21.   Being protected from firing also affects worker performance.

22.   Bill Johnston, a psychology professor at the University of Utah who has studied how cell phones affect driving performance, agreed.

23.   But it is dangerous when taken in dosages large enough to affect performance in a marathon run or a bicycle race.

24.   But tests show that the grooves do not affect performance.

25.   But Vaughn reiterated Friday that he would not allow his contract status to affect his performance.

26.   Charges are usually higher, though, which can affect long-term performance.

27.   Commanding and affecting performance from Nicholas Cage as the would-be suicide and Elisabeth Shue as the tolerant prostitute who props him up.

28.   Commanding and affecting performances from Nicolas Cage as the would-be suicide and Elisabeth Shue as the tolerant prostitute who props him up.

29.   During the hearings, Ashcroft said his views on issues like gun control would not affect his performance.

30.   Erstad also was going through a divorce that affected his performance.