Figure 2.

Timeline of the standard adaptive (recall) procedure and self-assessed Békesy (rate) procedure. During the recall procedure, participants were instructed to recall a Matrix or LIST sentence immediately after the sentence was presented. For the rate procedure, the Matrix and LIST sentences were concatenated into trials of ± 2 min each and presented at a fixed SNR. On listening, participants did not have to rate their speech intelligibility after every sentence but instead could listen to several sentences and consciously rate at their own pace by pressing one of the two buttons (<50% or >50%) at any moment. After rating, the sentences from the current trial were immediately stopped, the SNR was adapted and the next trial was initiated. For the stories, the method was the same except that different 1-min sections of the stories were presented per trial.

Note. LIST = Leuven intelligibility sentence test.