If a monster is subject to some inhibiting psychological effect, such as hatred or stupidity, then the appropriate tests must be made. However, all Leadership tests can be taken using the rider's Leadership characteristic. This represents the rider's ability to control the beast and impose his own will over the creature's natural instincts.

If the monster is affected by frenzy, stupidity, hatred, etc, it will carry its rider along with it, but the rider himself is not affected by the psychological reaction. So, if a monster goes stupid and is unable to fight, this does not affect the rider who continues to fight on as normal.

The same rule applies to monsters pulling chariots: any Psychology tests are taken using the best Leadership value of the chariot's crew.