Exp 1 - Repeated measures. In one ear the list was repeated 35 times. The other ear had prose, this was the rejected messages.
Exp 2 - Independant measures. To find out the limits of attentional block. Participants shadowed 10 fictional passages. Rejected messages in the other ear. Moray wondered if you would hear the messages if your name was included.
Cherry (1953) researched the cocktail party phenomenon. He found that people that shaddowed a message in one ear did not hear the other message in the other ear.
30 seconds later they did a similar test as a control
Passages were read in a steady monotone voice at about 130 words per minute.
Divided attention is tested by dual-task technique. This makes their attention spilt instead of focusing.
The First exp is to test Cherry's findings, the second and third it to investigate other factors which can affect attention in dichotic listening
Results: There was no trace of material from the rejected message being recognised. The difference between the new material and the shadowed message material was significant.
Results: In affective group 20 out of 39 messages were heard. In non-affective group 4 out of 36 messages were heard.
Exp 3 - Independant measures. Required to shadow one of two simultaneous dichotic messages. Digits were added to the end of messages.
One group had to remember the content of the shadowed message at the end. The other group had to remember as many numbers as they could.
Results: After statistical analysis it showed that there was no significant results between the two groups