The Young Schema Questionnaire was developed by Young (1990) to assess early maladaptive schemas. From then on the author has made theoretical revisions of the schemas and their clustering, leading to different versions of the Questionnaire. A sample of 1419 students was randomly taken from a representative university student population in the city of Medellin, Colombia, to establish the psychometric properties and structural validity of the YSQLF 2 nd edition. The findings indicate that the questionnaire is organized in eleven factors explaining 65% of the variance. The factors found were: Abandonment, Insufficient SelfControl/Self Discipline, Mistrust/Abuse, Emotional Deprivation, Vulnerability to Harm or Illness, Self-Sacrifice, Unrelenting Standards (seventh and eight factors), Emotional Inhibition, Entitlement and Enmeshment. In conclusion, the data obtained validate the existence of an eleven factor model for the Young Schema Questionnaire Long Form ‐ Second Edition for the selected population in the city of Medellin, Colombia.