eISSN 2776-3161 © 2021 Penulis. Dibawah lisensi CC BY-SA 4.0. Ini adalah artikel Akses Terbuka yang didistribusikan di bawah ketentuan Creative Commons Attribution (CC BY), yang mengizinkan penggunaan, distribusi, dan reproduksi tanpa batas dalam media apa pun, selama penulis dan sumber aslinya disebutkan. Tidak diperlukan izin dari penulis atau penerbit. JOURNAL OF NONCOMMNUCABLE DISEASE Volume 1 (1), 7-17 http://dx.doi.org/ 10.52365/jond.v1i1.221 http://jurnal.poltekkesgorontalo.ac.id/ Factors Associated with Sibling Rivalry Behavior in Toddlers Rabia Zakaria 1 , Yusni Podungge 1 , Rahma Dewi Agustini 1 * 1 Midwifery Department, Health Polythechnic of Gorontalo; *Corresponding Author : Rahma Dewi Agustini Midwifery Department, Health Polythechnic of Gorontalo rahma.senior@gmail.com Abstract: Sibling rivalry is a form of relationship conflict with siblings that can affect individual development, both positively and negatively and give impact on the child, parents, and society. Puskesmas Kabila is one of the health centers in Bone Bolango Regency, Gorontalo, which has the lowest achievement of health services for children under five, namely 61.1% in 2019 and as many as 70% of mothers who have more than one toddler tend to experience sibling rivalry. This literature study aims to determine the factors associated with the behavior of sibling rivalry in toddlers. This literature study research was conducted by examining 13 literatures consisting of 8 journals and 5 books. The results will be analyzed descriptively. The independent variable in this study is the factors examined in research journal articles, while the dependent variable is the behavior of sibling rivalry in children under five. The research instrument used was a data table to make it easier to interpret the results of a literature study. The results of the literature study show that the factors associated with sibling rivalry include: parenting styles, emotional intelligence, parental knowledge, differences in gender and age as well as parents' attitudes towards children. Keywords: Sibling rivaly; Toddler; Kabila Health Center; Growth and Development 1. Introduction Sibling rivalry is competition between siblings (siblings with siblings, siblings with step siblings, and half siblings with half siblings) in the form of jealousy or hatred which causes uncomfortable feelings in children due to the presence of strangers who were not there before (Susilaningrum et al. 2015). The reactions that arise are in the form of aggressive attitudes such as pinching, hitting, injuring their younger siblings and even kicking them and can also occur in children such as wetting the bed, spoiled, fussy, crying until exploding, and crying without cause (Rosyida, 2017) Sibling rivalry is influenced by several factors, including: (1) gender differences, sibling rivalry is more common in children who have the same sex as their siblings, (2) differences in children's age, the most likely age gap is at a range of ages 1- 3 years, (3) birth order, all incidents occurred in the first child, (4) parenting style, authoritarian parenting was much greater in triggering sibling rivalry. (Hanum and Hidayat 2015, Rahmawati 2015, Rosyida 2017). If sibling rivalry is not handled in early childhood it can cause delayed effects, besides (Putri et al. 2013) state that there are three impacts of sibling rivalry, namely the impact on children, parents and society. Regulation of the Minister of Health of the Republic of Indonesia No. 4 of 2019 targets 100% of the achievement of the detection service for the development of children Review Article Received : January 21, 2021 Revised : February 5, 2021 ePublished : April, 17, 2021