The present study aimed to analyse the factor structure of the Melbourne Decision Making Questionnaire (DMQ-II), and to examine the relationships between the factors identified and Self-confidence, in order to conceptualize the decision-making process in adolescents under the Conflict Model of Decision Making. Participants were 992 Mexican high-school students, aged between 15 and 19 years. The three factors were identified as decision-making patterns in adolescents: a) Vigilance, b) Hipervigilance/Procrastination and c) Buck-passing. The Self-confidence showed a positive effect on Vigilance, and a negative effect on theother two patterns. Results are discussed considering the literature on decision making in adolescence.

El presente estudio se propuso analizar la estructura factorial del Cuestionario Melbourne sobre Toma de Decisiones, y estudiar las relaciones entre los factores identificados y la Auto-confianza, con la finalidad de conceptualizar la toma de decisiones de los adolescentes en el marco del Modelo de Conflicto de Decisión. Los participantes fueron 992 estudiantes mexica-nos de bachillerato con edades entre 15 y 19 años. Se identificaron tres factores interpretados como patrones de toma de decisiones en adolescentes: a) Vigilancia, b) Procrastinación/Hipervigilancia y c) Transferencia. La Autoconfianza resultó tener un efecto positivo sobre Vigilancia, y un efecto negativo sobre los otros dos patrones. Se discuten estos y otros resul-tados considerando la literatura sobre toma de decisiones en la adolescencia.

The present study aimed to analyse the factor structure of the Melbourne Decision Making Questionnaire (DMQ-II), and to examine the relationships between the factors identified and Self-confidence, in order to conceptualize the decision-making process in adolescents under the Conflict Model of Decision Making. Participants were 992 Mexican high-school students, aged between 15 and 19 years. The three factors were identified as decision-making patterns in adolescents: a) Vigilance, b) Hipervigilance/Procrastination and c) Buck-passing. The Self-confidence showed a positive effect on Vigilance, and a negative effect on theother two patterns. Results are discussed considering the literature on decision making in adolescence.