Giacomo Bignardi
@bignardi.bsky.social
Research Associate at the Social, Genetic & Developmental Psychiatry Centre, Kings College London. Interests: developmental psychology, data science, coffee. www.bignardi.co.uk
Pinned
OSF
osf.io
New preprint with @rogierk.bsky.social @paulbuerkner.com - we introduce "relative measurement uncertainty" - a reliability estimation method that's applicable across a broad class of Bayesian measurement models (e.g., generative-, computational- and item response theory-models osf.io/h54k8
Reposted by Giacomo Bignardi
Happy to share my new paper published in @nathumbehav.nature.com: A critical look at statistical power in computational modeling studies, particularly those based on model selection.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
November 17, 2025 at 6:13 PM
Happy to share my new paper published in @nathumbehav.nature.com: A critical look at statistical power in computational modeling studies, particularly those based on model selection.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Giacomo Bignardi
We wrote an article explaining why you shouldn't put several variables into a regression model and report which are statistically significant - even as exploratory research. bmjmedicine.bmj.com/content/4/1/.... How did we do?
October 27, 2025 at 5:39 PM
We wrote an article explaining why you shouldn't put several variables into a regression model and report which are statistically significant - even as exploratory research. bmjmedicine.bmj.com/content/4/1/.... How did we do?
Reposted by Giacomo Bignardi
New paper by brilliant final yer PhD student Blanca Piera Pi-Sunyer and colleagues, including 3 undergraduate students (Evans, Ratcliffe, Janaarthanan) 🤩
The Relationship between Perceived Friendship Quality and Self-Judgements in Adolescent Girls from London
journals.sagepub.com/doi/epub/10....
The Relationship between Perceived Friendship Quality and Self-Judgements in Adolescent Girls from London
journals.sagepub.com/doi/epub/10....
October 20, 2025 at 2:34 PM
New paper by brilliant final yer PhD student Blanca Piera Pi-Sunyer and colleagues, including 3 undergraduate students (Evans, Ratcliffe, Janaarthanan) 🤩
The Relationship between Perceived Friendship Quality and Self-Judgements in Adolescent Girls from London
journals.sagepub.com/doi/epub/10....
The Relationship between Perceived Friendship Quality and Self-Judgements in Adolescent Girls from London
journals.sagepub.com/doi/epub/10....
Reposted by Giacomo Bignardi
Blanca Piera Pi-Sunyer on how to make the world a better place for young people, the cumulative impact of adversity & how to mitigate it in the Gates Cambridge podcast, So, now what? - @cambridgeuni.bsky.social
January 31, 2025 at 10:32 AM
Blanca Piera Pi-Sunyer on how to make the world a better place for young people, the cumulative impact of adversity & how to mitigate it in the Gates Cambridge podcast, So, now what? - @cambridgeuni.bsky.social
Reposted by Giacomo Bignardi
This is really neat. I have borrowed the reliability() function to my `easyRasch` package, and use plausible values instead of fully Bayesian estimation to produce similar estimates/CIs, see code example below. RMU point estimates are similar to EAP reliability.
pgmj.github.io/easyRasch/re...
pgmj.github.io/easyRasch/re...
New preprint with @rogierk.bsky.social @paulbuerkner.com - we introduce "relative measurement uncertainty" - a reliability estimation method that's applicable across a broad class of Bayesian measurement models (e.g., generative-, computational- and item response theory-models osf.io/h54k8
OSF
osf.io
October 10, 2025 at 2:10 PM
This is really neat. I have borrowed the reliability() function to my `easyRasch` package, and use plausible values instead of fully Bayesian estimation to produce similar estimates/CIs, see code example below. RMU point estimates are similar to EAP reliability.
pgmj.github.io/easyRasch/re...
pgmj.github.io/easyRasch/re...
I've added a new example to our paper's repo, demonstrating how our reliability method replicates Cronbach's alpha for a simple model, but also how our method can account for: (i) binary data, (ii) varying numbers of items per pps, & (iii) improvement over trials www.bignardi.co.uk/8_bayes_reli...
October 8, 2025 at 11:31 AM
I've added a new example to our paper's repo, demonstrating how our reliability method replicates Cronbach's alpha for a simple model, but also how our method can account for: (i) binary data, (ii) varying numbers of items per pps, & (iii) improvement over trials www.bignardi.co.uk/8_bayes_reli...
New preprint with @rogierk.bsky.social @paulbuerkner.com - we introduce "relative measurement uncertainty" - a reliability estimation method that's applicable across a broad class of Bayesian measurement models (e.g., generative-, computational- and item response theory-models osf.io/h54k8
OSF
osf.io
October 1, 2025 at 8:17 AM
New preprint with @rogierk.bsky.social @paulbuerkner.com - we introduce "relative measurement uncertainty" - a reliability estimation method that's applicable across a broad class of Bayesian measurement models (e.g., generative-, computational- and item response theory-models osf.io/h54k8
📣New study 📣 We examined the prevalence of food insecurity and its association with mental health and wellbeing, using the 2023 @oxwell.bsky.social survey of 38,430 children and young people aged 8–19 in England with @sjblakemore.bsky.social @minafazeloxford.bsky.social doi.org/10.1002/jcv2...
JCPP Advances | ACAMH Child Development Journal | Wiley Online Library
BackgroundWe aimed to assess the prevalence of food insecurity reported by children and young people in four areas of England in 2023 and examine its association with mental health and wellbeing. Met...
doi.org
September 24, 2025 at 12:05 PM
📣New study 📣 We examined the prevalence of food insecurity and its association with mental health and wellbeing, using the 2023 @oxwell.bsky.social survey of 38,430 children and young people aged 8–19 in England with @sjblakemore.bsky.social @minafazeloxford.bsky.social doi.org/10.1002/jcv2...
Reposted by Giacomo Bignardi
New paper! Excellent work by @bignardi.bsky.social and @minafazeloxford.bsky.social, who leads the Oxwell study
The prevalence of food insecurity and its relationship with wellbeing in a large, cross-sectional study of children and young people in England
Out soon. Preprint:
osf.io/preprints/ps...
The prevalence of food insecurity and its relationship with wellbeing in a large, cross-sectional study of children and young people in England
Out soon. Preprint:
osf.io/preprints/ps...
OSF
osf.io
August 31, 2025 at 10:54 AM
New paper! Excellent work by @bignardi.bsky.social and @minafazeloxford.bsky.social, who leads the Oxwell study
The prevalence of food insecurity and its relationship with wellbeing in a large, cross-sectional study of children and young people in England
Out soon. Preprint:
osf.io/preprints/ps...
The prevalence of food insecurity and its relationship with wellbeing in a large, cross-sectional study of children and young people in England
Out soon. Preprint:
osf.io/preprints/ps...
Reposted by Giacomo Bignardi
Delighted to be hiring a new Clinical Psychology Lecturer to come and join our vibrant environment at the SGDP Centre @kingsioppn.bsky.social @kingscollegelondon.bsky.social please share!
my.corehr.com/pls/coreport...
my.corehr.com/pls/coreport...
my.corehr.com
August 7, 2025 at 8:39 AM
Delighted to be hiring a new Clinical Psychology Lecturer to come and join our vibrant environment at the SGDP Centre @kingsioppn.bsky.social @kingscollegelondon.bsky.social please share!
my.corehr.com/pls/coreport...
my.corehr.com/pls/coreport...
Reposted by Giacomo Bignardi
@drandreahoward.bsky.social, hold my beer..
Latent class growth models are worse than useless, and we've known this for more than 20 years.
(See Bauer 2007)
Latent class growth models are worse than useless, and we've known this for more than 20 years.
(See Bauer 2007)
i’m not going to write a thread today about problems with latent class growth analyses nope nope NOPE i won’t do it
June 20, 2025 at 7:05 PM
@drandreahoward.bsky.social, hold my beer..
Latent class growth models are worse than useless, and we've known this for more than 20 years.
(See Bauer 2007)
Latent class growth models are worse than useless, and we've known this for more than 20 years.
(See Bauer 2007)
Reposted by Giacomo Bignardi
🚨 New paper alert! 🚨
Larysa Zasiekina, @sjblakemore.bsky.social, Iryna Hlova, @bignardi.bsky.social and I investigated the prevalence of PTSD in adolescents who have experienced war.
Our systematic review and meta-analysis is linked below, but read on for highlights… 🧵
doi.org/10.1080/2000...
Larysa Zasiekina, @sjblakemore.bsky.social, Iryna Hlova, @bignardi.bsky.social and I investigated the prevalence of PTSD in adolescents who have experienced war.
Our systematic review and meta-analysis is linked below, but read on for highlights… 🧵
doi.org/10.1080/2000...
Prevalence of war-related posttraumatic stress disorder in adolescents: a systematic review and meta-analysis
Background: Posttraumatic stress disorder is common in civilians who are currently experiencing, or who have experienced, war. Most previous studies have focused on adult populations and, despite t...
doi.org
June 3, 2025 at 12:23 PM
🚨 New paper alert! 🚨
Larysa Zasiekina, @sjblakemore.bsky.social, Iryna Hlova, @bignardi.bsky.social and I investigated the prevalence of PTSD in adolescents who have experienced war.
Our systematic review and meta-analysis is linked below, but read on for highlights… 🧵
doi.org/10.1080/2000...
Larysa Zasiekina, @sjblakemore.bsky.social, Iryna Hlova, @bignardi.bsky.social and I investigated the prevalence of PTSD in adolescents who have experienced war.
Our systematic review and meta-analysis is linked below, but read on for highlights… 🧵
doi.org/10.1080/2000...
Amazing funded phd opportunity with great supervisors👇👇👇👇👇
Funded PhD opportunity with @sjblakemore.bsky.social and I, at Cambridge. We are looking for someone interested in developmental science, to start in the coming academic year. Please share it with anyone you think might be interested (see details attached 😁).
drive.google.com/file/d/1RIvg...
drive.google.com/file/d/1RIvg...
Funded PhD opportunity.pdf
drive.google.com
May 27, 2025 at 3:15 PM
Amazing funded phd opportunity with great supervisors👇👇👇👇👇
Reposted by Giacomo Bignardi
Revealed:
🥣 Diluted juice, no fruit or hot food: how schools are cutting their breakfast club offering due to squeezed funding in government pilot
🥣 Concerns about SEND provision at “inclusive” breakfast clubs
🥣 Diluted juice, no fruit or hot food: how schools are cutting their breakfast club offering due to squeezed funding in government pilot
🥣 Concerns about SEND provision at “inclusive” breakfast clubs
A month into one of the government's flagship education policies, early adopter breakfast club schools tell Tes about the cuts they have been forced to make to make funds go further.
Plus, a quarter have already considered dropping out entirely.
www.tes.com/magazine/new...
Plus, a quarter have already considered dropping out entirely.
www.tes.com/magazine/new...
Breakfast club schools dilute juice and avoid fruit as funds fall short
Many schools involved in the pilot scheme for free breakfast clubs are worried about not having enough funding to support pupils with SEND, a Tes survey reveals
www.tes.com
May 19, 2025 at 8:49 AM
Revealed:
🥣 Diluted juice, no fruit or hot food: how schools are cutting their breakfast club offering due to squeezed funding in government pilot
🥣 Concerns about SEND provision at “inclusive” breakfast clubs
🥣 Diluted juice, no fruit or hot food: how schools are cutting their breakfast club offering due to squeezed funding in government pilot
🥣 Concerns about SEND provision at “inclusive” breakfast clubs
Reposted by Giacomo Bignardi
Does anyone know of an available dataset including (1) passively collected data on what Apps are being used in the foreground of one's phone and when, & (2) mental health questionnaire measures (from 1 or many time points)?
Thank you 🙏
Thank you 🙏
April 4, 2025 at 9:28 AM
Does anyone know of an available dataset including (1) passively collected data on what Apps are being used in the foreground of one's phone and when, & (2) mental health questionnaire measures (from 1 or many time points)?
Thank you 🙏
Thank you 🙏
Reposted by Giacomo Bignardi
Our approach to understanding how adversities impact adolescent development often neglects the specificity and complexity of adolescence. In our new review, we propose the adolescent adverse experiences framework to capture adverse experiences at multiple levels: www.nature.com/articles/s41...
A framework for understanding adverse adolescent experiences - Nature Human Behaviour
Adolescence (ages 10–24) is characterized by cognitive, behavioural and social development. This Review proposes the adverse adolescent experiences (AAEs) framework to categorize and examine potential...
www.nature.com
March 3, 2025 at 4:05 PM
Our approach to understanding how adversities impact adolescent development often neglects the specificity and complexity of adolescence. In our new review, we propose the adolescent adverse experiences framework to capture adverse experiences at multiple levels: www.nature.com/articles/s41...
Reposted by Giacomo Bignardi
Data published today from the English Housing Survey shows overcrowding for social tenants having almost doubled in the last 20 years - now nearly one in 10 are overcrowded.
January 30, 2025 at 6:56 PM
Data published today from the English Housing Survey shows overcrowding for social tenants having almost doubled in the last 20 years - now nearly one in 10 are overcrowded.
Dress code: robes and skullcap optional
"...this is an official speaker invitation, to be a Distinguished Speaker at the upcoming “6th Global Conclave on Neurology and Neurological Disorders" (NEURO Conclave 2025)"
"...this is an official speaker invitation, to be a Distinguished Speaker at the upcoming “6th Global Conclave on Neurology and Neurological Disorders" (NEURO Conclave 2025)"
January 16, 2025 at 5:15 PM
Dress code: robes and skullcap optional
"...this is an official speaker invitation, to be a Distinguished Speaker at the upcoming “6th Global Conclave on Neurology and Neurological Disorders" (NEURO Conclave 2025)"
"...this is an official speaker invitation, to be a Distinguished Speaker at the upcoming “6th Global Conclave on Neurology and Neurological Disorders" (NEURO Conclave 2025)"
New paper! Adolescents more susceptible to anti-social influence on an experimental task reported lower compliance with future COVID social distancing rules. Prosociality also predicted future compliance, but less clear associations for other factors. OA Link: doi.org/10.1016/j.he...
January 10, 2025 at 1:58 PM
New paper! Adolescents more susceptible to anti-social influence on an experimental task reported lower compliance with future COVID social distancing rules. Prosociality also predicted future compliance, but less clear associations for other factors. OA Link: doi.org/10.1016/j.he...
APA-style Bayesians! Are we doing 95% CrI or 95%CI for credible intervals? #bayesianstatistics #psychology
January 10, 2025 at 1:04 PM
APA-style Bayesians! Are we doing 95% CrI or 95%CI for credible intervals? #bayesianstatistics #psychology
Reposted by Giacomo Bignardi
We are hiring! We're looking for a great project manager to help with a large-scale Wellcome funded study. If you know of anyone that this might appeal to, please share.
www.jobs.cam.ac.uk/job/49880/
www.jobs.cam.ac.uk/job/49880/
Project Manager (Part Time, Fixed Term) - Job Opportunities - University of Cambridge
Project Manager (Part Time, Fixed Term) in the MRC Cognition and Brain Sciences Unit at the University of Cambridge.
www.jobs.cam.ac.uk
January 10, 2025 at 11:39 AM
We are hiring! We're looking for a great project manager to help with a large-scale Wellcome funded study. If you know of anyone that this might appeal to, please share.
www.jobs.cam.ac.uk/job/49880/
www.jobs.cam.ac.uk/job/49880/
Reposted by Giacomo Bignardi
We’re seeking nominations for up to five outstanding dissertations in cognitive science for the Glushko Dissertation Prize!
Each prize will be accompanied by a ✨$10,000 award✨
Self-nominations are welcome!
Learn more and nominate at cognitivesciencesociety.org/glushko-diss...
🗓️ Deadline: Jan. 18
Each prize will be accompanied by a ✨$10,000 award✨
Self-nominations are welcome!
Learn more and nominate at cognitivesciencesociety.org/glushko-diss...
🗓️ Deadline: Jan. 18
December 23, 2024 at 7:47 PM
We’re seeking nominations for up to five outstanding dissertations in cognitive science for the Glushko Dissertation Prize!
Each prize will be accompanied by a ✨$10,000 award✨
Self-nominations are welcome!
Learn more and nominate at cognitivesciencesociety.org/glushko-diss...
🗓️ Deadline: Jan. 18
Each prize will be accompanied by a ✨$10,000 award✨
Self-nominations are welcome!
Learn more and nominate at cognitivesciencesociety.org/glushko-diss...
🗓️ Deadline: Jan. 18
American Psychological Association giving big South Park energy this morning
January 8, 2025 at 11:02 AM
American Psychological Association giving big South Park energy this morning
Reposted by Giacomo Bignardi
🚨 My team is hiring an undergraduate intern (UK universities only) - a great opportunity, if I can say so myself!
Please share widely.
Want more info? See here: www.linkedin.com/feed/update/...
Please share widely.
Want more info? See here: www.linkedin.com/feed/update/...
January 8, 2025 at 8:45 AM
🚨 My team is hiring an undergraduate intern (UK universities only) - a great opportunity, if I can say so myself!
Please share widely.
Want more info? See here: www.linkedin.com/feed/update/...
Please share widely.
Want more info? See here: www.linkedin.com/feed/update/...
Looking for a reference - does anyone know of any large, recent studies describing age trends in depression & anxiety in childhood and adolescence ideally separated by gender? Longitudinal or cross-sectional.
#devpsy #devpsyc #devpsychsky #devpsycsky #clinpsy
#devpsy #devpsyc #devpsychsky #devpsycsky #clinpsy
January 7, 2025 at 4:35 PM
Looking for a reference - does anyone know of any large, recent studies describing age trends in depression & anxiety in childhood and adolescence ideally separated by gender? Longitudinal or cross-sectional.
#devpsy #devpsyc #devpsychsky #devpsycsky #clinpsy
#devpsy #devpsyc #devpsychsky #devpsycsky #clinpsy