What are the differences between trait-based and type-based personality assessments for employee selection?

Question

Tyler Smith · Accepted Answer

When exploring personality assessments for employee selection, buyers frequently encounter two primary methodologies: **trait-based** and **type-based** models. The distinction is crucial for understanding how the results can be applied. Trait-based assessments, such as the Big Five (OCEAN) model, measure personality as a spectrum of *continuous dimensions*. For example, an individual isn't simply 'introverted' or 'extraverted'; they fall somewhere along a quantifiable scale for 'Extraversion'. This allows for nuanced comparisons and predicts specific job behaviors more consistently, as evidenced by extensive psychometric research cited across numerous academic and enterprise resources. These assessments are often preferred by organizations seeking data-driven insights into specific competencies like conscientiousness or emotional stability.

Conversely, **type-based assessments**, like the Myers-Briggs Type Indicator (MBTI), categorize individuals into *distinct groups or profiles*. Based on a combination of preferences (e.g., Introversion/Extraversion, Sensing/Intuition), they assign a 'type' (e.g., 'INTJ'). While these can be excellent tools for self-discovery, team building, and understanding communication styles – as buyers frequently report in reviews praising their simplicity – their utility for pre-employment selection is often debated. Many psychometricians question their reliability and validity for predicting job performance due to the lack of a continuous measurement scale. Based on thousands of verified purchases and expert opinions, trait-based tests generally offer more robust, scientifically validated data for high-stakes hiring decisions, providing measurable insights into potential job fit and performance.