A psychologist collects data from a large number of people. She places each person on a continuum ranging from high to low conscientiousness and makes predictions about how people in the high range will act compared to those in the low range. This psychologist is using which approach to understanding personality

The correct answer is Nomothetic approach

In the nomothetic approach it is established in the process of attributing meanings to it, which are derived from its association with theories and other indicators. This process of attributing meanings is fundamentally qualitative, similar to the process of theoretical construction. We demonstrate how validity is not a property of instruments or procedures, but of the process of qualitative associations inferred based on observed relationships.