Big Five Personality Traits

A widely used psychological model that describes human personality along five trait dimensions: Openness to Experience, Conscientiousness, Extroversion, Agreeableness, and Neuroticism. Originally developed in personality psychology, it has been adopted in human-robot interaction and assistive technology design as a framework for specifying robot personalities and predicting user acceptance. In accessibility contexts, the Big Five has been critiqued as an inaccessible design tool: it assumes users can understand and translate abstract trait labels into concrete robot behaviours, which can be cognitively demanding for people with cognitive impairments, and it captures neither lived experience nor cultural context — both of which strongly influence how a user perceives and relates to an assistive device.