as has been observed

USAGE SUMMARY

The phrase "as has been observed" is correct and usable in written English.
It can be used to refer to something that has been noted or remarked upon previously, often in a formal or academic context. Example: "As has been observed in previous studies, the effects of climate change are becoming increasingly severe."

✓ Grammatically correct

Science

News & Media

Academia

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Parasol cells exhibited substantial pairwise correlations, as has been observed in other species, indicating functional connectivity.

Stanford University

Additionally, we noticed that some of these structures appeared to branch, as has been observed previously for RSV filaments40.

Nature

We also observed a higher contact frequency between telomere-near regions, as has been observed in Arabidopsis25.

Nature

As has been observed by others, testing the satisfiability of random formulas often appears surprisingly easy.

Artificial Intelligence

In all scenarios, the model also simulates that over time, China's famously high savings rate will decline, as has been observed in many developing economies.

Massachusetts Institute of Technology

However, as has been observed previously with similarly successful targeted therapies, acquired resistance to these agents is an emerging problem that limits their clinical benefit.

Harvard University

His brushwork communicates a lyric, sometimes satiric joy and a sunny optimism; as has been observed before, it is more Rococo than Ab Ex.

The New York Times - Arts

Postwar people who fastened onto the story of Anne Frank, as has been observed before, were not in any sense sentimental to do so.

The New Yorker

As has been observed before, New Town Velocity, from The Messenger, is as beautiful and affecting a tune as he's ever written.

The Guardian - Music

Activation of TRH neurons also led to a fast TRHR1-dependent Fos mRNA expression in the pituitary, as has been observed after TRH stimulation in vivo38.

Nature

The zero delay peak is clearly below 50%, as has been observed before for antenna-enhanced emission from monomeric dye molecules and single quantum dots29,31,32.

Nature

Expert writing Tips

Best practice

When using "as has been observed", ensure the observation you are referencing is well-established or supported by credible sources. This strengthens your argument and avoids relying on unsubstantiated claims.

Common error

Avoid overusing "as has been observed" in a single piece of writing. While it's a valid phrase, overuse can make your writing sound repetitive and overly formal. Vary your language with alternatives such as "as previously noted" or "it has been shown".

Linguistic Context

The phrase "as has been observed" functions as an introductory element in a sentence, signaling that the subsequent statement is something already noted or recognized. It often acts as a bridge, connecting new information to existing knowledge. As Ludwig AI suggests, the phrase is correct and usable.

Expression frequency: Very common

Frequent in

Science

70%

Academia

15%

News & Media

15%

Less common in

Ludwig's WRAP-UP

In summary, the phrase "as has been observed" is a grammatically correct and frequently used introductory phrase that signals a statement is based on previous observation. Ludwig AI confirms its validity and wide applicability. It's commonly found in formal writing, particularly in science and academia, where it lends authority to claims. While a valuable phrase, it should be used judiciously to avoid repetition. Alternatives like "as previously noted" or "it has been shown" can add variety to your writing. Remembering these guidelines ensures you use "as has been observed" effectively and appropriately.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

as previously noted

This alternative is more concise and direct, omitting the passive voice.

as was previously observed

This alternative uses the past tense for "observe", maintaining a similar level of formality.

as others have observed

This highlights the role of multiple observers rather than a general acknowledgement.

it has been observed that

This alternative shifts the sentence structure, placing emphasis on "it" and the observation itself.

it's been noted that

This alternative is slightly less formal and uses a contraction.

as has been pointed out

This focuses on the act of pointing something out, implying a specific argument.

as research indicates

This alternative emphasizes empirical evidence and research findings.

studies have shown

This is a more direct and assertive way to refer to research findings.

it is worth mentioning

This alternative highlights the importance of the observation.

it is important to note

This stresses the significance and relevance of the observation.

FAQs

How can I use "as has been observed" in a sentence?

Use "as has been observed" to introduce a statement or fact that has been previously noted or recognized, often in a formal or academic context. For example: "As has been observed in several studies, the effects of the treatment vary significantly".

What can I say instead of "as has been observed"?

You can use alternatives like "as previously noted", "it has been shown", or "it's been noted that", depending on the context.

Is it more appropriate to use "as has been observed" or "as was observed"?

The choice between "as has been observed" and "as was observed" depends on the context. "As has been observed" implies the observation is still relevant or ongoing, while "as was observed" refers to a past observation that may or may not still hold true.

What's the difference between "as has been observed" and "according to"?

"As has been observed" introduces something that has been generally noted or recognized. "According to" specifically attributes the observation to a particular source or individual.