ball continued to exist and could tell where it had gone."

Piaget Sensorimotor Stages