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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
was observed for
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase 'was observed for' is correct and usable in written English.
It is used when you want to describe an instance of something being monitored or observed for a certain period of time. Example sentence: The behavior of the monkeys was observed for two weeks in order to study their social interactions.
✓ Grammatically correct
Science
News & Media
Academia
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
A minute's silence was observed for Anton.
News & Media
No significant difference was observed for 22L.
Science & Research
Tumor development was observed for 21 d.
Science & Research
No improvement was observed for the methoxy analogues (28 29).
Science & Research
The largest average genetic distance was observed for var.
Science & Research
A similar pattern was observed for KH176 and KH031.
Science & Research
No such effect was observed for cytosolic transcripts.
Science & Research
A similar trend was observed for mitochondrial ROS (Fig. 3b).
Science & Research
No corresponding effect was observed for HVSMC.
Science
The converse was observed for Black mothers.
Science
Stable replication was observed for all constructs.
Science
Expert writing Tips
Best practice
When using "was observed for", clearly specify what was being observed and the duration of the observation to provide context and clarity for the reader.
Common error
Avoid using "was observed for" without explicitly stating what was being observed. For example, instead of "Improvements were observed for 2 weeks", use "Patient improvements were observed for 2 weeks" to avoid ambiguity.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "was observed for" functions as part of a passive verb construction, indicating that someone or something was subjected to observation for a specified duration. Ludwig's examples demonstrate this usage across various contexts.
Frequent in
Science
75%
Academia
15%
News & Media
5%
Less common in
Formal & Business
2%
Encyclopedias
1%
Wiki
1%
Ludwig's WRAP-UP
In summary, the phrase "was observed for" is a grammatically sound and frequently used expression, particularly in scientific and academic writing. According to Ludwig AI, it is used to describe something that has been monitored or watched for a certain period. Its communicative function is to specify the duration of an observation. While generally formal, its meaning can be conveyed through alternatives such as "was monitored during" or "was tracked over", depending on the specific context. When using "was observed for", ensure that the subject being observed is clearly stated to avoid ambiguity.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
was monitored during
This alternative focuses on the monitoring aspect, emphasizing the active tracking of something over time.
was tracked over
This suggests a more specific form of observation, often implying movement or progression being followed.
was noted across
This alternative highlights that the observation spanned a particular range or duration.
was recorded throughout
This emphasizes the act of documenting observations continuously during a period.
was detected across
Focuses on the act of noticing or discovering something within a certain timeframe.
was identified during
Suggests the recognition of something specific within a given period.
was witnessed throughout
Implies a direct observation of an event or phenomenon over a duration.
was followed up for
This focuses on the continuation of monitoring to look for more or evolving information.
was watched over
Suggests someone kept an eye on it or oversaw it.
was kept under observation for
Emphasizes formal observation for a specific duration.
FAQs
How can I use "was observed for" in a sentence?
Use "was observed for" to indicate that something was monitored or tracked over a specific duration. For example, "The patient's progress "was observed for" a week."
What phrases are similar to "was observed for"?
Similar phrases include "was monitored during", "was tracked over", or "was noted across", which all describe observing something over a period.
Is "was observed for" formal or informal?
"Was observed for" is generally considered neutral to formal, suitable for academic, scientific, or professional writing. More informal alternatives might exist depending on the specific context.
What is the difference between "was observed for" and "was observed during"?
"Was observed for" emphasizes the duration of the observation, while "was observed during" focuses on a specific event or timeframe within which the observation occurred. While subtly different, depending on the context, are interchangeable.
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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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested