Article
Psychology, Developmental
Michael A. Levine, Huan Chen, Ericka L. Wodka, Brian S. Caffo, Joshua B. Ewen
Summary: This study compared the relationship between index scores and factor analysis results in children with autism and typically developing children in the WISC test. The results showed less unique correlations between index scores and factor analysis results in children with autism, especially in working memory. Therefore, the index scores in the WISC test do not have the desired statistical independence in autistic samples.
JOURNAL OF AUTISM AND DEVELOPMENTAL DISORDERS
(2023)
Article
Psychiatry
Akanksha Chaurasiya, Jay Kumar Ranjan, Nityanand Pandey, Hari Shanker Asthana
Summary: The study aimed to develop a method to estimate premorbid IQ of Hindi speaking Indian population through the development and standardization of a Hindi vocabulary test. By developing equations for estimating premorbid verbal and performance IQ, the study found these equations to be significant and valid in both normal and brain injury population for predicting verbal and performance IQ.
ASIAN JOURNAL OF PSYCHIATRY
(2022)
Article
Environmental Sciences
Carly V. Goodman, Morteza Bashash, Rivka Green, Peter Song, Karen E. Peterson, Lourdes Schnaas, Adriana Mercado-Garcia, Sandra Martinez-Medina, Mauricio Hernandez-Avila, Angeles M. Martinez-Mier, Martha Tellez-Rojo, Howard Hu, Christine Till
Summary: This study investigated the impact of prenatal fluoride exposure on children's IQ. The results showed a negative association between prenatal fluoride exposure and IQ, particularly in non-verbal intelligence.
ENVIRONMENTAL RESEARCH
(2022)
Article
Psychology, Multidisciplinary
Lina Pezzuti, Morena Farese, James Dawe, Marco Lauriola
Summary: This study assessed the IQ and cognitive abilities of a sample of gifted Italian children and found that they excelled in verbal comprehension and visual-perceptual reasoning. It was also discovered that mothers outperformed their children in the processing speed domain, and children's IQ was positively related to that of their mothers. These findings suggest that intellectual abilities, especially working memory and processing speed, may be inherited across generations.
JOURNAL OF INTELLIGENCE
(2022)
Article
Clinical Neurology
Junko Matsuo, Hiroaki Hori, Ikki Ishida, Moeko Hiraishi, Miho Ota, Shinsuke Hidese, Yukihito Yomogida, Hiroshi Kunugi
Summary: This study found that patients with bipolar disorder (BD) have more severe cognitive impairments in depressed states compared to those with major depressive disorder (MDD), especially in perceptual organization, working memory, and processing speed. However, in euthymic states, cognitive impairments in both groups appear to be attenuated.
PSYCHIATRY AND CLINICAL NEUROSCIENCES
(2021)
Article
Environmental Sciences
Regina M. Simeone, Penelope P. Howards, Elizabeth Anderson, Todd A. Jusko, Beata Drobna, Anton Kocan, Kamil Conka, Anna Fabisikova, Lubica Palkovicova Murinova, Richard L. Canfield, Dean Sonneborn, Sona Wimmerova, Kelly Thevenet-Morrison, Tomas Trnovec, Irva Hertz-Picciotto, Eva Sovcikova
Summary: The study on 472 mother-child pairs in eastern Slovakia found that pre-and postnatal levels of PCB-153 and PCB-118 were not associated with cognitive performance on the WPPSI-III. However, higher postnatal PCB concentrations were possibly linked to more sleep problems, feelings of depression, and anxiousness.
Article
Audiology & Speech-Language Pathology
Peipei Fei, Wafaa Shehata-Dieler, Lynn Huestegge, Rudolf Hagen, Heike Kuehn
Summary: This study aims to track the long-term development of verbal and nonverbal intelligence in children with cochlear implants. The results suggest that children with cochlear implants can achieve intellectual abilities comparable to those of their normal-hearing peers by around the third year after implantation and continue to improve over the following 2 years.
Article
Neurosciences
Carly V. Goodman, Christine Till, Rivka Green, Jana El-Sabbagh, Tye E. Arbuckle, Richard Hornung, Bruce Lanphear, Jean R. Seguin, Linda Booij, Mandy Fisher, Gina Muckle, Maryse F. Bouchard, Jillian Ashley-Martin
Summary: In a Canadian pregnancy and birth cohort, higher prenatal exposure to perfluoroalkyl substances (PFAS) was associated with lower performance IQ in males, while no significant associations were found in females. This suggests a sex-specific relationship between prenatal PFAS exposure and male neurodevelopment.
NEUROTOXICOLOGY AND TERATOLOGY
(2023)
Article
Education, Special
Samer Mohammad Abu Drei
Summary: This study aimed to identify the Wechsler-4 Intelligence Scale for Deaf people with Moderate Intellectual Disability. The results showed the overall intelligence level for deaf students in Jordan was 50.23. Gender differences were found in the Perceptual Reasoning Index, with males performing better than females, while no differences were found in intelligence levels attributed to hearing impairment.
INTERNATIONAL JOURNAL OF EARLY CHILDHOOD SPECIAL EDUCATION
(2021)
Article
Pediatrics
Ylva F. Kaul, Nima Naseh, Katarina Strand Brodd, Birgitta Bohm, Gerd Holmstrom, Lena Hellstrom-Westas
Summary: The study aimed to investigate cognitive outcomes in children born very preterm at 6.5 years old, in relation to neonatal characteristics and 2.5-year neurodevelopment. Neonatal factors such as gestational age, retinopathy of prematurity, and treated persistent ductus arteriosus were independently related to the 6.5-year outcome. Although Bayley-III cognitive scores explained a portion of the Full-Scale Intelligence Quotient, individual predictions based on neonatal risks and 2.5-year test results were insufficient to identify all high-risk children for impaired cognition at 6.5 years.
Article
Environmental Sciences
Kyung-Shin Lee, Kyoung-Nam Kim, Yebin D. Ahn, Yoon-Jung Choi, Jinwoo Cho, Yoonyoung Jang, Youn-Hee Lim, Johanna Inhyang Kim, Choong Ho Shin, Young Ah Lee, Bung-Nyun Kim, Yun-Chul Hong
Summary: The study revealed a negative association between prenatal and postnatal exposure to a mixture of four metals and children's IQ at 6 years old. Specifically, manganese levels at age 4 and 6 were significant contributing factors to children's IQ.
ENVIRONMENT INTERNATIONAL
(2021)
Review
Substance Abuse
Gretchen Bandoli, Shana Hayes, Erin Delker
Summary: Although abstinence is recommended in pregnancy, many pregnancies are exposed to alcohol. Observational studies of the effects of low to moderate prenatal alcohol exposure (PAE) and neurodevelopmental outcomes have yielded inconsistent results. The purpose of this narrative review is to summarize these inconsistencies and provide recommendations on how to advance future research in this area.
ALCOHOL RESEARCH-CURRENT REVIEWS
(2023)
Article
Medicine, General & Internal
Maria Sofologi, Georgia Papantoniou, Theodora Avgita, Aikaterina Lyraki, Chrysoula Thomaidou, Harilaos Zaragas, Georgios Ntritsos, Panagiotis Varsamis, Konstantinos Staikopoulos, Georgios Kougioumtzis, Aphrodite Papantoniou, Despina Moraitou
Summary: This paper explores the psychometric properties of the Greek version of the Gifted Rating Scales-Preschool/Kindergarten Form (GRS-P) through data from two samples. The results show that the scales have excellent internal consistency, good factorial and convergent/discriminant validity. Additionally, it is found that the GRS-P is a reliable and valid tool for teachers to assess gifted students in a Greek cultural context.
Article
Public, Environmental & Occupational Health
Iben H. Beck, Niels Bilenberg, Kirstine A. Davidsen, Anne A. Rasmussen, Henriette Boye, Tina K. Jensen
Summary: This study assessed intelligence quotient scores of 7-year-old children in Denmark and investigated potential predictors. The results showed that girls and children of mothers with higher education had higher intelligence quotient scores, while boys and children of mothers with lower education had lower scores. Maternal education and child sex were strong predictors of intelligence quotient scores.
SCANDINAVIAN JOURNAL OF PUBLIC HEALTH
(2023)
Article
Clinical Neurology
Claire D. Coles, Julie A. Kable, Iryna Granovska, Ala O. Pashtepa, Wladimir Wertelecki, Christina D. Chambers
Summary: Prenatal alcohol exposure can affect cognitive functioning, particularly executive functions, in preschool children. Higher alcohol doses during pre-pregnancy and mid-gestation were associated with poorer performance on tests measuring attention, working memory, and cognitive flexibility. These findings suggest that early identification and intervention for alcohol-exposed children may be important for mitigating cognitive deficits.
CHILD NEUROPSYCHOLOGY
(2021)
Article
Psychology, Clinical
Katherine L. Musliner, Klaus K. Andersen, Esben Agerbo, Clara Albinana, Bjarni J. Vilhjalmsson, Veera M. Rajagopal, Jonas Bybjerg-Grauholm, Marie Baekved-Hansen, Carsten B. Pedersen, Marianne G. Pedersen, Trine Munk-Olsen, Michael E. Benros, Thomas D. Als, Jakob Grove, Thomas Werge, Anders D. Borglum, David M. Hougaard, Ole Mors, Merete Nordentoft, Preben B. Mortensen, Major Depressive Disorder Working Group Of The Psychiatric Genomics Consortium, Nis P. Suppli
Summary: This study examined the relationship between polygenic liability for depression and number of stressful life events (SLEs) as risk factors for early-onset depression treated in psychiatric hospitals in Denmark. The results showed that the risk for depression increased with higher polygenic liability and more SLEs, and there was a small interaction between these two factors. Combining information on these two risk factors could potentially be useful for identifying high-risk individuals.
PSYCHOLOGICAL MEDICINE
(2023)
Article
Psychology, Clinical
Zeynep Yilmaz, Katherine Schaumberg, Matthew Halvorsen, Erica L. Goodman, Leigh C. Brosof, James J. Crowley, Carol A. Mathews, Manuel Mattheisen, Gerome Breen, Cynthia M. Bulik, Nadia Micali, Stephanie C. Zerwas
Summary: This study found a genetic overlap between anorexia nervosa (AN), obsessive-compulsive disorder (OCD), and anxiety symptoms, with a potential sex-specific contribution of genetic risk. AN and AN/OCD polygenic scores (PGS) played a more prominent role in predicting eating disorder and anxiety symptoms, while OCD PGS had a smaller effect. The results also suggest that compulsive exercise may have a transdiagnostic genetic etiology.
PSYCHOLOGICAL MEDICINE
(2023)
Article
Psychology, Clinical
Jessica S. Johnson, Alanna C. Cote, Amanda Dobbyn, Laura G. Sloofman, Jiayi Xu, Liam Cotter, Alexander W. Charney, Andreas Birgegard, Jennifer Jordan, Martin Kennedy, Mikael Landen, Sarah L. Maguire, Nicholas G. Martin, Preben Bo Mortensen, Laura M. Thornton, Cynthia M. Bulik, Laura M. Huckins
Summary: This study used transcriptomic imputation and phenome-wide association studies to explore the clinical consequences of genetically regulated gene expression in anorexia nervosa (AN). The results identified several genes associated with AN and revealed associations with autoimmune, metabolic, and gastrointestinal diagnoses, as well as other clinical measures. The analysis also showed that body mass index (BMI) and sex moderated some of the associations. These findings provide potential avenues for further investigation into the functional mechanisms of AN-associated genes.
PSYCHOLOGICAL MEDICINE
(2023)
Article
Genetics & Heredity
Ditte Demontis, G. Bragi Walters, Georgios Athanasiadis, Raymond Walters, Karen Therrien, Trine Tollerup Nielsen, Leila Farajzadeh, Georgios Voloudakis, Jaroslav Bendl, Biau Zeng, Wen Zhang, Jakob Grove, Thomas D. Als, Jinjie Duan, F. Kyle Satterstrom, Jonas Bybjerg-Grauholm, Marie Baekved-Hansen, Olafur O. Gudmundsson, Sigurdur H. Magnusson, Gisli Baldursson, Katrin Davidsdottir, Gyda S. Haraldsdottir, Esben Agerbo, Gabriel E. Hoffman, Soren Dalsgaard, Joanna Martin, Marta Ribases, Dorret Boomsma, Maria Soler Artigas, Nina Roth Mota, Daniel Howrigan, Sarah E. Medland, Tetyana Zayats, Veera M. Rajagopal, Merete Nordentoft, Ole Mors, David M. Hougaard, Preben Bo Mortensen, Mark J. Daly, Stephen Faraone, Hreinn Stefansson, Panos Roussos, Barbara Franke, Thomas Werge, Benjamin M. Neale, Kari Stefansson, Anders D. Borglum
Summary: This study conducted a meta-analysis of genome-wide association studies on ADHD and identified 27 significant genetic loci associated with ADHD. They also found that these loci were enriched with genes involved in early brain development. Moreover, they discovered an increased load of rare protein-truncating variants in ADHD, implicating SORCS3 as a potential gene involved in ADHD.
Article
Multidisciplinary Sciences
Veera M. Rajagopal, Andrea Ganna, Jonathan R. Coleman, Andrea Allegrini, Georgios Voloudakis, Jakob Grove, Thomas D. Als, Henriette T. Horsdal, Liselotte Petersen, Vivek Appadurai, Andrew Schork, Alfonso Buil, Cynthia M. Bulik, Jonas Bybjerg-Grauholm, Marie Baekvad-Hansen, David M. Hougaard, Ole Mors, Merete Nordentoft, Thomas Werge, Preben Bo Mortensen, Gerome Breen, Panos Roussos, Robert Plomin, Esben Agerbo, Anders D. Borglum, Ditte Demontis
Summary: Individuals with psychiatric disorders show cognitive differences compared to the general population, which can be observed early in school performance and are genetically influenced. A genome-wide association study revealed a strong negative correlation between math performance and risk for most psychiatric disorders, while language performance correlated positively with risk for certain disorders, especially schizophrenia. Furthermore, genetic variants related to schizophrenia risk and better language performance are more common in individuals involved in creative professions compared to the general population. These findings suggest a potential genetic overlap between language ability, creativity, and psychopathology.
SCIENTIFIC REPORTS
(2023)
Article
Obstetrics & Gynecology
Agnes K. Ladelund, Julie A. Slavensky, Frederik J. Bruun, Emilie Pi Fogtmann Sejer, Erik Lykke Mortensen, Steen Ladelund, Ulrik S. Kesmodel
Summary: Birth by elective cesarean section (CS) is suggested to reduce the risk of birth-related infant mortality and injury, but it may increase the risk of somatic immune-related diseases. This study investigates the association between CS delivery and school performance and intelligence among youth.
ACTA OBSTETRICIA ET GYNECOLOGICA SCANDINAVICA
(2023)
Correction
Genetics & Heredity
Ditte Demontis, G. Bragi Walters, Georgios Athanasiadis, Raymond Walters, Karen Therrien, Trine Tollerup Nielsen, Leila Farajzadeh, Georgios Voloudakis, Jaroslav Bendl, Biau Zeng, Wen Zhang, Jakob Grove, Thomas D. Als, Jinjie Duan, F. Kyle Satterstrom, Jonas Bybjerg-Grauholm, Marie H. Baekved-Hansen, Olafur Gudmundsson, Sigurdur Magnusson, Gisli Baldursson, Katrin C. Davidsdottir, Gyda Haraldsdottir, Esben Agerbo, Gabriel M. Hoffman, Soren Dalsgaard, Jonna Martin, Marta Ribases, Dorret H. Boomsma, Maria Soler Artigas, Nina Roth Mota, Daniel Howrigan, Sarah J. Medland, Tetyana J. Zayats, Veera Rajagopal, Merete Nordentoft, Ole Mors, David M. Hougaard, Preben Bo Mortensen, Mark J. Daly, Stephen V. Faraone, Hreinn Stefansson, Panos Roussos, Barbara Franke, Thomas Werge, Benjamin M. Neale, Kari Stefansson, Anders D. Borglum
Article
Genetics & Heredity
Shing Wan Choi, Judit Garcia-Gonzalez, Yunfeng Ruan, Hei Man Wu, Christian Porras, Jessica Johnson, Clive Hoggart, Paul O'Reilly
Summary: Polygenic risk scores (PRSs) are widely used in biomedicine and have become a leading advance in recent years. However, current methods for computing PRSs often lose key information about an individual's genetic profile. In this study, we introduce a pathway-based PRS method that calculates polygenic scores across genomic pathways for each individual, providing individual-level estimates of genetic liability for each pathway. We find that pathway-based PRSs have similar capabilities for evaluating pathway enrichment and disease stratification compared to leading methods, with the advantage of offering pathway-level insights.
Article
Psychiatry
Pritesh Jain, Tyne Miller-Fleming, Apostolia R. Topaloudi, Dongmei K. Yu, Petros Drineas, Marianthi Georgitsi, Zhiyu Yang, Renata Rizzo, Kirsten R. Mueller-Vahl, Zeynep A. Tumer, Nanette Mol Debes, Andreas S. Hartmann, Christel E. Depienne, Yulia S. Worbe, Pablo Mir, Danielle C. Cath, Dorret Boomsma, Veit Roessner, Tomasz Wolanczyk, Piotr Janik, Natalia Szejko, Cezary Zekanowski, Csaba Barta, Zsofia Nemoda, Zsanett Tarnok, Joseph D. Buxbaum, Dorothy Grice, Jeffrey Glennon, Hreinn Stefansson, Bastian Hengerer, Noa Benaroya-Milshtein, Francesco Cardona, Tammy Hedderly, Isobel Heyman, Chaim Huyser, Astrid Morer, Norbert Mueller, Alexander Munchau, Kerstin J. Plessen, Cesare Porcelli, Susanne Walitza, Anette Schrag, Davide Martino, Andrea Dietrich, Carol A. Mathews, Jeremiah M. Scharf, Pieter J. Hoekstra, Lea K. Davis, Peristera Paschou
TRANSLATIONAL PSYCHIATRY
(2023)
Article
Genetics & Heredity
Xiaotong Wang, Alicia Walker, Joana A. Revez, Guiyan Ni, Mark J. Adams, Andrew M. McIntosh, Peter M. Psychiatric Genomics Consortium, Peter M. Visscher, Naomi R. Wray
Summary: In polygenic score (PGS) analysis, the coefficient of determination (R-2) is used to evaluate efficacy. However, in real data analyses, R-2 has been found to exceed the theoretical upper limit of the out-of-sample prediction calculated by SNP-based heritability (h(SNP)(2)). This is likely due to heterogeneities in cohort-specific h(SNP)(2) and genetic correlations between cohorts. We provide simulated and real data evidence to support these observations and emphasize the need for a better approach to address between-cohort heterogeneity.
AMERICAN JOURNAL OF HUMAN GENETICS
(2023)
Article
Biochemistry & Molecular Biology
Thomas D. D. Als, Mitja I. I. Kurki, Jakob Grove, Georgios Voloudakis, Karen Therrien, Elisa Tasanko, Trine Tollerup Nielsen, Joonas Naamanka, Kumar Veerapen, Daniel F. F. Levey, Jaroslav Bendl, Jonas Bybjerg-Grauholm, Biao Zeng, Ditte Demontis, Anders Rosengren, Georgios Athanasiadis, Marie Baekved-Hansen, Per Qvist, G. Bragi Walters, Thorgeir Thorgeirsson, Hreinn Stefansson, Katherine L. L. Musliner, Veera M. M. Rajagopal, Leila Farajzadeh, Janne Thirstrup, Bjarni J. J. Vilhjalmsson, John J. J. McGrath, Manuel Mattheisen, Sandra Meier, Esben Agerbo, Kari Stefansson, Merete Nordentoft, Thomas Werge, David M. M. Hougaard, Preben B. B. Mortensen, Murray B. B. Stein, Joel Gelernter, Iiris Hovatta, Panos Roussos, Mark J. J. Daly, Ole Mors, Aarno Palotie, Anders D. D. Borglum
Summary: This study conducted a genome-wide association study meta-analysis and identified 243 risk loci associated with depression in a large population. It revealed that depression is highly polygenic and also shares genetic risk with other psychiatric disorders, while influencing educational attainment and complex cognition domains. The analysis also demonstrated distinct polygenic architectures and significantly increased absolute risks for recurrence and psychiatric comorbidity among cases of depression with the highest polygenic burden, with considerable sex differences. These findings contribute to a deeper understanding of the biology underlying depression and inform precision medicine approaches to treatment.
Article
Biochemistry & Molecular Biology
Thomas Rolland, Freddy Cliquet, Richard J. L. Anney, Clara Moreau, Nicolas Traut, Alexandre Mathieu, Guillaume Huguet, Jinjie Duan, Varun Warrier, Swan Portalier, Louise Dry, Claire S. Leblond, Elise Douard, Frederique Amsellem, Simon Malesys, Anna Maruani, Roberto Toro, Anders D. Borglum, Jakob Grove, Simon Baron-Cohen, Alan Packer, Wendy K. Chung, Sebastien Jacquemont, Richard Delorme, Thomas Bourgeron
Summary: The prevalence of autism-associated genetic variants in individuals without a diagnosis of autism is explored. These variants are associated with a decrease in fluid intelligence, qualification level, income, and an increase in metrics related to material deprivation. Autism-associated genes have a larger impact on these phenotypic features than other genes with loss-of-function variants.
Article
Psychology, Clinical
Sandra Feodor Nilsson, Theresa Wimberley, Helene Speyer, Carsten Hjorthoj, Seena Fazel, Merete Nordentoft, Thomas Munk Laursen
Summary: This study used Danish register data to investigate the association between hospital-based psychiatric disorders and sheltered homelessness. The findings revealed strong bidirectional associations between psychiatric disorders and homelessness, highlighting the need to address the high risks of accumulated mental and social problems.
PSYCHOLOGICAL MEDICINE
(2023)
Article
Multidisciplinary Sciences
Clara Albinana, Zhihong Zhu, Andrew J. Schork, Andres Ingason, Hugues Aschard, Isabell Brikell, Cynthia M. Bulik, Liselotte V. Petersen, Esben Agerbo, Jakob Grove, Merete Nordentoft, David M. Hougaard, Thomas Werge, Anders D. Borglum, Preben Bo Mortensen, John J. McGrath, Benjamin M. Neale, Florian Prive, Bjarni J. Vilhjalmsson
Summary: The authors have developed a multi-polygenic score framework that increases prediction accuracy for complex diseases and traits. This framework leverages a large library of polygenic scores and is well-suited for emerging biobank data. By utilizing genetically correlated phenotypes, the sample size can be effectively increased without the need for costly and time-consuming collection of additional samples.
NATURE COMMUNICATIONS
(2023)
Article
Psychology, Developmental
Tina R. Kilburn, Merete J. Sorensen, Mikael Thastum, Ronald M. Rapee, Charlotte U. Rask, Kristian B. Arendt, Anders H. Carlsen, Per H. Thomsen
Summary: Cognitive Behavioural Therapy (CBT) programs adapted to children with Autism Spectrum Disorder (ASD) effectively reduce anxiety when run in university clinics, and have potential efficacy in treating anxiety in children with ASD.
JOURNAL OF AUTISM AND DEVELOPMENTAL DISORDERS
(2023)