You can affect a radius with a single use of a psionic skill.

Prerequisites: Psionic Ability, Wis 13+.

Benefit: When using a psionic skill that normally affects a single target, you can have it affect a burst with a radius of up to twice your skill rank in feet. The skill affects all targets in the area of the burst normally. You must still meet any requirements for range, including mental contact, if the skill requires it. Make a single skill check and compare the results to each target in the area. Targets save individually against the skill’s effects.

Strain: The widened skill costs double the normal amount of strain (or 1 if the normal strain is 0).