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
crf-
Grammar usage guide and real-world examplesUSAGE SUMMARY
The part of the phrase "crf-" is not correct or usable in written English as it appears to be an incomplete or unclear abbreviation.
It may be used in specific contexts where "crf" is defined, such as in technical or specialized fields, but without context, it is not clear. Example: "The crf- protocol must be followed for accurate results."
⚠ May contain grammatical issues
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
12 human-written examples
Dr. Vale discovered CRF in 1981 and the next year found a second hormone, called the growth hormone releasing factor, or GRF, which had also eluded the older scientists.
News & Media
In theory then, the idea is that I could give a CRF to anyone vaguely competent in psychological research methods, and they would be able to run my experiment as I originally intended.
News & Media
One way in which we might improve and standardise our methods is by taking a leaf out of clinical trial research and using a sort of case report form (CRF).
News & Media
Essentially, the point of the psychological CRF is to act as a detailed lab notebook, and document everything that happens during the course of an experiment.
News & Media
With permission from Professor Marcus Munafò at the University of Bristol, I've created a generic CRF based on examples from his research group, which you can have a look at here.
News & Media
Dr. Vale's first target was the master hormone known as CRF, or corticotrophin releasing factor, which integrates and controls the body's response to stress.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
8 human-written examples
A discriminative approach that overcomes this difficulty is the use of conditional random fields (CRFs).
Science
CRFs could also play a useful role in the pre-registration process for experiments.
News & Media
It's worth noting that there is no recognized standard for CRFs in psychological experiments at the moment – this is but one example.
News & Media
Using CRFs in this way isn't a panacea, and shouldn't be treated as a replacement for vigilance in the way we conduct experiments.
News & Media
If you are a research psychologist, it would be useful to gather your opinions on the use of CRFs in psychological experiments.
News & Media
Expert writing Tips
Best practice
Avoid using the abbreviated form "crf-" without providing the full term or context. If referring to corticotrophin-releasing factor, use "CRF" or the full name. If referring to case report forms, specify what type of CRF you're referring to.
Common error
Confusing "crf-" with established abbreviations like "CRF" (corticotrophin-releasing factor) or assuming it's a universally recognized term can lead to miscommunication. Always clarify the intended meaning or use the complete term to ensure clarity.
Source & Trust
60%
Authority and reliability
1/5
Expert rating
Real-world application tested
Linguistic Context
The input "crf-" appears to be an incomplete or unclear abbreviation. Based on Ludwig's analysis, it's not grammatically correct or usable in written English without additional context. It might be intended as an abbreviation for "CRF", but the trailing hyphen renders it incomplete and ambiguous.
Frequent in
Science
0%
News & Media
0%
Formal & Business
0%
Less common in
Science
0%
News & Media
0%
Formal & Business
0%
Ludwig's WRAP-UP
In summary, the phrase "crf-" is not a recognized or grammatically correct term in standard English. Ludwig AI analysis suggests that it's likely an incomplete or unclear abbreviation. If you're referring to Corticotrophin-Releasing Factor, use "CRF" or the full name. Without context, it lacks a clear communicative purpose and can lead to misinterpretation. Clarity and context are crucial when using abbreviations in writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
Corticotrophin-releasing factor
Full name of the hormone, providing clarity.
Case report form
Alternative meaning in research context, specifying what type of form.
Conditional random fields
Full name of the algorithm, specifying its meaning.
Stress response hormone
Describing the function of CRF.
Clinical trial documentation
Expanded term specifying the use case.
Sequence labeling algorithms
Describing the function of conditional random fields.
Hormonal stress regulator
More descriptive synonym for CRF.
Psychological experiment protocol
Describes the context of Case Report Forms.
Detailed experimental procedure
Breaking down the meaning of Case Report Forms.
Data collection methodology
Generalizing the function of Case Report Forms.
FAQs
What does CRF stand for?
CRF can stand for multiple things, including Corticotrophin-Releasing Factor, a hormone involved in the stress response, or Case Report Form, used in clinical research. The specific meaning depends on the context.
How should I use CRF in scientific writing?
When using CRF in scientific writing, always define it the first time it's used (e.g., Corticotrophin-Releasing Factor (CRF)). This ensures clarity and avoids ambiguity.
Are there alternatives to using Case Report Forms in research?
While Case Report Forms (CRFs) are standard for structured data collection, alternatives include electronic data capture (EDC) systems or other standardized data collection tools that ensure consistency and completeness.
What is the role of Corticotrophin-Releasing Factor (CRF) in the body?
Corticotrophin-Releasing Factor (CRF) is a hormone that plays a central role in the body's stress response. It stimulates the release of adrenocorticotropic hormone (ACTH) from the pituitary gland, which in turn stimulates the release of cortisol from the adrenal glands.
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
60%
Authority and reliability
1/5
Expert rating
Real-world application tested