The phrase "have a positive affect" is not correct in this context; it should be "have a positive effect." You can use it when discussing the beneficial impact of something on a person, situation, or outcome.
Example: "Regular exercise can have a positive effect on mental health."
Alternatives: "have a beneficial impact" or "produce a favorable outcome."
The advantages of the design of a semi-rigid optical stylet should have a positive affect on intubation in floor-level positioning, and this may have some effect on the comparison to DL in this particular study.
A recent report suggests that regular bedtimes have a positive affect on how children behave, while erratic sleep leads to deterioration of behavior, health and learning.
"All in all, I believe focusing on corporate markets is good for BlackBerry's business from a financial and branding standpoint, and it will have a positive affect on our business as app creators.
Any improvements, even marginal, will have a positive affect on market performance.
Further, improved aerodynamic design of trucks could have a positive affect on fuel consumption.
Bringing someone into the organization who has paid their debt and knows the consequences of poor decisions will have a positive affect the organization (shameless self plug).
What five things can I smell now? "Saying these out loud has a positive affect on reducing or eliminating anxiety.
The new facility on Jeffrey Humble – the vision of MYA's operations manager Liam Corcoran – has already had a positive affect on grassroots football in the area.
In America, do you think religion, most notably Christianity, has had a positive affect on our politics and policy?Mr Linker: As with my answer to the broader question, my answer here falls right down the middle.
I recently wrote an article about giving and how it has a positive affect on our lives for my own blog, you can check it out here.
