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Miri Forbes
2,114 posts
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Miri Forbes
@MiriForbes
Quantitative psychopathology researcher | Associate Professor | views mine | she/her | @miriforbes.bsky.social
Sydney, Australia
miriamkforbes.academic.ws
Joined July 2020
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  • Pinned
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    Miri Forbes
    @MiriForbes
    Oct 17, 2024
    What happens when we break down DSM diagnoses into their individual symptoms and rebuild our classification system from the ground up? Do we see familiar DSM constructs, HiTOP dimensions, or something else entirely? New paper out today! ✨ journals.sagepub.com/doi/10.1177/21… 1/🧵
    Title and author information for the paper at the link in the tweet
    This post is unavailable.
    125K
  • user avatar
    Miri Forbes
    @MiriForbes
    Mar 21, 2023
    Ever wondered how many symptoms make up all of adult psychopathology described in the DSM-5? It’s 628! How many do you think repeat across multiple diagnoses? If you answered 231 symptoms repeating a total of 1022 times (median 3 times per symptom, range 2-22), good job! 🧵
    A plot of the repetition among the symptoms in the DSM-5 showing substantial overlap within and between chapters of diagnoses. 202 primary disorders and specifiers are represented, and diagnostic criteria have been split into a list of 1419 constituent symptoms. Each dot on the circumference is a symptom; its size represents symptom frequency. Lines linking symptoms map the repetition among diagnoses within and between chapters.
    774K
  • user avatar
    Miri Forbes
    @MiriForbes
    Nov 30, 2023
    How do your favorite disorders fare in a data-driven reorganization of the DSM-5? Find out in this new preprint where we followed the patterns in 14,762 individuals’ symptoms with the goal of overcoming limitations in both the DSM and @HiTOP_system x.com/PsyArXiv_bot_v…
    A representation of how symptoms of some exemplar constructs in the DSM-5 map onto the hierarchical structure we found. On the left are examples of disorders with symptoms that mostly hung together in the data-driven structure (i.e., ‘notably homogenous disorders’) and on the right are examples of disorders with symptoms that scattered throughout the data-driven structure (i.e., ‘notably heterogeneous disorders’).
    This post is unavailable.
    223K
  • user avatar
    Miri Forbes
    @MiriForbes
    Mar 21, 2023
    Replying to @MiriForbes
    One disorder in particular stood out: The diagnostic criteria for major depression dominated the lists of symptoms that repeat the most. This is bad news for diagnostic accuracy, with misattribution of symptoms and inflated comorbidity seemingly likely outcomes. 6/
    Same as the previous plot, but highlighting symptoms of major depressive disorder as dominating the symptoms that repeat across the most diagnoses and chapters. The caption corresponds to 9 symptoms labelled in the figure and says “Nearly all of the symptoms that repeat most frequently, and that repeat across the most chapters, are symptoms of Major Depressive Disorder: 1. Insomnia - 22 occurrences across 8 chapters; 2. Difficulty concentrating - 17 occurrences across 7 chapters; 3. Hypersomnia - 17 occurrences across 6 chapters; 4. Psychomotor agitation - 16 occurrences across 5 chapters; 5. Depressed mood - 15 occurrences across 6 chapters; 6. Psychomotor retardation - 14 occurrences across 5 chapters; 7. Fatigue - 12 occurrences across 6 chapters; 8. Increased appetite - 12 occurrences across 5 chapters; Weight loss - 10 occurrences across 5 chapters”
    84K
  • user avatar
    Miri Forbes
    @MiriForbes
    Sep 1, 2020
    Does anyone have advice on how to manage a 'to read' pile? I download pdfs and put them in a folder, but often let the papers just sit there gathering digital dust. I'd love to hear how others chip away at staying on top of the literature #AcademicTwitter @AcademicChatter
  • user avatar
    Miri Forbes
    @MiriForbes
    Mar 21, 2023
    Replying to @MiriForbes
    This new preprint has some cool findings and very sexy figures that summarise five years of work on the symptom overlap among DSM-5 diagnostic criteria. psyarxiv.com/u56p2/ 2/
    OSF
    osf.io
    Elemental psychopathology: Distilling constituent symptoms and patterns of repetition in the...
    Background: The DSM-5 features hundreds of diagnoses comprising a multitude of symptoms, and there is considerable repetition in the symptoms among diagnoses. This repetition undermines what we can...
    27K
  • user avatar
    Miri Forbes
    @MiriForbes
    May 15, 2023
    So the good news is that in my current project I'm learning really cool stuff about a symptom-level structure of psychopathology, but the bad news is I'm now pretty sure my whole PhD was wrong
    GIF
    72K
  • user avatar
    Miri Forbes
    @MiriForbes
    Mar 21, 2023
    Replying to @MiriForbes
    For example, more than a third of the diagnoses have *every* symptom repeating in at least one other diagnosis These plots show the patterns of symptom repetition for each chapter (each in high resolution with symptom and diagnosis labels here: osf.io/6yrmx): 3/
    Plots of symptom repetition for all diagnoses, separately by DSM chapter, showing varying levels of repetition within and between chapters. Each circular plot represents a chapter, the rings within each circle correspond to diagnoses or specifiers, and each dot is a symptom. Joined dots falling along the same radius represent a symptom repeating within the chapter. Filled dots repeat in other chapters; empty dots only occur in one chapter.
    38K
  • user avatar
    Miri Forbes
    @MiriForbes
    Sep 4, 2023
    Now in print, open access in Psychological Medicine! 🎉 doi.org/10.1017/S00332… Thanks to you all for your enthusiastic response to the paper - it made it even more fun and rewarding for our team to work on. Now onto modelling these pesky symptoms in real world data!
    user avatar
    Miri Forbes
    @MiriForbes
    Mar 21, 2023
    Ever wondered how many symptoms make up all of adult psychopathology described in the DSM-5? It’s 628! How many do you think repeat across multiple diagnoses? If you answered 231 symptoms repeating a total of 1022 times (median 3 times per symptom, range 2-22), good job! 🧵
    A plot of the repetition among the symptoms in the DSM-5 showing substantial overlap within and between chapters of diagnoses. 202 primary disorders and specifiers are represented, and diagnostic criteria have been split into a list of 1419 constituent symptoms. Each dot on the circumference is a symptom; its size represents symptom frequency. Lines linking symptoms map the repetition among diagnoses within and between chapters.
    58K
  • user avatar
    Miri Forbes
    @MiriForbes
    Nov 17, 2021
    We have a new look official model for @HiTOP_system! It depicts everything covered in the original Kotov et al. 2017 paper in a single figure, including the components and traits from Figure 3, and the Externalizing superspectrum described in-text.
  • user avatar
    Miri Forbes
    @MiriForbes
    Oct 25, 2022
    Just got the call I’ll officially join the Associate Professor ranks in 2023!!
    GIF
  • user avatar
    Miri Forbes
    @MiriForbes
    Mar 21, 2023
    Replying to @MiriForbes
    All in all these patterns increase my motivation to do fine-grained work on the structure of psychopathology, which I believe can move us towards a better set of constructs to study. Preprint link again: psyarxiv.com/u56p2/ 7/7
    OSF
    osf.io
    Elemental psychopathology: Distilling constituent symptoms and patterns of repetition in the...
    Background: The DSM-5 features hundreds of diagnoses comprising a multitude of symptoms, and there is considerable repetition in the symptoms among diagnoses. This repetition undermines what we can...
    14K
  • user avatar
    Miri Forbes
    @MiriForbes
    Jan 9, 2022
    Replying to @Cassie_Boness
    GIF
  • user avatar
    Miri Forbes
    @MiriForbes
    Aug 25, 2021
    Just posted a preprint of a v. brief descriptive paper on the implications of the symptom-level overlap among DSM diagnoses for the HiTOP model. Mostly I had fun making this cool Sankey diagram, but I also found a few interesting results! psyarxiv.com/f5gqz/ 🧵