Bias

Question 1

Who did research into Bias in forensic science?

Answer 1

Itiel E. Dror

Question 2

Bias needs to be measured against the complexity of the fingerprint

Answer 2

True

Question 3

What are some strategies to reduce bias?

Answer 3

• limit exposure to unnecessary potentially biasing information
• analyze the unknown fingerprint before seeing the known
• document the analysis
• use Gyro in analysis phase
• consult if necessary
• use gyro in comparison phase
• submit for blind verification

Question 4

Bias is:

Answer 4

• Our brains make us do it automatically
• it can be helpful, also problematic
• we can’t entirely control it but we can take steps to prevent against it.

Question 5

Confirmation bias :

Answer 5

Basically, if you already know, or have expectations about something, or hypothesis you have come up with, you will search for things to confirm what you think you know. — more likely to steer clear of information that may disagree from those prior beliefs. (You want to confirm what you already think you know)

Question 6

Contextual bias:

Answer 6

When other evidence is used to believe that the specific evidence being analyzed is related to said evidence. (Investigator calls and says buddy just confessed to murder, as your looking at print on murder weapon)

Question 7

Experts can still make mistakes, but novices are far more likely to make mistakes.. what is their % of mistakes

Answer 7

55.18

Question 8

There are more false negatives made than false positives. T or F
False negative is the exclusion of a same source
False positive is when an ident is made when given prints from a different source.

Answer 8

True. More false negatives are made

Question 9

Black box study

Answer 9

The black box study measures the accuracy of the examiners conclusions without considering how they reached those conclusions.
No impression was identified in error by more than one examiner, therefore it is likely the verification stage would have caught the mistake.
White box- will want to know what you did to reach those conclusions

Question 10

What is the Neumann statistical model?

Answer 10

?you don’t need a certain number of
Minutiae in a agreement to form
An opinion

Question 11

What was the calculated error rate in the fbi/noblis black box study?

Answer 11

0.1 percent

Question 12

The error rate of 2.4 calculated In the Miami fade black box study was accurate. T or F

Answer 12

F