What is one criticism mentioned in the text regarding piaget's explanation of object permanence? infants' mistakes were due to

These errors were due to poor memory development and an immature memory. Children at this age do not have the memory skills developed to be able to recall objects, if they were removed or otherwise obscured from view, and found these objects to be novel when they reappeared.

Currently, as of february 2016, an american traveling in france would be by the exchange rate. the weakness of the euro and the strength of the us dollar means that items in france cost less to an american than they otherwise would. of course, if this trend reverses and the us dollar weakens and the euro strengthens, such as was happening in early 2008, an american traveling in france would have an adverse experience because items would cost relatively more.