... finally sent to the response process stage, where the final product is made. Research evidence for Broadbent's model has come from Cherry. In Cherry's 'dichotic listening task', after participants were played two messages simultaneously. Cherry found that participants were able to notice if the voice was male or female. If the volume had changed from loud to soft, and so on. Basically participants were able to recognise certain physical characteristics of the unattended message, even though they didn't really know what the message was. The findings support Broadbent as it fits with the idea that both messages do receive minimal processing, to distinguish between the two channels. Research evidence going against the model, has come from Underwood. Underwood asked participants to detect digits presented on either the shadowed or the non-shadowed message. Naive participants detected on average 8% of the targets, but an experienced participant was able to detect ...

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