Re: Instruction for subjects

[Pierre Divenyi <pdivenyi@xxxxxxxxx>]

Fatima,

Is there a gap/noise burst in both stimuli of the trial? If yes, I 
would ask the question "Were the breaks in the glide identical?" If 
only one of them had the break, tell them "One of the glides have a 
break -- ignore it and just decide if the two glides were the same or not".

Pierre

At 10:42 AM 10/25/2005, FATIMA HUSAIN wrote:
> Dear List
>
> I am running some pilot behavioral studies of auditory continuity illusion
> (aka temporal induction).
> The sounds are FM sweeps with gaps or noise-inserted gaps.
> For various reasons I am running them as "same/different" trials, 
> wth the first sound of the trial being a regular FM sweep and the 
> second one being
> the modified FM sweep.
>
> When I ask the subjects, "Is the second sound as continuous as the 
> first sound?" they become confused.
>
> Even FM sweeps with much-louder noise inserted in the gap are 
> considered by some subjects to be not very continuous. (contrary to literature)
>
> How do I change my instructions (basically, the confusion is around the
> word 'continuous')? Or change the task?
>
> Any ideas?
>
> Thanks
>
> Fatima T. Husain, Ph.D.
> NIDCD/NIH
> Bldg. 10/ Room 8S-235D
> Phone: 301-594-7758