what are the skill modifiers for unlisted monster skills?

[Dracuwulf]

I read the SRD section on skills for monsters (posted below) and it isn't clear to me how to calculate the skill modifier for skills that are not listed in a monster's stat block. Do you assume that unlisted skills are cross-class skills and therefore do 1.5 + hit dice/2 + ability modifier?





SRD skills for monsters:

This line gives the creature’s skills, along with each skill’s modifier (including adjustments for ability scores, armor check penalties, and any bonuses from feats or racial traits). All listed skills are class skills, unless the creature has a character class (noted in the entry). A creature’s type and Intelligence score determine the number of skill points it has.
The Skills section of the creature’s description recaps racial bonuses and other adjustments to skill modifiers for the sake of clarity; these bonuses should not be added to the listed skill modifiers.
An asterisk (*) beside the relevant score and in the Skills section of the descriptive text indicates a conditional adjustment, one that applies only in certain situations.

 

[DanMcS]

I read the SRD section on skills for monsters (posted below) and it isn't clear to me how to calculate the skill modifier for skills that are not listed in a monster's stat block. Do you assume that unlisted skills are cross-class skills and therefore do 1.5 + hit dice/2 + ability modifier?

No, the skills listed are all the skills the monsters have ranks in. For an unlisted skill, their total bonus is equal to the appropriate stat modifier (since they have 0 ranks).

 

[CRGreathouse]

DanMcS is correct that the unlisted skills have 0 ranks. The modifer is the appropriate ability modifier plus any misc. bonuses (like size for Hide, armor check penalty for many skills, and so forth).

 

[Staffan]

Or the -8 modifier the DM can apply to skills that the creature is unsuited for (the example mentioned in the MM is an elephant using the Jump skill, because Elephants stink at jumping).