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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
affects which
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "affects which" is not standard in written English and may lead to confusion.
It can be used in contexts where you are specifying the impact on a particular subject or object, but it is often better to rephrase for clarity. Example: "The new policy affects which departments will receive funding."
News & Media
Encyclopedias
Science
Alternative expressions(4)
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
41 human-written examples
This affects which creative formats are most effectiveStart signing off work on your mobile phone.
News & Media
This affects which decay modes should be included, and so gives different results.
News & Media
The availability of light affects which organisms can inhabit a certain area of a marine ecosystem.
Encyclopedias
What you eat affects which diseases you may develop, regardless of whether you're thin or fat.
News & Media
Now the cable systems that the court's ruling affects, which in all reach about 18 million homes, are deciding how to respond.
News & Media
Virulent strains tend to have haemagglutinins that can bind to a variety of cell types.The composition of the haemagglutinin also affects which species can be infected.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
19 human-written examples
"She was really, really affected, which I think is normal when you are Serena.
News & Media
cycle are found to be affected, which means none are suitable for implantation.
News & Media
Classifications matter, the report says, because among other things, they can affect which businesses receive tax relief.
News & Media
Many voters have said their negative opinion of the federal government will affect which way they will vote on Saturday.
News & Media
If picking 10 favourites was tough, imagine making decisions that affect which and how many species survive.
News & Media
Expert writing Tips
Best practice
When using "affects which", ensure the sentence clearly specifies both the influencing factor and the options being affected. For example, instead of "The decision affects which", clarify as "The funding decision affects which projects receive support."
Common error
Avoid using "affects which" when the subject influencing the choice is unclear or ambiguous. Instead, rephrase to explicitly state the influencing factor. For example, revise "This affects which method is used" to "The available resources affects which method is used".
Source & Trust
82%
Authority and reliability
3.9/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "affects which" functions as a connector, indicating a causal relationship where the initial element influences or determines a subsequent selection or choice. Ludwig AI notes that it is acceptable but may benefit from rephrasing for clarity in certain contexts.
Frequent in
News & Media
31%
Science
27%
Encyclopedias
7%
Less common in
Wiki
4%
Formal & Business
0%
Academia
0%
Ludwig's WRAP-UP
In summary, "affects which" is a commonly used phrase to denote a causal relationship where one factor influences a subsequent choice. Ludwig AI indicates that while acceptable, rephrasing might improve clarity in some instances. As shown by Ludwig, it's prevalent in news, science, and encyclopedic sources, implying a broad applicability across formal and informal registers. When using "affects which", ensure clarity by specifying both the influencing factor and the options being affected, and avoid vagueness to enhance communication effectiveness. Consider alternatives like "influences which" or "determines which" for nuanced expressions.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
influences which
Replaces "affects" with a synonym emphasizing impact or sway.
impacts which
Substitutes "affects" with a stronger term suggesting a significant effect.
determines which
Indicates a decisive influence, where the factor sets a specific outcome.
governs which
Suggests a rule-based influence, where the factor controls the selection.
dictates which
Emphasizes an authoritative influence, where the factor strictly directs the outcome.
shapes which
Highlights the formative effect of the factor on the subsequent selection.
conditions which
Suggests a limiting influence, setting the circumstances for the outcome.
bears on which
Implies relevance or consequence concerning a certain choice.
has a bearing on which
More explicitly states the relevance or consequence on a certain choice.
has an effect on which
A more verbose replacement using "effect" as a noun.
FAQs
How can I use "affects which" in a sentence?
Use "affects which" to show how something influences a selection or choice. For example, "The amount of sunlight "affects which" plants can grow in the garden."
What can I say instead of "affects which"?
You can use alternatives like "influences which", "determines which", or "impacts which" depending on the specific nuance you want to convey. For instance, "The budget "determines which" projects are funded."
Is it better to use "affects which" or "influences which"?
Both "affects which" and "influences which" are acceptable, but "influences which" may sound more formal. "Affects" generally implies a direct impact, while "influences" suggests a more subtle effect.
What's the difference between "affects which" and "is affected by which"?
"Affects which" indicates an active influence, whereas "is affected by which" indicates a passive reception of influence. For example, "The weather affects which crops grow" versus "Crop yield is affected by which weather patterns are present".
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
82%
Authority and reliability
3.9/5
Expert rating
Real-world application tested