Dichotic listening task. Describe it. Why did early results from this task support Broadbent's filter model?

Dichotic listening task. Describe it. Why did early results from this task support Broadbent's filter model?

It is a task in which different messages are presented to each ear. The particpants are instructed to select attention to one ear (attended message), repeatit out loud (shadowing) and to ignore the message presented to the other ear (unattended message). Shadowing ensures that a particpant is selecting his/her attention to the attended message. When asked to recall the message to the unattended ear, participants were merely able to distinguish if they heard a male or female voice, but not the content of the message. These results are in line with Broadbent's filter model because it suggests that unattended content is not processed beyond the "filter". However, the "filter" does allow a distinction between a female and male voice.

Dichotic listening is literally listening with “two ears.” Cherry played competing speech inputs through headphone to 2 ears of his participants, where the left ear had a different speech input than the right ear. This is similar to what we did in class with reading out loud a story (ended up in quack quack). Finding was that participants had no memory of what was played in the unattended ear. His findings support the filter mode as unattended inputs are filtered out and attended signals are admitted through on the basis of its physical characteristics.

The human being have two ears. However they can only listen to an information with one ear. Dichotic listening task is when there are two messages present to each ear simultaneslouy. Broadbent's filter model experiment told us, that we can listen only to one information at a time and the other was completly negletced. From this he could conclude, that there has to exist a filter which "decides" which informations can come to STM and which one will vanish without our conciousness.