Student self-confidence is a psychological aspect influenced by various factors, one of which is family cohesiveness. This study aims to examine the relationship between family cohesiveness and self-confidence of 10th grade students of SMA Al-Islam Krian. The study used a quantitative approach with a correlational design, involving 132 students selected through a simple random sampling technique. The instruments used were a family cohesiveness scale based on David H. Olson's theory and a self-confidence scale based on Peter Lauster's theory, with data analysis using the Pearson Product Moment correlation test. The results showed a correlation coefficient value of r = 0.378 with p > 0.05, which indicates a positive but not statistically significant relationship, with a low level of correlation. This finding indicates that family cohesiveness has a limited relationship with student self-confidence, so there are other factors that play a role in its formation
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