Quick Comparison
AAMC PREview is a rating-based exam. You read scenario sets and evaluate possible responses using four ratings: Very Ineffective, Ineffective, Effective, and Very Effective. The AAMC describes PREview as measuring relational skills and personal accountability, including communication, collaboration, empathy, ethical responsibility, reliability, resilience, adaptability, reflection, and continuous improvement.
CASPer is different. Official Acuity Insights sources describe CASPer as an open-response test with typed-response and video-response sections. Instead of choosing or rating listed responses, you explain your thinking in your own words.
That means PREview preparation is mostly about calibration. You need to learn how the exam distinguishes between ineffective, effective, and very effective behavior. CASPer preparation is more about expression: organizing a response, communicating judgment clearly, and becoming comfortable with typed and video formats.
Neither exam replaces the MCAT, GPA, clinical experience, service, letters, or the rest of the application. They give schools another data point about professional judgment and interpersonal reasoning.