IQ

IQ is a skill system in Pokémon Mystery Dungeon: Red Rescue Team and Blue Rescue Team, Explorers of Time and Explorers of Darkness and Pokémon Mystery Dungeon: Explorers of Sky. By gaining IQ points, various benefits are received. It is increased by feeding Gummis to individual Pokémon. Also, once in a while you may experience a stat raise of Attack, Defense, Special Attack, or Special Defense by 1 to 3.

As a Pokémon's IQ increases, they learn a number of skills to help traveling in dungeons. IQ also takes on some of the effects that happiness has in the main series meaning that certain Pokémon require an increased IQ to evolve.

While this game mechanic is named after the intelligence quotient, there is a difference between the two. When speaking to Alakazam or Noctowl in dungeons, they will mention their high IQ, regardless of how many points they have in this mechanic.