Eval Lifejacket Donning Instructions !!exclusive!!

: Increased number of sub-tasks (too many buckles or confusing straps) significantly reduces donning speed and accuracy. Clarity Gap : Instructions often fail to emphasize the Crotch Strap

: Pull the adjustment straps until the lifejacket fits firmly against the body. It should be tight enough that it does not ride up over the chin or ears when someone pulls up on the shoulders, but loose enough to allow for normal breathing. eval lifejacket donning instructions

Tucking excess straps to prevent snagging during evacuation. Critical Variables in Instruction Design : Increased number of sub-tasks (too many buckles