Objective: The purpose of this study is to analyze the structural relations between infant teachers’ career, efficacy, sensitivity, and the development of their professionalism.
Methods: Data were collected from 320 infant teachers working at day care centers in Gyeonggi-do and Seoul. The collected data were applied to SPSS 22.0 program. With the data, correlation analysis and structural equation model analysis were conducted.
Results: Firstly, infant teachers’ career didn’t influence the development of their professionalism directly, but indirectly affected their efficacy and sensitivity. Secondly, the variables that directly affected the development of their professionalism were teacher efficacy and sensitivity. Thirdly, teacher efficacy and sensitivity had full mediation between their career and the development of professionalism.
Conclusion/Implications: Infant teachers’ career affected the development of their professionalism through teacher efficacy and sensitivity. Based on the result, a plan for developing infant teachers’ professionalism was proposed, and suggestions of follow-up research were discussed.