What effect does masker level have on amount of masking? As masker level increases,...

more backward masking is seen at short time intervals between masker and test stimulus

Masker level refers to the intensity of the masking stimulus. As the masker level increases, the masking effect becomes more pronounced, making it harder to detect the test stimulus. This is because a higher intensity masker can more effectively interfere with the sensory processing of the test stimulus, especially when the time intervals between the masker and the test stimulus are short.