These tasks are auditory tasks that measure phoneme perception with manipulated amplitude envelopes (top) or formant trajectories (bottom) between sounds and was adapted from Goswami et al. (2011). Subjects hear 3 stimuli and must decide which sound was different from the others. Stimuli difference for both tasks begins at 195 ms and changes adaptively based on subject performance.
Total Items: Adaptive in 2 down, 1 up procedure
Completion Time: 8 minutes each
Dependent Variable: Threshold of Stimuli Difference (ms)
This task is programmed in PsychoPy. Please contact me for task usage.
Goswami, U., Fosker, T., Huss, M., Mead, N., & Szucs, D. (2011). Rise time and formant transition duration in the discrimination of speech sounds: the Ba-Wa distinction in developmental dyslexia. Developmental science, 14(1), 34–43. doi:10.1111/j.1467-7687.2010.00955.x