Children in the age group of 5 to 14 years constitute 30% of the total population. Children undergo a
dynamic period of physical, mental, emotional, and social changes. These changes influence the
child's overall development, specifically the academic and social outcomes. The aim was to
evaluate the effect of educational guidelines on newly mothers' knowledge, practices regarding
behavioral problems of children. Subjects and method: Design: A quasi-experimental research
design was utilized to achieve the aim of this study. Setting: the study was conducted in the
pediatric outpatient clinic at Mansoura University Hospital. Subjects: A purposive sample of 50
newly mothers were included. Three tools were used: Tool (I) an interview questionnaire, Tool
(II) mothers ' knowledge regarding behavioral problems of children (pre/post), and Tool (III)
mothers ' practice regarding behavioral problems of children (pre/post). Results: The study result
showed that newly mothers' levels of knowledge regarding behavioral problems of children and
practice have dramatically improved after the implementation of the educational guidelines with
statistically significant differences between pre-post educational guidelines implementation. There
were statistically significant relations between newly mothers' level of knowledge regarding
behavioral problems of children and practice. Conclusion: The present study concluded that
educational guidelines implementation had a positive effect on improving newly mothers'
knowledge and practices regarding behavioral problems of children. Recommendations: The study
recommended educational guidelines regarding behavioral problems of children should be
conducted, discussed, integrated into the educational programs, and taught to the newly mothers
using the booklet and illustrated pamphlets for each one to improve their knowledge and practices.