Investigation of peer bullying in the pre-school period studies carried out in Turkey between 2000 and 2020

This research aims to examine the studies on peer bullying in the preschool period completed between 2000 and 2020 in Turkey. The sample of the research consists of 32 studies, including 18 theses and 14 articles. According to the findings, it was determined that master's theses were more than doctoral theses. In the distribution by years, it is seen that the most theses were prepared in 2017 and 2019, and the most articles were prepared in 2019 and 2020. It was determined that the most thesis on the subject was prepared at Gazi University. In the distribution by provinces, it was determined that the most thesis on the subject was completed in Ankara, and the articles were completed in Denizli. All of the theses and most of the articles are in Turkish. It was determined that the most frequently used keyword in the theses examined was "bullying" and "peer violence" in the articles. While the quantitative research approach is preferred the most in theses and articles; qualitative approach was not found in doctoral theses, and the mixed approach was not found in master's theses and articles. Descriptive and correlational survey model were used the most in theses, and correlational survey model was used most in articles. The most common sample group in theses and articles is "preschool children". It was determined that the articles were more diverse than the theses in terms of sample group number ranges. The most common sample selection method in the theses is purposive sampling and simple random sampling in articles. In theses and articles, 3 measurement tools are used the most frequently; and the data collection tool is the most frequently used scale. The cross-sectional method was used in all theses and most of the articles. It has been determined that the most preferred topic in theses and articles is demographic variables (age, gender, sibling variables, birth order, parental age, parental education level, body mass index, parental occupation, family type, duration of pre-school education, socioeconomic level, parental marital status, family structure, professional experience of teachers). Keywords: Preschool Period, Peer Bullying, Bullied Children, Victim Children, Peer Relations