My student at is running a personalty study and needs a huge number of participants! Please consider taking 5-10mins to complete this survey! https://mmu.eu.qualtrics.com/jfe/form/SV_eJ5lqgociAiTWB0 #psychology #personality #samplesize #data

"Sample size samba" (Schulz and Grimes 2005) is a glorious way of describing whatever the hell is going on with some papers.

Full text: https://www.unav.edu/documents/10162/36020227/Samplesizecalculations.pdf

#Sampling #Samba #SampleSize

AMP has just published!
"A Short Guide on How to Carry Out Validation of Scales Measuring Health Outcomes"

Perspective Article by Edgar Martins Mesquita from Universidade do Porto, in Porto.

Full paper available here:
https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/20041

#reproducibilityofresults #samplesize #surveys #questionnaires #validationstudies

My latest post - OC Curve and Reliability/Confidence Sample Sizes:

#SampleSize #Statistics #Reliability #Confidence #Minitab

I have had a lot of feedback on one of my earlier posts on OC curves and how one can use it to generate a reliability/confidence statement based on sample size, n and rejects, c. This post is mostly geared towards giving an overview of using OC curves to generate reliability/confidence values and using Minitab to do the same.

https://harishsnotebook.wordpress.com/2023/03/25/oc-curve-and-reliability-confidence-sample-sizes/

Can anyone point me to a paper/post explaining why you should not base your sample size calculation on the effect found in the literature or a pre-test? Pretty sure I read it once but cannot find it anymore. Maybe I saw it in @lakens's course? #poweranalysis #samplesize

Find all the reviews from our Microbial IMPACTT review series with Mucosal Immunology in one convenient place: https://www.mucosalimmunology.org/microbial-impactt

#review #immunology #microbiome #mucosalimmunology #germfree #IBD #wildmicrobiome #microbiota #metabolomics #power #samplesize #metabolites

This looks fascinating:

“We reviewed empirically-based studies of sample sizes for saturation in qualitative research.

We confirmed qualitative studies can reach saturation at relatively small sample sizes.

Results show 9–17 interviews or 4–8 focus group discussions reached saturation.”

#qualitative #research #saturation #samplesize #academicchatter

https://www.sciencedirect.com/science/article/pii/S0277953621008558

Referenced link: https://hothardware.com/news/huge-capacity-hdds-shine-storage-reliability-report-caveat
Originally posted by Backblaze / @backblaze@twitter.com: https://twitter.com/HotHardware/status/1620443298778284032#m

RT by @backblaze: The folks at @backblaze deliver incredible insight into #HDD reliability metrics with a #samplesize now spanning more than 230,000 #disks.

https://hothardware.com/news/huge-capacity-hdds-shine-storage-reliability-report-caveat

Should be a required reading before any research ... Do read ! On the 12th Day of Christmas, a Statistician Sent to Me . . . | The BMJ

https://www.bmj.com/content/379/bmj-2022-072883
#Research #statistics #datascience #clinicaltrials #ResearchMethodology #Bias #Assumptions #metaanalysis #Prediction #analysis #SampleSize #reproducibility

(Interested in) Working with the random-intercept Cross-lagged Panel Model and unsure what sample size to use?

Jeroen Mulder fixed it for you:
Mulder, J.D., (2022). Power analysis for the random intercept cross-lagged panel model using the powRICLPM R-package. Structural Equation Modeling: A Multidisciplinary Journal.

https://jeroendmulder.github.io/powRICLPM/

Other questions about the RI-CLPM?
https://jeroendmulder.github.io/RI-CLPM/index.html

#SEM #longitudinal #PanelData #RICLPM #CLPM #Dynamics #power #SampleSize

@teixi @neuroscience @sTeamTraen I don't object to the BFI-2 being used in neuroscience, or psychology more generally. There's a good body of validation research on it. But a good BFI-2 study typically has several hundred--possibly 1000--participants.

I'm trying to get into neuroscience now, but it's hard to cut through the brain picture hype to know what you should believe.

#Neuroscience #SampleSize #ScienceCriticism #EEG #fMRI

@neuroscience What concerns me is this:

fMRI: N = 66
EEG: N = 225

It just feels too small to do anything sophisticated and/or reliable.

I just reviewed a publication in the last year or so that found you need *way more* brains than that for valid trait inferences.

Here's what I wrote about it:
https://www.psychologytoday.com/us/blog/how-do-you-know/202203/when-can-we-trust-brains-predict-abilities

Here's the original study:
https://www.nature.com/articles/s41586-022-04492-9#Sec6

#Neuroscience #EEG #fMRI #Research #SampleSize

Trying to find a paper from a couple of years ago about studies being improved (not sure that was the word) when the sample size (and Power) is considered and justified in the ethics application. Ring any bells for anyone? I am currently drawing a blank but sure I read it.

#ethics #psychology #SampleSize

Trying to find a paper from a couple of years ago about studies being improved (not sure that was the word) when the sample size (and Power) is considered in the ethics application. Ring any bells for anyone? I am currently drawing a blank but sure I read it.

#ethics #psychology #SampleSize

Please help me out and vote on some drawings at https://andri.io/quickdrawbattle/.

I want to make an app that judges your doodling skills. :D

#help #helpwanted #crowdsourcing #data #doodle #drawing #samplesize #survey