The phrase "a more negative impact" is correct and usable in written English.
It can be used when comparing the effects of different actions or situations, indicating that one has a greater negative effect than another.
Example: "The new policy has had a more negative impact on employee morale than we initially anticipated."
Alternatives: "a greater adverse effect" or "a more detrimental influence".
"There may be an elevation of Nascar's profile now, but long term, it will have a more negative impact," said Marc Falcone, a motorsports analyst at Bear Stearns.
Different people get down about different things, e.g. a dip in the stock market is likely to have a more negative impact, mood-wise, on a wealthy stockholder than it is a working-class 18 year old.
This may indicated CH had a more negative impact on quality of life than migraine.
In other words, is it true that more conservative channels have a more negative impact on the probability of supporting the lenient Senate plan?
"We think the lower production and weaker mix will have a more negative impact on second-quarter results than we had previously believed.
However, Bagchi et al. (this Issue, in press)report that in the Trans-Himalayas, livestock can have a more negative impact on plant species richness compared to wild graziers, especially in plant species-poor ecosystems.
The alternative, Blunkett says, would have been more illegal immigration, which would have had a far more negative impact on pay rates and standards of work.
And a criminal justice system that treats groups of people differently -- and punishes them unequally -- has a much more negative impact than misguided words that we can reject out of hand.
The exceptions to this were the TRIM-Diabetes Daily Life and Compliance domains and the TRIM-Device Bother domain, with type 1 patients having a significantly more negative impact.
A proposed national sales tax, or a value-added tax, would have an even more negative impact on families at the bottom.
Thus, cutting spending has a much bigger, more negative impact on GDP growth than raising taxes.
