Speech (Fallout)

Speech is a skill in Fallout and Fallout 2. It determines the chance to succeed in a Speech challenge.

Initial level
Fallout:
 * $$\text{Initial level}=25+(2\times\text{Charisma})$$

Fallout 2:
 * $$\text{Initial level}=5\times\text{Charisma}$$

Speech checks are done with a skill roll or checking against a threshold (only the former are generally called "Speech checks"). Rolls are virtually ubiquitous in Fallout while the latter are more prevalent in Fallout 2.