Abstract
The main purpose of this research is to analyze the attachment styles of men and women from 20 to 40 years old (early adulthood) and from 40 to 65 years old (middle adulthood) who are in a romantic relationship and live in the City of San Francisco Campeche. A sample of 50 men and 50 women in early adulthood and 50 men and 50 women in middle adulthood was selected, and the questionnaire "Styles of Attachment" was applied. For the data analysis, we used the SPSS version 23 program along with student's "t" and X(2) (Chi(2)) tests. The results show no significant differences in attachment styles between male and female relationships. However, with respect to the stages analyzed, significant differences are found in attachment styles. In addition, there are significant differences with respect to the type of relationship: single people have secure attachment while married people display anxious attachment. We conclude that in early adulthood, secure attachment predominates, while in middle adulthood anxious attachment predominates.