Vocabulary · Free lesson
Affect or effect? Influence and result
You are describing what background noise does to your concentration. The spelling changes when you change the sentence structure.
Professor Scott MendozaThe short answer
For the common influence meaning, affect is a verb: “Noise affects my concentration.” Effect is a noun for the result: “Noise has an effect on my concentration.” Use affect + object, but an effect on + object.
Check the word’s job, then the words around it.
Affect describes influencing something; it takes the thing influenced directly. Effect names the influence or result, so it can follow a word such as an or a descriptive adjective. “A small effect on…” is a noun phrase. In “The noise affects me,” affects is the verb agreeing with the singular noise.
Compare the examples
Noise affects my concentration.
Noise has an effect on my concentration.
The new lighting had a positive effect on the room.
Affect is not always negative: something can affect you in a good or bad way. Effect can describe either kind of result too.
Build the meaning step by step
Need a verb meaning influence?
The change may affect us.
Need a noun for the result?
The change may have an effect on us.
Try it now
Choose the word and pattern
Read all answers and explanations
Complete: “The delay may ___ our plans.”
affectMay affect our plans needs a base-form verb followed directly by its object.
Complete: “The change had a small ___ on attendance.”
effectA small effect is a noun phrase naming the result.
Choose the common verb pattern meaning influence.
The noise affects me.Affects takes me directly. With the noun, write has an effect on me.
Put it into practice
Repair a short update
Keep both meanings: the schedule influences people, and the result is positive.
The new schedule has a positive affect on us. It effects our daily routine.
See a model answer
The new schedule has a positive effect on us. It affects our daily routine.
Read both the word’s role and its surrounding structure before choosing.
A little more clarity
Common questions
A few useful details before you move on.
Is effect always a noun?
No. A formal verb use means bring about, as in effect a change. That is different from affect a plan, which means influence it. The common noun/verb contrast is a starting point, not an absolute rule.
The group hopes to effect a lasting change.
Where does on belong?
In the common patterns here, use affect the team but an effect on the team. Do not copy on into the verb pattern.
It affects the team. / It has an effect on the team.
Take it into your day
Affect something; have an effect on something.
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