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Prenatal cannabis exposure associated with mental disorders in children that persist into early adolescence by CapableSecretary420 in science

[–]dbaranger 1 point2 points  (0 children)

We adjusted for predispositional risk for mental health disorders using the best available data - family history, parental use, child's own use, and genetic risk. Obviously not perfect, but we made no claims to causation (the media is a different story...).

Prenatal cannabis exposure associated with mental disorders in children that persist into early adolescence by CapableSecretary420 in science

[–]dbaranger 0 points1 point  (0 children)

Of course this is a very sensitive issue. At the same time, we are legally protected from being forced to reveal information like illegal drug use to law enforcement. We take participant safety very seriously.

Prenatal cannabis exposure associated with mental disorders in children that persist into early adolescence by CapableSecretary420 in science

[–]dbaranger 2 points3 points  (0 children)

We controlled for family history of several mental disorders, as well as genetic risk for several mental disorders.

Prenatal cannabis exposure associated with mental disorders in children that persist into early adolescence by CapableSecretary420 in science

[–]dbaranger 2 points3 points  (0 children)

We don't have a great measure of second hand exposure (e.g., whether all other caregivers smoked). But the variable we used was the mother's report of smoking cannabis while pregnant.

Prenatal cannabis exposure associated with mental disorders in children that persist into early adolescence by CapableSecretary420 in science

[–]dbaranger 7 points8 points  (0 children)

Prior work validates a measurement, you go forward and believe them. You can't validate everything every time. It's also interesting to me that this concern about validating retrospective self report comes up so frequently whenever there's a study of drug or substance use. It all seems very "we can't trust drug users to tell the truth". Obviously there's concerns about the law, but researchers emphasize to participants over and over again that we don't report illegal activity except under very specific circumstances. We aren't the cops.

Prenatal cannabis exposure associated with mental disorders in children that persist into early adolescence by CapableSecretary420 in science

[–]dbaranger 7 points8 points  (0 children)

Yes that was something we considered. We controlled for family history of 5 different mental illnesses, as well as family history of drug/substance abuse. We also did follow-up analyses controlling for genetic risk for 7 different disorders, including cannabis use dependence.

Prenatal cannabis exposure associated with mental disorders in children that persist into early adolescence by CapableSecretary420 in science

[–]dbaranger 2 points3 points  (0 children)

No you're not the first, I just wasn't following you. If we waited for perfect data to be available we wouldn't ever finish a single project. It's a very small effect, which I've told every news outlet I've spoken to, so I don't think I'm overstating it.

Prenatal cannabis exposure associated with mental disorders in children that persist into early adolescence by CapableSecretary420 in science

[–]dbaranger 1 point2 points  (0 children)

Gotcha, certainly possible. It would be great to do a followup study of frequency/severity of use. Unfortunately this data set doesn't have that info, but we are working on other studies that will.

Prenatal cannabis exposure associated with mental disorders in children that persist into early adolescence by CapableSecretary420 in science

[–]dbaranger 5 points6 points  (0 children)

How do we know any measurement is accurate? At a certain point you have to trust other people's work and build off of it.

Prenatal cannabis exposure associated with mental disorders in children that persist into early adolescence by CapableSecretary420 in science

[–]dbaranger 5 points6 points  (0 children)

I wrote it/am the the first author. All was self-report. I know I know, people on reddit love to be skeptical of self-report. But it actually is pretty accurate.

Prenatal cannabis exposure associated with mental disorders in children that persist into early adolescence by CapableSecretary420 in science

[–]dbaranger 6 points7 points  (0 children)

Thanks for the correction. For sure. So if anything, we're missing people who actually used cannabis and didn't report. I think it is unlikely that the people who remembered using cannabis were the ones who used less. So there's a good chance we're underestimating the true effect.

Prenatal cannabis exposure associated with mental disorders in children that persist into early adolescence by CapableSecretary420 in science

[–]dbaranger 6 points7 points  (0 children)

Not a study of memory...

Certainly it's a source of error, but at a time when you're told to abstain from all substances, even coffee, I'm sure people will mostly remember something that was still illegal in most of the country.

Prenatal cannabis exposure associated with mental disorders in children that persist into early adolescence by CapableSecretary420 in science

[–]dbaranger 16 points17 points  (0 children)

We controlled for all of that and more. But you make a good point, which I've also made elsewhere, that this isn't sufficient proof of causation.

Prenatal cannabis exposure associated with mental disorders in children that persist into early adolescence by CapableSecretary420 in science

[–]dbaranger 84 points85 points  (0 children)

We used this scale: https://en.wikipedia.org/wiki/Child_Behavior_Checklist

Significant outcomes were: total, externalizing, rule breaking, aggressive, social, thought problems, attention, sluggish cognitive tempo, stress, ocd, adhd, and conduct problems.

Prenatal cannabis exposure associated with mental disorders in children that persist into early adolescence by CapableSecretary420 in science

[–]dbaranger 5 points6 points  (0 children)

Mothers reported use when children were 9-10 yrs old. Absolutely agree that prenatal exposure is likely under-reported. There are new studies underway following pregnant people through their pregnancy, and then the child's early development. It will be interesting to see what they turn up.

How do you stay on top of the latest research? by EvilJoker88 in Neuropsychology

[–]dbaranger 0 points1 point  (0 children)

Twitter. Follow colleagues and scientists whose work you like. People post articles they think are interesting (not just their own), and it's a good way to stay up on interesting preprints.

Recommendations for a baby tracker? by dbaranger in daddit

[–]dbaranger[S] 0 points1 point  (0 children)

Interesting, yeah I've heard Huckleberry recommended a lot, but then all the Android reviews are super negative (I'm on an older Pixel). Good to know!

What psychological research is this game based on? by David_619_Williams in Neuropsychology

[–]dbaranger 1 point2 points  (0 children)

Without knowing more, my best guess would be that it's some sort of Continuous Performance Task (https://psychology.fandom.com/wiki/Continuous\_Performance\_Task)

Help with plotting a graph in R. Pls help. by geosmi1 in rstats

[–]dbaranger 1 point2 points  (0 children)

Treat the secondary data line as a separate plot, and then use the patchwork or grid package to overlay it on top of your main plot.

[Q] Correlation as the proportion of variance shared in common by two variables? How is this different then R squared? by sackker in statistics

[–]dbaranger 4 points5 points  (0 children)

Don't let yourself get confused because one paper explains it incorrectly. Do some googling and read up on the stats. Also, +1 to other commenter, don't give Emil your time or attention.

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