Holistic perspectives in career development have focused attention on complexity as important for counselors using assessment techniques. Increased emphasis on subjectivity has resulted in greater focus on qualitative measures versus traditional psychometric tests. These developments reflect issues such as the idiographic-nomothetic distinction and individuals' being and becoming. The author uses a card sort technique to show how some of these issues might be addressed in the context of seeking a more comprehensive assessment for addressing the challenge of assessing complexity. Specifically, complexity is assessed in terms of traits, unique patterns of preferences, personal constructs, idiosyncratic likes, and the potential for change.