Question

Which of the following predicts how and when one will detect the presence of weak stimuli amidst background noise?

Weber’s theory
absolute threshold
Weber’s law
signal detection theory

Answer 1

The correct choice is **signal detection theory**. This theory explains how and when we can detect the presence of weak stimuli (signals) amidst background noise. It takes into account not only the sensitivity to the signal but also the decision-making processes involved in distinguishing it from noise.