Student Seminar Series - December 12, 2006
University of Minnesota
School of Statistics
College of Liberal Arts


Designing Statistically Sound Listening Tests

John Corbett


Tuesday, December 12, 2006
10:00 AM, 300 Ford Hall
Minneapolis, East Bank Campus

Refreshments at 9:30 AM
300 Ford Hall


Abstract


Researchers in many areas of study have developed techniques to address the special problems they face; examples include the ABX and ABC/hr listening 
tests commonly used in applied psychoacoustics.  But experimenters who develop such methods may be better subject-matter experts than statisticians,
and can easily overlook statistical aspects of design and analysis.  People tend to employ whatever procedures their computer software makes it easy to
use---whether appropriate or not---and general-purpose software appears to be intended more for post-experiment analysis than for pre-experiment design. 
Issues of power and sample size are often ignored, and the results from experiments are frequently misinterpreted.
 
We discuss common problems with ABX and similar experiments as they are typically executed, and we present software that can help a user both while 
planning an experiment and when analyzing data from that experiment.