What does inteligence affects?

[doctor medic]

Does it only affect how many turns the enemy remembers the position of operatives or it effects more.

[kkmic]

According to the Ufopaedia ruleset reference, it affects only that:

intelligence: Intelligence of this unit's AI. The higher the value, the longer this unit remembers player troops.

You also set aggression:

aggression: Aggression of this unit's AI. The higher the value, the more ruthless the unit.