Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
a primary effect
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a primary effect" is correct and usable in written English.
It can be used when discussing the main or most significant outcome of a particular action, event, or phenomenon. Example: "The primary effect of the new policy was an increase in employee productivity."
✓ Grammatically correct
Science
Encyclopedias
Alternative expressions(3)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
That is to say that, to withstand the strictures of the Establishment Clause, there must be a secular legislative purpose and a primary effect that neither advances nor inhibits religion.
Encyclopedias
On the other hand, introduction of HSR has a primary effect on one-hour connections and secondary effects on 90-min commutes [69].
It strongly affected the hardness and the porosity which had a primary effect on the thickness/cycle and the DE values.
Science
Character development thus involves expanding the knowledge of our innate individuality, and a primary effect of this knowledge and self-realization is greater peace of mind (WWR, Section 55).
Science
Application of CTS in soil has a primary effect on the bacterial communities that, negatively, alter the bacterial diversity and community similarity, while that, positively, it permits to select specific bacterial groups able to resist and biodegrade contaminants.
Science
It has been found that the interaction between the two homopolymers prevents PVDF from crystallization in the blend, the net result of which has a primary effect on the surface properties of the films.
Science
Regarding functional aspects, elevation, as a broad-scale environmental gradient, showed a greater influence on dominant trait values, whereas at finer scales, grazing management had a primary effect on both dominant trait values and diversity measures.
Landscapes change constantly from natural and anthropogenic drivers, and land use and land cover changes by humans have been identified as a primary effect of humans on natural systems.
Science
The role of VP in memory processing and the effects of VP on learning and memory tasks to a primary effect on the individual's arousal level were emphasized in their research studies.
Science
The data suggest that augmented hepatic insulin action may be a primary effect of GSL inhibition in the DIO mouse.
Science
Therefore, a primary effect of removing γCOP functions from the embryo might be the inability to secrete proteins.
Science
Expert writing Tips
Best practice
When using the phrase "a primary effect", ensure that you clearly distinguish it from any secondary or subsequent effects. This helps in providing a more precise and understandable analysis of cause and effect relationships.
Common error
Avoid attributing all observed changes solely to "a primary effect" without considering other contributing factors. Ensure you've thoroughly investigated potential secondary effects and interactions that might influence the overall outcome.
Source & Trust
81%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a primary effect" functions as a noun phrase, typically serving as the subject or object of a sentence. It identifies the principal or most immediate consequence of an action or event, as supported by Ludwig's examples.
Frequent in
Science
84%
Encyclopedias
2%
News & Media
1%
Less common in
Formal & Business
1%
Reference
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "a primary effect" is a grammatically sound and frequently used phrase to describe the main or most immediate outcome of an action or event. Ludwig AI confirms its correctness and provides numerous examples, predominantly from scientific and encyclopedic sources. When employing this phrase, it's crucial to distinguish it from secondary effects and avoid redundancy by using either "primary" or "main", but not both. Alternatives such as "a main effect" or "a key effect" can be used for variety. Understanding its function and purpose will enhance clarity and precision in your writing, especially in formal and scientific contexts.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
a main effect
Replaces "primary" with "main", emphasizing the principal result.
a key effect
Substitutes "primary" with "key", highlighting the crucial or essential impact.
a fundamental effect
Replaces "primary" with "fundamental", emphasizing the foundational nature of the effect.
a major effect
Substitutes "primary" with "major", indicating a significant outcome.
a predominant effect
Replaces "primary" with "predominant", highlighting the most noticeable or common effect.
a principal effect
Uses "principal" instead of "primary", denoting the chief or foremost result.
a core effect
Replaces "primary" with "core", emphasizing the central and essential impact.
a basic effect
Substitutes "primary" with "basic", indicating a foundational or elementary outcome.
an initial effect
Replaces "primary" with "initial", focusing on the effect that occurs first.
an immediate effect
Substitutes "primary" with "immediate", highlighting the promptness of the outcome.
FAQs
How can I use "a primary effect" in a sentence?
You can use "a primary effect" to describe the main or most significant outcome of an action or event. For example, "The primary effect of the new policy was an increase in employee productivity."
What are some alternatives to saying "a primary effect"?
You can use alternatives like "a main effect", "a key effect", or "a fundamental effect" depending on the context.
What is the difference between "a primary effect" and a secondary effect?
"A primary effect" is the initial or most direct result of an action or cause, while a secondary effect is a subsequent or indirect result that stems from the primary effect. It's crucial to distinguish between the two for accurate analysis.
Is it redundant to say "the main primary effect"?
Yes, using both "main" and "primary" is generally redundant. It's best to choose either "a primary effect" or "a main effect" to avoid unnecessary repetition.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
81%
Authority and reliability
4.6/5
Expert rating
Real-world application tested