How to slow things down?

Yeah, so I have this particle effect which makes leaves swirl around in a tornado-ish manner, but it’s way too fast. I want to cut the speed of the thing into one quarter. Do I have to reset all the forcefield values to one quarter, or is there a command in Blender to slow the animations down?

Thanks in advance!

Because the animation is not driven by keyframes, I believe you have to change either the emitter values or the force field values.

or you can change the time in the particle´s ipo window.

there is also a parameter called tweak , it slows or speeds up your particles