1.) Fill in the missing information.

	Hit Rate		False Alarm Rate         ZHIT  ZFA  d'

	34%		   		21% 	 	 ___  ___  ___

	46%		   		2% 	 	 ___  ___  ___

	88%		   		27% 	 	 ___  ___  ___

	46%		   		___ 	 	 ___  1.6  ___

	___		   		___ 	 	 ___  2.0  1.0


2.) Indicate the likely effect on sensitivity and response bias of each of the
following factors.  For sensitivity use a + to indicate an increase, a - to indicate a decrease.
For response bias use a + and 0 to indicate change and no change respectively.


Factor					      Likely effect on d'  Likely effect on B 

An increase in signal strength.	

A reduction in grade for every false alarm.   

An increase in noise.			   

A hearing loss.			     

An increase in the probability of the signal.		


3.) What primary factor distinguishes modern from classical psychophyical
procedures?