Assignment 1_ Signal Detection Theory (1)(3)(1)(1)(1)

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The University of Queensland *

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Course

2020

Subject

Electrical Engineering

Date

Apr 3, 2024

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docx

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3

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Part 1: Signal Detection Theory 1. Label each quadrant according to SDT /2 Signal Present Signal Absent Responded Present Responded Absent 2. Tick 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. Íf 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 A doctor having more practice at examining x-rays The doctor forgetting their glasses before looking at the x-ray The doctor wanting to be really careful not to miss a possible tumour 3. Provide and explain an example of a situation where it would be beneficial to have a conservative criterion /2 (100 words max) 4. Provide and explain an example of a situation where it would be beneficial to have a liberal criterion /2 (100 words max)
5. Identify which of the following labels indicates d’ and criterion (answer A,B,C,D or E) /2 d’ = Criterion =
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 No sound trials 1. What are the typical SDT results for this multisensory task? Explain whether or not your results followed this pattern. /5 (150 words max) 2. What advantage is there in using SDT over both accuracy and reaction time tasks to understand multisensory integration? (150 words max) /5
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