Lecture 4 -Learning Objectives (DN)

Question 1

What are some important principles of item analysis?

Answer 1

learning objective - 1

Question 2

What are some of the tools used during item analysis?

Answer 2

learning objective - 1

• Item-difficulty index
• Item-discrimination index
• Item-validity index
• Item-reliability index

Question 3

contrast the item-difficulty and item- discrimination indices

Answer 3

part of learning objective 1

• Item Difficulty Index - the proportion of testtakers answering the item correctly
• Item Discrimination Index - the degree an item correctly differentiates the behaviour it was designed to measure

Question 4

What is the difference between criterion-referenced tests & norm-referenced tests?

Answer 4

learning objective no.2

• both tests may have items which high scorers get correct & low scorers get incorrect
• Norm-referenced tests - this makes it a good item
• however on a Criterion-referenced test, this is not what makes it a good item
• **Criterion-referenced tests - **
  
  • a good item checks whether a certain criteria is met
  • e.g., when knowledge or mastery required e.g., doctor of medicine

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Question 5

Interpretation of test scores - particularly standardised test scores

Answer 5

learning objective 3