The document discusses interobserver agreement (IOA), which measures the degree that two observers report the same results. It notes that learning how to compare results with a second observer is important. Reasons to conduct IOA include determining competence of new observers, detecting unintended changes in how an observer collects data over time, and determining if behavioral definitions are clear.

1. • Now that you have learned how to use a PMC, you will learn how to
compare your results with a second observer

2. • Now that you have learned how to use a PMC, you will learn how to
compare your results with a second observer
• Interobserver agreement (IOA) is the degree to which two observers
report the same thing

3. • Now that you have learned how to use a PMC, you will learn how to
compare your results with a second observer
• Interobserver agreement (IOA) is the degree to which two observers
report the same thing
• Some reasons to conduct IOA are:
• To determine competence of new observers
• Detect observer drift, which is any unintended change in the way an observer
collects data
• Determine if the definitions are clear

4. Get ready to watch a video on how to
calculate IOA!

5. Now that you learned how to calculate IOA, get
ready to calculate some IOA on your own!