Processing Speed > Categorization

Secret Files

Screenshot of HappyNeuron Pro exercise Secret Files

Please note that you can only play the exercise once on this page. See the free trial section below for full access!

Processing Speed > Categorization

Secret Files

In this exercise, the user must categorize falling words into the correct drawer before they hit the ground. Each drawer is devoted to a specific category. However, not every filing category is given. Through trial and error, the user must discover the hidden category.

Brain Areas Engaged 
how secret files engages the brain.

Learn more about this exercise:

This exercise activates a plethora of neural networks! It’s established that our capacity to use language is located in the left hemisphere of the brain, specifically in two areas: Broca’s area (associated with speech production and articulation) and Wernicke’s area (associated with comprehension). Our prefrontal cortex also engages our executive functions. Semantic memory is activated in the hippocampus and other regions of the temporal lobe. In addition, the frontal and parietal cortexes, as well as the diencephalon, also play an important role in this process.

In this exercise, the user must devise strategies that help them remember the categories and what words correspond to each category. We use these skills when we have to organize items in our homes or organize information in our brains (such as a to-do list or a group of names) in a way that makes them accessible to us.

You can modify:

  • The number of files (2, 3, 4, 5, or 6)
  • The type of file (visible or hidden categories)
  • The speed of the word (none, very slow, slow, normal, fast, or very fast)

150 unique exercise configurations and significant data set depth.

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Other categorization exercises:

Seize the Keywords

Verbal memory, comprehension


Verbal memory, reasoning

This Story is Full of Blanks!

Verbal memory, reasoning

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