These individuals would have been using a method called "objective introspection."
Introspection is frequently utilized in ordinary dialect to allude to the way toward searching internally, yet the term additionally applies to a more formalized process that was once utilized as an exploratory procedure. The test utilization of introspection is like what you may do when you break down your own particular musings and sentiments yet in a substantially more organized and thorough way.
Objective introspection refers to the procedure of objectively inspecting and estimating one's own considerations and mental exercises.
