Gestalt psychologists were more interested in c.organization of perception which is the answer. They do like how a whole which is organize forms out of the component pieces. Hope this is the right answer and would be of big help.
"different ears"
According to <span>Broadbent's study, depending on which ear the stimulus was done, one of the channels were used. If both ears were used then there was a channel-swapping phenomenon that proved his theory of auditory attentional selection.</span>
The answer is Chronic<span> Stress</span>
