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Independent and parallel visual processing of ensemble statistics: Evidence from dual tasks
1.
2. Independent and parallel visual processing of ensemble statistics: Evidence from dual tasks
3. An example
4. Greater or smaller than average?
5. Ensemble summary statistics
6. Independence
MEANNUMEROSITY
RANGE
7. Correlational approach
Differentsources of
noise
One source of
noise
No correlation
between errors in reports
of different statistics
Correlation
between errors in reports
of different statistics
8. Parallelism
MEANNUMEROSITY
REPORT
REPORT
VARIANCE
REPORT
MEAN
NUMEROSITY
REPORT
VARIANCE
9. Parallelism test
Single taskObservers should compute
only one statistics
Dual task
Observers should compute
both statistics
10. Parallelism test
No interferenceError in
single task
Error in
dual task
Interference
Error in
single task
Error in
dual task
11. Experiment 1
12. Procedure
13. Design
3 blocksMEAN
NIMEROSITY
BOTH
6 “variables”
14. Data analysis
Error =о