Frontier mental health research: psychedelics & drug studies

Each month our editorial team sifts through hundreds of papers and curates notable findings—for practitioners and informed readers who want to stay current with the evidence. Subscribe to the monthly Research Digest for expert analysis and concise summaries of key papers.

2 papers

The Worldwide Prevalence of ADHD: A Systematic Review and Metaregression Analysis

Guilherme V. Polanczyk, Maurício Silva de Lima, Bernardo Lessa Horta, Joseph Biederman, Luís Augusto Rohde
American Journal of Psychiatry Summary & key facts 2007 5,230 citations

Our findings suggest that geographic location plays a limited role in the reasons for the large variability of ADHD/HD prevalence estimates worldwide. Instead, this variability seems to be explained primarily by the methodological characteristics of studies.

Attention Deficit Hyperactivity Disorder Cognitive Abilities and Testing

State Emotional Clarity Is an Indicator of Fluid Emotional Intelligence Ability

Nathaniel S Eckland, Renee J Thompson
PubMed Central (PMC) Summary & key facts 2023 6 citations

Emotional clarity means knowing and naming your own feelings. The paper reviews past research and argues that momentary or "state" emotional clarity — how clearly you understand your feelings in the moment — likely shows a person’s fluid emotional intelligence better than traditional tests or trait self-reports. The authors say…

Cognitive Abilities and Testing Emotional Intelligence and Performance Personality Traits and Psychology
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