Robbie Case proposed that change within each Piagetian stage and movement between stages are largely due to __________.
A) an abrupt stagewise transition that is influenced by biological age
B) gains in the efficiency with which children use their limited working memories
C) the influence of older peers or adults who model more complex cognitive schemes
D) a spontaneous shift from concrete operational thinking to formal operational thought
Question 2
Some investigators have concluded that the forms of logic required by Piagetian tasks do not emerge spontaneously but, rather, are __________.
A) heavily influenced by training, context, and cultural conditions
B) primarily developed through interaction with more expert peers
C) part of a slow but steady stagewise transition to logical thought
D) influenced by biological age and mastered all at once
Piercey-Normore and DePriest discovered that some lichens readily change partners.
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