Workers from public and private organizations in Mexico City were invited to participate in the study. The psychological tests were filled during working hours from 9:00 to 18:00 hours. To each participant, the purpose of the investigation and the voluntary nature of participation was explained through the informed consent form. This form guaranteed confidentiality and their right to leave the study if they wished, it also contained details about the benefits and risks of this research. A member of the research team was always present during the test application to answer questions, and verify that the instrument was answered properly. At the end, we thanked them for their participation, provided them with a brief explanation of the research, and informed them that no private information will ever be disclosed as their participation was anonymous.