Abstract
The prevalence of unemployment in Nigeria has become a serious issue that needs urgent attention. This is because most unemployed youths tend to engage in many social vices that usually impinge on the security of the country. This study therefore examined the effectiveness of behaviour modification as a correlate for sustainable moral values and security in Enugu State, Nigeria. Two research questions and two null hypotheses guided the study. The correlation survey research design was adopted in the study. The study area was Plateau State, Nigeria. The study’s population covered all the 2,796 public primary school teachers in the State. A multistage sampling technique was employed in drawing a sample of 400 teachers for the study. Three instruments, the Child Behaviour Modification Questionnaire (CBMQ), the Questionnaire on Sustainable Moral Values (QSMV), and the Questionnaire on Sustainable Security in Nigeria (QSSN), with reliability indices of 0.77, 0.81, and 0.79, respectively, which were developed by the researchers, were used for data collection. The collected data were analyzed using regression analysis. The result showed that effective behaviour modification correlates with sustainable moral values and security in Nigeria. Furthermore, the study revealed that effective behaviour modification significantly (p < 0.05) correlates with sustainable moral values and security in Nigeria. It was therefore recommended that parents and teachers ensure proper modification of children’s behaviour to enhance sustainable moral values in Nigeria. The government, through the school authorities, should set out mechanisms for effective behaviour modification of children to promote security in Nigeria

Keywords
Behaviour modification, moral values, security