The Big Five Personality Traits and Marital Satisfaction Among Couples in Kilungu Deanary in Catholic Diocese of Machakos in Makueni County, Kenya

Marital satisfaction is a key indicator of happiness and stability in marriage, yet modern family life faces significant challenges, including rising divorce rates, declining marriage prevalence, increased cohabitation, and the complexities introduced by same-sex marriage legalization. This study examines the Big Five personality traits and their relationship with marital satisfaction among couples in Kilungu Deanery, Catholic Diocese of Machakos, Makueni County, Kenya. The research objectives included assessing the prevalence of these traits, evaluating marital satisfaction levels, identifying factors affecting satisfaction, and exploring ways to enhance it. Grounded in the Five-Factor model of personality and Bowenian family systems theory, the study utilized a correlational research design with a sample of 178 married individuals (90 males and 88 females) aged 30 to 67, each married for at least five years. Data were collected using the Big Five Inventory and the ENRICH Marital Satisfaction Scale, and analyzed with SPSS version 25. Findings revealed that Extraversion correlated positively with the Idealistic Distortion scale but showed no significant correlation with marital satisfaction or dissatisfaction. Agreeableness and Conscientiousness were positively associated with marital satisfaction and negatively with dissatisfaction. Conversely, Neuroticism was negatively correlated with marital satisfaction and positively with dissatisfaction. Openness correlated positively with marital satisfaction but not significantly with dissatisfaction. The study recommends that government and religious organizations offer family life counseling and premarital education to improve partner compatibility and reduce failed marriages.