1. Contributions of Negative Emotions and Private Speech to 48-Month-Olds’ Task Persistence Open Access Author: Ratcliff, Kizzann Ashana Title: Contributions of Negative Emotions and Private Speech to 48-Month-Olds’ Task Persistence Graduate Program: Psychology Keywords: preschoolersspeechemotionvygotskysurvival anlaysis File: Download Ramsook_Masters_Defense_to_Grad_School_UPDATED.pdf Committee Members: Pamela Marie Cole, Thesis Advisor/Co-AdvisorKaren Linn Bierman, Committee MemberJanet van Hell, Committee Member