Temperament: Why children can be so different November 3, 2020 ICYMI If two kids grow up in the same environment, how can they be so different? In most cases, the answer is temperament, said Mackenzie DeJong, a human sciences specialist in Iowa State University Extension and Outreach. Read More Contact Details: Name: Mackenzie DeJong Phone: 712-541-8737 Email: mldejong@iastate.edu Department: in Human Sciences Extension and Outreach Announcements