Pogeys Time

It is 6, I'm 100% positive. At least for R/S/E anyways. I never did anything above that. Unless they now changed it to 4. o_0;

It was neither 4 nor 6 for generation's 1 and 2

Generation I & II

The EV system was introduced in Generation I, where it was also called stat experience or Stat Exp.

The Pokémon data structure contains two EV bytes for each the five stats (HP, Attack, Defense, Speed and Special), starting at zero when caught and with a maximum EV of 65535 for each stat, however, maximum stats will be reached with only 63002 EVs. When a Pokémon is defeated, its base stats are converted to effort points and then added to the EVs. For example, defeating a Mew grants 100 effort points to each EV. (Defeating 631 Mew, therefore, will give a Pokémon maximum EVs in each stat.)

EVs are factored into the Pokémon's stats when it levels up. Additionally, EVs are calculated into stats when a Pokémon is taken from Bill's PC; this is called the box trick. A Pokémon which reaches level 100 can continue to accrue EVs up to the maximum of 65535 in each stat, and use the box trick to have those EVs factored in.

Vitamins add 2560 to one stat's EV, but cannot raise a stat above 25600. Unlike later games, the Exp. Share did not share EVs.

At level 100, the formula for determining the stat difference between a Pokémon trained in that stat and an untrained Pokémon is:





Generation III

Generation III completely overhauls the effort value structure. Effort points are now separate values from the base stats. Defeated Pokémon give out 1, 2 or 3 effort points to a particular stat, depending on species (see list of Pokémon by effort value yield). However, in battles that do not give any experience (such as in the Battle Tower or if the Pokémon is level 100), Pokémon will not gain any effort points. At level 100, a Pokémon's stats will be one stat point higher in a specific stat for every four effort points gained in that stat.

Oh also, for generation 3+, if a pokemon is not level 100, 4 points will only give a pokemon a boost of:

[EV*(100/level)]/4 So at level 50, 4 points will only be half a point. 8 points will be 1 stat.