Forced-choice paradigms present one signal amid two or more observation intervals.

Evidence

In a forced-choice paradigm, at least two, but sometimes more, observation intervals are presented. Only one randomly chosen interval contains the signal (the signal-present interval); all other intervals do not (the signal-absent intervals). Listeners select which interval contains the signal, and they will be either correct or incorrect. — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 316

Categorization

• DEFINE: Defines the forced-choice paradigm structure underlying psychophysical threshold estimation.