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Cory is 4 in a half years old and has been attending preschool 4 days per week. Up until the birth of his
baby sister, he had been happy to go to school. For the last 3 weeks, however, he has started to cry and
cling to his mother each morning right at the time he is supposed to leave for school. Cory's mother
expresses concern that cory is regressing.
1 - ) What suggestions can you offer his mother with regard to this new behavior?
2 - ) At what other times in preschoolers' lives might they regress temporarily.
3 - ) At which stage of cognitive development is cory?