What are IVs and EVs in Pokémon?

While pure levels from adventuring together are enough to clear most story challenges in any mainline Pokémon game, the true mark of a well-reared Pokémon prepped for competitive play is an optimized spread of Internal Values (IV) and Effort Values (EV). 

IVs and EVs are hidden values that constitute the bulk of stat diversity between individual Pokémon of the same species. Understanding how these values work and how to optimize them is critical to training for high-level competitive play—here’s a breakdown of how IVs and EVs work in Pokémon Scarlet and Violet. 

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