Personality questionnaires are tools used to assess and measure individual personality traits and characteristics. They typically consist of a series of questions or statements that respondents answer, providing insights into their behaviors, preferences, and emotional responses. Commonly used in psychology, these questionnaires can help in various settings, including career counseling and personal development. Many personality questionnaires are based on established theories, such as the Big Five Personality Traits or the Myers-Briggs Type Indicator (MBTI). The results can help individuals understand themselves better and improve their interactions with others, making them valuable in both personal and professional contexts.