Fechner's Important Insight of October 22, 1850 Was That

Multiple Choice

Fechner's important insight of October 22, 1850 was that

A) psychology could be an empirical science by carefully training observers in the method of introspection
B) it was possible to measure absolute and difference thresholds with great precision
C) the relationship of the psychological and physical worlds could be measured
D) individual differences accounted for most psychological variability