Q1:What is the difference between X and Xc? How do they relateto the brain and the mind. Discuss 2 design implications of X andXc.

Q2:Define Human Information Processing. Provide one example ofhow it effects systems interaction.

Q3:What are the characteristics of working memory? What is thedifference between working memory and short term memory? How doesworking memory relate to mental workload?

Q4:Dr. Jones was recently awarded for her successful CancerTreatment clinic. She is known to be able to accurately detectbreast cancer from mammograms about 80% of the time. Afterreceiving her award, Dr. Jones really wants to increase heraccuracy rate even more, because she wants her clinic to berecognized again next year. According to SDT, if the true rate ofcancer and her patient population remained the same, what is mostlikely to happen to Dr. Jones’ diagnoses:

	a.	She is likely to have an increase in false alarms.
	b.	She is likely to increase Beta.
	c.	She is likely to experience a decrease in false alarms.
	d.	She is likely to decrease Beta.
	e.	All of the above.
	f.	Both A and D. Q5:There is an experiment of 250 trials and the auditory alarmwas given in a noisy environment.  The results of theexperiment are given in the following table.  Determinethe measure of sensitivity (d’ – d prime). Response Signal (Ya) No Signal (Yb) Yes 90 40 No 10 110 Total 100 150 Notes: h = Number of hits / Number of signal trials f  = Number of false alarms / Number of noisetrials d’ = Z(hit rate) – Z(false alarm rate) You will need your Standard Normal Distribution table