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Journal of Pediatric Psychology Advance Access originally published online on June 14, 2007
Journal of Pediatric Psychology 2008 33(1):91-101; doi:10.1093/jpepsy/jsm047
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© The Author 2007. Published by Oxford University Press on behalf of the Society of Pediatric Psychology. All rights reserved. For permissions, please e-mail: journals.permissions@oxfordjournals.org

The Effects of Organophosphate Pesticide Exposure on Hispanic Children's Cognitive and Behavioral Functioning

Patricia Sánchez Lizardi, PhD1, Mary Kay O'Rourke, PhD2 and Richard J. Morris, PhD3

1Chula Vista Elementary School District, Pupil Services and Special Education, Chula Vista, California, 2College of Public Health, University of Arizona, and 3Department of Special Education, Rehabilitation and School Psychology, University of Arizona

All correspondence concerning this article should be addressed to Patricia Sánchez Lizardi, Pupil Services and Special Education, Chula Vista Elementary School District, 84 E J Street, Chula Vista, CA 91910, USA. E-mail: psanchez{at}cvesd.k12.ca.us.


  Abstract

Objective This study investigates the effects of Organophosphate (OP) pesticides exposure on the cognitive and behavioral functioning of Hispanic children living in an agricultural community. Methods Forty-eight children were administered a battery of cognitive measures, and their parents and teachers completed behavior rating scales. Children provided a urine sample for analysis of OP pesticides metabolites. Results All children had a detectable level of at least one OP pesticide metabolite. Higher OP pesticide metabolite concentration levels were significantly correlated with poorer performance on some subtests of the Wisconsin Card Sorting Test. However, the significance of this association was dependent upon the inclusion of two samples with noticeable higher OP pesticide metabolite concentration levels. Conclusions Short-term OP pesticide exposure seems to have deleterious effects on children's speed of attention, sequencing, mental flexibility, visual search, concept formation, and conceptual flexibility. This study is among a relatively small number of studies investigating an extremely complex problem. Limitations and suggestions for future studies are discussed.

Key words: children's cognitive and behavioral functioning; organophosphates; pesticides exposure.

Received January 7, 2007; revision received April 15, 2007; revision received May 7, 2007; accepted May 9, 2007


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Home page
 J Pediatr PsycholHome page
C. Gresham and F. LoVecchio
Letter to the Editor: The Effects of Organophosphate Pesticide Exposure on Hispanic Children's Cognitive and Behavioral Functioning
J. Pediatr. Psychol., May 1, 2008; 33(4): 446 - 446.
[Full Text] [PDF]

Home page
 J Pediatr PsycholHome page
P. Sanchez Lizardi, M. K. O'Rourke, and R. J. Morris
Response
J. Pediatr. Psychol., May 1, 2008; 33(4): 447 - 448.
[Full Text] [PDF]


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