News
Welcome to the News community!
Rules:
1. Be civil
Attack the argument, not the person. No racism/sexism/bigotry. Good faith argumentation only. This includes accusing another user of being a bot or paid actor. Trolling is uncivil and is grounds for removal and/or a community ban. Do not respond to rule-breaking content; report it and move on.
2. All posts should contain a source (url) that is as reliable and unbiased as possible and must only contain one link.
Obvious right or left wing sources will be removed at the mods discretion. We have an actively updated blocklist, which you can see here: https://lemmy.world/post/2246130 if you feel like any website is missing, contact the mods. Supporting links can be added in comments or posted seperately but not to the post body.
3. No bots, spam or self-promotion.
Only approved bots, which follow the guidelines for bots set by the instance, are allowed.
4. Post titles should be the same as the article used as source.
Posts which titles don’t match the source won’t be removed, but the autoMod will notify you, and if your title misrepresents the original article, the post will be deleted. If the site changed their headline, the bot might still contact you, just ignore it, we won’t delete your post.
5. Only recent news is allowed.
Posts must be news from the most recent 30 days.
6. All posts must be news articles.
No opinion pieces, Listicles, editorials or celebrity gossip is allowed. All posts will be judged on a case-by-case basis.
7. No duplicate posts.
If a source you used was already posted by someone else, the autoMod will leave a message. Please remove your post if the autoMod is correct. If the post that matches your post is very old, we refer you to rule 5.
8. Misinformation is prohibited.
Misinformation / propaganda is strictly prohibited. Any comment or post containing or linking to misinformation will be removed. If you feel that your post has been removed in error, credible sources must be provided.
9. No link shorteners.
The auto mod will contact you if a link shortener is detected, please delete your post if they are right.
10. Don't copy entire article in your post body
For copyright reasons, you are not allowed to copy an entire article into your post body. This is an instance wide rule, that is strictly enforced in this community.
view the rest of the comments
If male tears were the only control, then they run the risk of not finding any result. If you have 3 groups, you need a substantially larger sample size because you are running a less powerful statistical test.
Easier to start with the test that's most likely to work, and narrow it down from there if you succeed
Having men sniff three different samples would still allow for saline as a control and wouldn't really make the data set that much more complicated.
Is that an assumption or do you have experience with research like this?
Just college lab courses, but come on, it's pretty basic. The experiment merely tests a single variable by changing it while keeping everything else the same. There could have been dozens of different samples that men sniffed and it wouldn't really make the data complicated.
It would increase the length of the test, though, so dozens of samples would have been cumbersome. But just two? Literally just "see how the test group responds to sample 1, sample 2, and the control sample"? That's not complicated science. You probably did that in highschool lol
Testing multiple hypotheses this way still requires additional sample size because there is an increased error likelihood. From a statistical point of view, the most efficient test may be to stick to one variable like this.
I'm guessing they had to stay within their funding/budget and didn't want to reduce the sample size to increase the number of variables tested. MRIs are expensive
they should just be getting time on the machine although maybe also tech time. either way doing multiple with a single individual is easier than more individuals.
But that makes it more complex because you have to start worrying about the order they're done in because it might be different emotions playing your first or third game plus the effect might linger, take time to show, etc.
Far better to answer one simple question and prove there is an effect then follow up tests can look at finding the bounds to that and starting to narrow in on identifying mechanics.
its been done with other things. its an mri so regardless of order the simuli should light up the brain regions. either it does it or it does not.
I could believe that. Hopefully they can get more funding for further testing.
I have experience and yes, it would not make it much more complicated. two types of controls are actually common although using male tears would not be a control. but like 5 research targets and 2 controls would not be beyond belief.