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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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have an effects

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "have an effects" is not correct in English.
The correct form should be "have an effect." You can use it when discussing the influence or impact something has on a situation or outcome. Example: "The new policy will have an effect on employee productivity."

⚠ May contain grammatical issues

Science

Wiki

Human-verified examples from authoritative sources

Exact Expressions

3 human-written examples

It is therefore expected that changes, however subtle, in the regulation of the genes after exposure to LDR would have an effects on the ultimate physiological or systemic outcome.

If your amp does not have an effects loop, your set up will be much easier.

After this check to see if your amp has an effects loop: If your amp does have an effects loop, plug a cord into the effects loop send and attach the other side into the input on the far right pedal.

Human-verified similar examples from authoritative sources

Similar Expressions

57 human-written examples

But they have an effect".

News & Media

Independent

It does have an effect on us".

News & Media

The New Yorker

Stronger balance sheets also have an effect.

News & Media

The New York Times

"We certainly have an effect on that.

They are beginning to have an effect.

News & Media

The Economist

"It does have an effect," Mead thinks.

News & Media

Independent

That can have an effect.

This has to have an effect.

Show more...

Expert writing Tips

Best practice

Always use the singular form "effect" after "have an" to ensure grammatical correctness. For instance, say "The policy will have an effect on productivity", not "have an effects".

Common error

The word "effects" is typically used as a plural noun or as a verb meaning to bring about. Avoid using "effects" after "have an"; instead, use the singular noun "effect". Remember, you can use "affect" (verb) to describe influencing something, but not after "have an".

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

76%

Authority and reliability

2.1/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "have an effects" attempts to express causation or influence. It incorrectly uses the plural form of "effect" after the indefinite article "an". The correct form is "have an effect". According to Ludwig AI, the phrase is grammatically incorrect.

Expression frequency: Rare

Frequent in

Science

33%

Wiki

67%

News & Media

0%

Less common in

Formal & Business

0%

Encyclopedias

0%

Reference

0%

Ludwig's WRAP-UP

In summary, the phrase "have an effects" is grammatically incorrect. The correct form is "have an effect". Ludwig AI confirms this, and usage examples demonstrate the proper construction. Alternatives such as "have an impact" or "produce results" can also be used. While the existing examples come from Science and Wiki sources, ensuring grammatical correctness will improve clarity and credibility in any context.

FAQs

What is the correct form, "have an effect" or "have an effects"?

The correct form is "have an effect". The phrase requires the singular noun "effect" rather than the plural "effects".

When should I use "affect" versus "effect"?

"Affect" is typically used as a verb meaning to influence something (e.g., "The weather will affect our plans"). "Effect" is typically used as a noun meaning a result or consequence (e.g., "The medication had a positive effect"). Consider using "have an impact" as an alternative.

What are some alternatives to saying "have an effect"?

Alternatives include "have an impact", "make a difference", or "produce results", depending on the specific context.

Is "have effects" ever correct?

Yes, but not with the indefinite article "an". "Have effects" can be correct when "effects" refers to multiple results or consequences in a general sense (e.g., "The treatment can have side effects"). In the case of a single general result, "have an effect" is the correct expression.

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Source & Trust

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Authority and reliability

2.1/5

Expert rating

Real-world application tested

Most frequent sentences: