week 9 - bias

Question 1

test bias

Answer 1

arises when there is a factor inherent in a test that systematically prevents accurate, impartial measurement

- Bias in the test in regards to a particular group

Question 2

construct bias

Answer 2

bias within the meaning of the test, two groups see the construct differently

eg, two groups of people see the construct of intelligence differently

Question 3

predictive bias

Answer 3

bias in the predictive use of a test

eg, atar being baised towards western children as a predictor for academic success in uni

Question 4

methods of detecting test bias

Answer 4

internal evaluations for construct bias
external evaluations for predictive bias

Question 5

types of internal evaluations

detecting construct bias

Answer 5

Item Discrimination Index
Factor Analysis
Differential Item Functioning
Rank-Order Consistency

Question 6

an item is biased if

Answer 6

1. people belonging to different groups respond in different ways to the item, and
   
   2. if it could be shown that these differing responses were not related to group differences associated with the psychological construct measured by the test

Question 7

item discrimination index

Answer 7

measures if the items correlate with the total score heavily

must use these seperately for both groups
is the item good and will it actually discriminate between the two groups

Question 8

differential item functioning

Answer 8

an assesment of consruct bias which assumes it can measure trait levels directly from test data
in looking at the curve wed hope to see the same function between the two groups

Question 9

rank order consistency

Answer 9

looking at the average rankings of responses to items
ensuring the order matches across groups

eg, item 3 is the highest scored item for men but second highest for woemn

Question 10

rank order consistency

Answer 10

looking at the average rankings of responses to items
ensuring the order matches across groups

eg, item 3 is the highest scored item for men but second highest for woemn

Question 11

external evaluations for test bias

looking at predicitive bais

Answer 11

bivariate regression
* slope bias
* intercept bias
* slope + intercept bias
* outcome score bias

Question 12

2 steps in external evaluations

Answer 12

1. you need to determine whether the test scores predict the dependent variable to start with
   
   2. you then need to determine whether the test scores predict the dependent variable equally well across groups

are they a good measure
are they a good measure across groups

Question 13

outcome score bias

Answer 13

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