1.A developmental psychologist (e.g. Jean Piaget) who bases his conclusions on i

1.A developmental psychologist (e.g. Jean Piaget) who bases his conclusions on intensive study of one child or a few individuals is using the ______ method.2.In a(n) ______ the scientist deliberately changes one variable and measures the change in some other variable.3.Though Jesse spent most of his growing years in a succession of foster homes after enduring abuse and neglect his disposition in cheerful and his relationships are healthy and fulfilling. According to developmentalists he exhibits ______ (the ability to overcome or bounce from adversity) despite his early experiences.