Explain the Background? Cherry
The cocktail party effect?
Cherry’s method of shadowing one of two dichotic messages for his study of attention in listening, found participants who shadowed a message presented to one water ignorant of the content of a message simultaneously presented to the other ear.
3 aims?
Describe the sample?
Exp 1/2/3
Undergraduates and research workers of both genders.
Experiment 1 = ?
Experiment 2 = 12
Experiment 3 = 28
Total = 40
Research method?
EXP 1 - Cherry
Design?
IV? (2)
DV?
EXP 1
Procedure?
EXP1
results?
Words in shadowed message (mean) - 4.9/7
Rejected message (mean) - 1.9/7
Words presents first time (mean) - 2.6/7
SCORED HIGHER IN SHADOWED MESSAGE THAN REJECTED MESSAGE
EXP2
Design?
IV?
DV?
Design - repeated measures design
IV - affective vs non affective messages (whether or not instructions were prefixed by the participants own name.
DV - number of affective instructions that were responded to.
EXP 2
Procedure?
EXP2
Results?
Times heard / affective = 20 out of 39
Times heard / non affective = 4 out of 36
EXP 3
DESIGN?
IV? (2)
DV?
AIM?
1.independent measures
2. Whether digits were inserted into both messages or only one
- whether participants had to answer questions about the shadowed message at the end of each passage or whether participants had to merely remember all the numbers they could.
3. The numbers digits correctly responded.
EXP3
Procedure?
Conclusion for each EXP?
EXP1 - showed the content of the rejected message is blocked, confirming Cherry’s Results.
EXP2 - Showed that an affective message breaks through the attention barrier.
EXP3 - showed that neutral material does not become important enough to break through the attentional barrier even when expectations were increased by telling some participants they had to recall all digits.