- Parental favoritism is when one or both parents display consistent favoritism toward one child over another. This study aims to evaluate the impacts of parental favoritism on the personality and sibling relationship of the students of the Nueva Ecija University of Science and Technology, San Isidro Campus. The study used a descriptive research design that used a survey questionnaire to solicit data on the socio-demographic profile of respondents and to determine the respondents' perception about parental favoritism and its impact on their personality and sibling relationship. Analysis of the resulting survey data included descriptive statistics such as frequencies, percentage, mean and correlation. The study consisted of 89 students from Nueva Ecija University of Science and Technology, San Isidro Campus. The majority of them or, 53 (59.55%) were male, many or 27 (30.34%) had 2 siblings and most or 38 (42.70%) were the eldest. Regarding their perception of parental favoritism, they agreed that parental favoritism negatively affects an individual in mental, social, and emotional aspects. Furthermore, parental favoritism also affects their relationship with their siblings. Last, the different variables have a significant relationship with their perception about parental favoritism. For the conclusions, the impacts of parental favoritism on children’s personality and sibling relationships have been a significant issue in different fields, sectors, and even in the students' academics. Therefore, it is not a good decision to have parental favoritism on the family because of its effects on an individual.

Keywords : Parental Favoritism, Personalilty, Sibling Relationship