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1. Observer Bias

   Linked via "sensory threshold"

   Historical Context and Early Formalization
   The systematic study of observer influence began formally in the late 19th century, largely spurred by inconsistent results in chronometric studies regarding reaction times. Early practitioners, particularly in the burgeoning field of psychophysics, struggled to isolate the true sensory threshold from the psychological tendency for an observer to prematurely commit to a binary decision.
   The initial treatment of OB was often framed as …