Objectives: This study aims to confirm the stability of temperament in the early stages of life and the influence of warm maternal parenting by categorizing the temperament of children aged 1-3 years and examining the transition pattern of temperament type according to age. Methods: The subjects were 1,377 infants aged 1-3 years (672 boys and; 646 girls) from the Panel Study on Korean Children (PSKC) between 2010-2012 (3rd-5th year). The collected data were analyzed using Pearson's right-rate correlation analysis, latent profile analysis, latent transition analysis, and nominal logistic regression using SPSS 25.0 and Mplus 8.3 programs. Results: First, the temperament types of children aged 1-3 years were consistently classified into three categories across all ages: shy (Class 1), easy (Class 2), and active (Class 3). Second, across all ages, there was a 72.0% probability that children aged 1-3 years would remain in the same temperament type, while there was a 28.0% probability of transitioning to a different type. Third, a child who is active at the age of 2 is more likely to remain active at the age of 3, rather than transitioning to a shy type, especially if the mother exhibits warm parenting behavior. Conclusion: This study statistically confirmed that temperament ty...