Which trait from the Big Five personality traits indicates reliability and organization?

Conscientiousness is the trait within the Big Five personality model that reflects an individual's degree of reliability, organization, and dependability. People high in conscientiousness tend to be disciplined, goal-oriented, and prefer to plan ahead rather than being spontaneous. This trait encompasses aspects such as diligence, carefulness, and the ability to follow rules and fulfill commitments, which all contribute to an organized approach to tasks and responsibilities.

In contrast, openness relates to a person's willingness to experience new things and embrace novel ideas, agreeableness involves the degree of friendliness and cooperativeness towards others, and extroversion pertains to the extent to which someone is outgoing or enjoys social interaction. Each of these traits captures different dimensions of personality, but only conscientiousness specifically aligns with the qualities of reliability and organization.