Test bias

Test bias is defined as the _________ difference in the estimation of score on a given ________ for a given group.

Name the types of bias that exist?

Bias is about ___________.

• Random measurement error

• Group membership

• Validity

• Systematic errors

• Reliability

When do we consider a bias to be present?

When do we consider a bias to be present?

• When the margin of error differs systematically in a construct between groups
• When the margin of error is systematically present for all groups

• When there is the presence of systematic measurement errors

• When groups membership differs

• All of the above

True or false.

Mean difference constitute a bias.

• True

• False

Mean difference can sometimes be confused for bias. What is mean difference and why does it sometimes cause us to think it is bias?

Answer explanation

Mean difference is the difference in mean scores (average score) of one group compare to another. Mean tells us nothing about individuals of a group. Someone people may score higher in a group, but still the average might be low. And some differences exist in both gender and ethnic groups that aren't linked to bias.

Which type of test bias is defined by items being more difficult for a certain group?

• Content bias

• Construct bias

• Predictive validity bias

• Reliability bias

Which type of test bias is the following example describing?

Two groups with same IQ, one group find the items more difficult than it is bias.

• Content bias

• Construct bias

• Predictive validity bias

• Reliability bias

What is the difference between content bias and content validity?

Answer explanation

Content bias is about difficulty of the item not about the experts assessment of a tests items as related to the constructs and components that are deemed important to address.