Improvements to LPI: Why your LPI may have changed

As part of ongoing efforts to improve Lumosity, we’ve updated how we calculate your Lumosity Performance Index (LPI). These changes are designed to give you a more accurate picture of your cognitive strengths and how your training is progressing.

What is LPI?

First, a quick refresher on LPI and how it works. LPI is a standardized score ranging from 0 to 2000, calculated from all your game scores. It’s designed to help you compare your abilities across games from different cognitive areas.

LPI is calculated at three different levels:

Game LPI: This is your LPI for a specific game – it updates each time you play, based on your performance and how that compares to your recent history.

Cognitive Area LPI: This is calculated using a weighted average of your Game LPIs from all the games you’ve played within a specific cognitive category, such as Memory, Speed, or Attention.

Overall LPI: This reflects your performance across all cognitive areas and is based on a weighted average of all your Game LPIs.

Want more technical details? Here's a deeper dive.

What’s changed?

Our latest update adjusts how Game LPIs are weighted when calculating your Cognitive Area and Overall LPIs. We are now giving more weight to games you’ve played a lot of, and less to those you haven’t. Put differently, the more you play a game, the more influence it will have on LPI.

This shift allows us to provide a more accurate picture of your cognitive performance and relative strengths. After all, your first few attempts at something usually don’t capture a reliable representation of your abilities.

What should I expect?

Game scores and Game LPIs won’t be impacted by this particular change, however there are a few situations in which updating to the new Lumosity could cause minor shifts to occur. If you notice a change here and have questions, feel free to ask Customer Support.

Changes to Overall LPI will typically be small. This is because your Overall LPI averages so many game scores together that shifting the weights of a few game scores is unlikely to be noticeable.

Cognitive Area LPIs are where you’re most likely to see a shift, if any. If you notice that your LPI has increased or decreased in a particular area, it’s simply an indication that your previous LPI was being overly influenced by games you haven’t played as much. 

What does this mean about my cognition?

In short, nothing has changed about you. This update simply improves how well your LPI reflects your relative strengths based on how much you’ve trained. Remember: cognition is dynamic. Your scores will naturally evolve as you continue training.