1. Tick or place an x to indicate whether each of the following would be more likely to change d' or criterion in the example of a doctor detecting a tumour in an x-ray. f you select d', indicate if it would likely increase or decrease. If you select criterion, indicate if it would make it more liberal or conservative /4

Situation	d'	Criterion	Expected change
Being instructed to only answer 'present' if absolutely certain
The amount of practice a doctor had at examining an x-ray for a tumour - i.e. the doctor has more experience with the task
The doctor forgetting their glasses before looking at the x-ray
The doctor wanting to be really careful not to miss a possible tumour

Provide and explain an example of a situation where it would be beneficial to have a conservative criterion /2 (100 words max)

Provide and explain an example of a situation where it would be beneficial to have a liberal criterion /2 (100 words max)

Part 2: SDT and Multisensory integration

Please report in the table below what your results from the in class experiment showed.

	d'	Criterion
Sound trials	2.82	1.00
No sound trials	2.64	0.92

What are the typical SDT results for this multisensory task? Explain whether or not your results followed this pattern. /5 (150 words max)

What advantage is there in using SDT over both accuracy and reaction time tasks to understand multisensory integration? (150 words max) /5