sentence: Both the practice and the main trials were blocked by dyad level , with the starting levels randomly chosen across participants.The pleasantness ratings of each participant were converted to z scores by subtracting the mean and scaling by the standard deviation of the scores given by that listener across all stimulus conditions ( Carcagno , Lakhani , Plack , 2019 , McDermott , Lehr , Oxenham , 2010 ) .