
@Penn based, @NINDS4Rigor funded initiative. Creating a free, online curriculum to learn and practice scientific rigor. Join us!
Joined October 2022
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"Transparency is a fetish"
In our new segment, #RigorTakes, Dr. Zac Parker discusses scientific transparency with C4R founder Konrad Kording, professor at University of Pennsylvania.
Agree, disagree, or somewhere in between?
What can well designed controls tell us about an experiment?
From guarding against false positives to strengthening confidence in results, thoughtful control design is a pillar of rigorous research.
#ExperimentalDesign
We spent the last few weeks discussing controls. Next up, our Data Sharing Unit!
You can see the full curriculum at c4r.io/units
Careful design and thoughtful reporting are cornerstones of rigorous research.
Careful experimental design incorporates several principles like: selecting appropriate controls, choosing the right randomization method, avoiding bias, and choosing the best sample size for the experiment.
Writing readable code, creating visualizations to tell your data story, and sharing data effectively are all pieces of thoughtful reporting.
C4R has created free online modules for each of these topics for you to teach or learn from.
What other topics are cornerstones of rigorous research?
#ScientificRigor #OpenScience
C4R, the Community for Rigor, creates free, practical learning resources for researchers and educators. We help people put scientific rigor into practice through lessons, activities, and ready-to-use online teaching materials.
Take the course, adapt for your classroom, or incorporate into your next lab meeting. See the full curriculum at c4r.io/units
C4R uses many established frameworks in developing our curriculum. However, for controls, the existing frameworks didn't fully capture the ways researchers address variables.
Karen Word, Senior Curriculum Developer at C4R, gives us an inside look at why this framework was created.
To understand what this framework means and how it fits into your own research check out the full interview on our YouTube channel: buff.ly/7l4QHmN
#ResearchMethods #ScientificRigor
Avoiding these 3 common control issues produces more rigorous research:
1. Insufficient negative controls
Solution: add targeted negative controls
2. Human bias hindering controls
Solution: apply a masking design
3. Uneven variable distribution
Solution: use randomization
What control issues do you most often see?
If you'd like to learn more or adopt these materials for you classroom or lab explore our full curriculum:
c4r.io/units
What would change if your lab or classroom fully adopted C4R's free scientific rigor materials?
We asked researchers this question. They shared hopes of better, more rigorous, and higher quality science. To them, adoption would mean improved collaboration, increase awareness, and promotion of higher quality experimental designs like randomization.
What would change if your lab or classroom adopted C4R's materials?
#ResearchCulture #TeamScience
Controlling for variables is a cornerstone of rigorous research. How do researchers control for them?
The framework we use is has three categories, constrain, distribute, and test.
Constrain
Limiting the range of the variable
Distribute
Distributing the range of the variable as equally as possible across groups
Test
Making a comparison group or adjusting for effect of the variable during analysis
All three are ways to address a variable's potential influence on an experiment.
How are you controlling for variables in your research?
#ExperimentalDesign #ResearchDesign
To learn more explore C4R's free controls unit.
c4r.io/units
Community For Rigor (C4R) retweeted
NEXT WEEK: #Neuromatch #AISentience Scholars Program Seminar: ‘Inductive Biases in Natural Systems.’
📅 Wed 21 Oct
🕑 15:00 UTC
🎤 30-min talk + discussion & Q&A
📍 Remote, open to everyone
➡️ Register here: buff.ly/StELzmT
#NeuroAI #Neuroscience #AIResearch
You're testing Compound X, which you dissolve in DMSO. After treatment, you observe a difference.
What comparison best separates the effect of Compound X and the solvent (DMSO)?
A. Compare to untreated cells
B. Compare with cells treated with the same concentration of DMSO alone
C. Compare different concentrations of Compound X
D. Compare the effect across several independent experimental replicates
What are controls doing in a research design?
C4R Senior Curriculum Developer, Karen Word, breaks down Constrain, Distribute, Test, the framework used in our Controls unit.
Next week we'll share why we developed it.
#ScientificRigor #ResearchMethods
To learn more about Controls explore our Free Controls unit: c4r.io/units
Community For Rigor (C4R) retweeted
The @Comm4Rigor 2026 Conference brought together students, researchers and educators for three days focused on improving the rigor and transparency of scientific research.
“I loved seeing how people reacted to the awesome materials the C4R team was presenting. Science actually is self-correcting,” says Penn Engineering’s Konrad Kording.
bit.ly/4BhAFYm
#C4R26 #ScientificRigor











