The purpose of this quasi- experimental, survey research was to examine the potential effects of frustration, low confidence, and inconsistent discipline, on the development of communication skills, and aggression in four year old children. This quantitative study utilized a cross sectional design, and participants included a convenience sample of 49 teachers, parents, and four- year old children from a public preschool in the southern United States. Data from the Parent Relationship Questionnaire and the Behavioral Assessment System for Children-2nd Edition were analyzed using...