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Persistent cannabis users show neuropsychological decline from childhood to midlife

Overview of attention for article published in Proceedings of the National Academy of Sciences of the United States of America, August 2012
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  • In the top 5% of all research outputs scored by Altmetric
  • High Attention Score compared to outputs of the same age (99th percentile)
  • High Attention Score compared to outputs of the same age and source (99th percentile)

Citations

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1076 Dimensions

Readers on

mendeley
1635 Mendeley
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7 CiteULike
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Title
Persistent cannabis users show neuropsychological decline from childhood to midlife
Published in
Proceedings of the National Academy of Sciences of the United States of America, August 2012
DOI 10.1073/pnas.1206820109
Pubmed ID
Authors

Madeline H. Meier, Avshalom Caspi, Antony Ambler, HonaLee Harrington, Renate Houts, Richard S. E. Keefe, Kay McDonald, Aimee Ward, Richie Poulton, Terrie E. Moffitt

Abstract

Recent reports show that fewer adolescents believe that regular cannabis use is harmful to health. Concomitantly, adolescents are initiating cannabis use at younger ages, and more adolescents are using cannabis on a daily basis. The purpose of the present study was to test the association between persistent cannabis use and neuropsychological decline and determine whether decline is concentrated among adolescent-onset cannabis users. Participants were members of the Dunedin Study, a prospective study of a birth cohort of 1,037 individuals followed from birth (1972/1973) to age 38 y. Cannabis use was ascertained in interviews at ages 18, 21, 26, 32, and 38 y. Neuropsychological testing was conducted at age 13 y, before initiation of cannabis use, and again at age 38 y, after a pattern of persistent cannabis use had developed. Persistent cannabis use was associated with neuropsychological decline broadly across domains of functioning, even after controlling for years of education. Informants also reported noticing more cognitive problems for persistent cannabis users. Impairment was concentrated among adolescent-onset cannabis users, with more persistent use associated with greater decline. Further, cessation of cannabis use did not fully restore neuropsychological functioning among adolescent-onset cannabis users. Findings are suggestive of a neurotoxic effect of cannabis on the adolescent brain and highlight the importance of prevention and policy efforts targeting adolescents.

Twitter Demographics

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Mendeley readers

The data shown below were compiled from readership statistics for 1,635 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 34 2%
United Kingdom 9 <1%
Germany 7 <1%
Netherlands 5 <1%
Brazil 5 <1%
Spain 4 <1%
Chile 3 <1%
France 3 <1%
Canada 3 <1%
Other 21 1%
Unknown 1541 94%

Demographic breakdown

Readers by professional status Count As %
Student > Bachelor 272 17%
Researcher 244 15%
Student > Ph. D. Student 226 14%
Student > Master 201 12%
Other 111 7%
Other 354 22%
Unknown 227 14%
Readers by discipline Count As %
Psychology 384 23%
Medicine and Dentistry 308 19%
Agricultural and Biological Sciences 178 11%
Social Sciences 102 6%
Neuroscience 87 5%
Other 286 17%
Unknown 290 18%

Attention Score in Context

This research output has an Altmetric Attention Score of 3074. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 24 January 2023.
All research outputs
#1,802
of 23,018,998 outputs
Outputs from Proceedings of the National Academy of Sciences of the United States of America
#57
of 98,675 outputs
Outputs of similar age
#5
of 170,402 outputs
Outputs of similar age from Proceedings of the National Academy of Sciences of the United States of America
#3
of 982 outputs
Altmetric has tracked 23,018,998 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 99th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 98,675 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 37.1. This one has done particularly well, scoring higher than 99% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 170,402 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 99% of its contemporaries.
We're also able to compare this research output to 982 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 99% of its contemporaries.