The issues of toddler boom and improvement that want for use as a reference withinside the detection encompass 10% of youngsters reaching early age abilities, 50% of youngsters will attain their abilities, 75% of youngsters will gain extra abilities, 90% of youngsters could have on the way to attain the age restriction on the present-day still. However, some time ago, they encountered several growth and development problems which were quite worrying for preschool children. Objectives: This

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... was to determine the accuracy of developmental outcomes for children aged 0 – 72 months between the Guide to the Kuesioner Pra Skrining Perkembangan (KPSP) and the Denver Developmental Screening Test II (Denver II). Questioner Pra Skrining Perkembangan (KPSP) and the Denver Developmental Screening Test II (Denver II) have a good result, valid and reliable to view developmental outcomes for children aged 0 – 72 months in Dadok Primary Health Center. Methods: The research method used is analytic with the design used being cross-sectional, then the Cohen's Kappa coefficient statistical test is carried out. The research sampling technique used purposive sampling as many as 56 children aged 0-72 months with exclusion criteria, namely children who were sick, had physical disabilities, and experienced other developmental disorders that could not be measured with the KPSP and Denver II instruments. The research into finished from December 2020 to December 2021. Results: The effects of this examination discovered that the improvement of youngsters elderly 0-72 months turned into nevertheless in the precise or everyday category. This may be visible from the effects of developmental tests on the usage of the KPSP and Denver II instruments, each of that has equal effectiveness for use in assessing improvement in youngsters. This is evidenced by the results of the Cohen's Kappa coefficient statistical test with a Kappa value of 0.638 which means it is good (0.61-0.80). Conclusion: It is expected for parents to implement an early detection program for child development by the child's ability at home. Parents are expected to attend seminars or training on growth and development according to the child's age level. invite the child to be more diligent in moving, provide stimulation to the leg muscles, or take the child to therapy so that it can be handled properly.