WikiPsiquiatria - Posts previos
Mostrando entradas con la etiqueta longterm. Mostrar todas las entradas
Mostrando entradas con la etiqueta longterm. Mostrar todas las entradas

Corporal punishment may have long-term negative effects on children's intelligence

ScienceDaily (July 26, 2011) — Children in a school that uses corporal punishment performed significantly worse in tasks involving "executive functioning" -- psychological processes such as planning, abstract thinking, and delaying gratification -- than those in a school relying on milder disciplinary measures such as time-outs, according to a new study involving two private schools in a West African country.

The findings, published by the journal Social Development, suggest that a harshly punitive environment may have long-term detrimental effects on children's verbal intelligence and their executive-functioning ability. As a result, children exposed to a harshly punitive environment may be at risk for behavioral problems related to deficits in executive-functioning, the study indicates.

The study -- by Prof. Victoria Talwar of McGill University, Prof. Stephanie M. Carlson of the University of Minnesota, and Prof. Kang Lee of the University of Toronto, involved 63 children in kindergarten or first grade at two West African private schools. Their families lived in the same urban neighborhood. The parents were largely civil servants, professionals and merchants.

In one school, discipline in the form of beating with a stick, slapping of the head, and pinching was administered publicly and routinely for offenses ranging from forgetting a pencil to being disruptive in class. In the other school, children were disciplined for similar offenses with the use of time-outs and verbal reprimands.

While overall performance on the executive-functioning tasks was similar in the younger children from both schools, the Grade 1 children in the non-punitive school scored significantly higher than those in the punitive school. These results are consistent with research findings that punitive discipline may make children immediately compliant -- but may reduce the likelihood that they will internalize rules and standards. That, in turn, may result in lower self-control as children get older.

"This study demonstrates that corporal punishment does not teach children how to behave or improve their learning," Prof. Talwar said. "In the short term, it may not have any negative effects; but if relied upon over time it does not support children's problem-solving skills, or their abilities to inhibit inappropriate behaviour or to learn."

Despite the age-old debate over the effects of corporal punishment, few studies have examined the effects on executive-functioning ability. This new study uses a quasi-experimental design to derive data from a naturally occurring situation in which children were exposed to two different disciplinary environments. The parents of children in both schools endorsed physical punishment equally, suggesting that the school environment can account for the differences found.

There are many further questions that remain unanswered. "We are now examining whether being in a punitive environment day in and day out will have other negative impacts on children such as lying or other covert antisocial behaviors. Also, we are pursuing the long term consequences of experiencing corporal punishment. For example, what would children's cognitive and social development be 5 or 10 years down the road?," said Prof. Kang Lee.

The findings are relevant to current controversy. "In the U.S., 19 states still allow corporal punishment in schools, although more of them are now asking for parent permission to use it. With this new evidence that the practice might actually undermine children's cognitive skills needed for self-control and learning, parents and policy makers can be better informed," said Prof. Stephanie M. Carlson.

Story Source:

The above story is reprinted (with editorial adaptations by ScienceDaily staff) from materials provided by University of Toronto, via EurekAlert!, a service of AAAS.

Journal Reference:

Victoria Talwar, Stephanie M. Carlson and Kang Lee. Effects of a Punitive Environment on Children's Executive Functioning: A Natural Experiment. Social Development, 26 July 2011 DOI: 10.1111/j.1467-9507.2011.00617.x

Note: If no author is given, the source is cited instead.

Disclaimer: This article is not intended to provide medical advice, diagnosis or treatment. Views expressed here do not necessarily reflect those of ScienceDaily or its staff.



View the original article here

Link between childhood ADHD and substance abuse risk supported by long-term study data

ScienceDaily (May 31, 2011) — Analysis of data from two long-term studies of the impact of attention-deficit hyperactivity disorder (ADHD) on the development of psychiatric disorders in young adults confirms that ADHD alone significantly increases the risk of cigarette smoking and substance abuse in both boys and girls.

The report from a team of Massachusetts General Hospital (MGH) investigators will appear in the Journal of the American Academy of Child & Adolescent Psychiatry and has been released online.

"Our study, which is one of the largest set of longitudinal studies of this issue to date, supports the association between ADHD and substance abuse found in several earlier studies and shows that the increased risk cannot be accounted for by co-existing factors such as other psychiatric disorders or family history of substance abuse," says Timothy Wilens, MD, of the MGH Pediatric Psychopharmacology Unit, who led the study. "Overall, study participants diagnosed with ADHD had a one and a half times greater risk of developing substance abuse than did control participants."

While previous studies from investigators at MGH and elsewhere found an increased risk of substance abuse in adolescents and young adults with ADHD, questions have been raised about whether specific aspects of ADHD such as impulsive behavior, cognitive problems, school problems, accompanying conditions such as bipolar disorder or conduct disorder, or family factors were actually responsible for the risk. To get a clearer picture of the factors behind the increased risk, the researchers examined data from two previous studies -- one of boys, one of girls -- that analyzed the prevalence of a broad range of psychiatric and behavioral disorders in participants diagnosed with ADHD as children.

From those two studies, a decade of more of follow-up information was available for a total of 268 participants with ADHD and 220 control participants, both groups equally divided by gender. Among the ADHD participants, 32 percent developed some type of substance abuse, including cigarette smoking, during the follow-up period, while only 25 percent of control participants had substance abuse problems. Factors such as gender, cognitive difficulties, mood disorders, school problems or family history of substance abuse did not impact the risk. The only additional diagnosis that had an effect was conduct disorder, which tripled the risk when combined with ADHD.

"Anyone with ADHD needs to be counseled about the risk for substance abuse, particularly if they have any delinquency," explains Wilens. "We still need to understand why some kids with ADHD develop substance abuse and others don't, whether particular treatment approaches can prevent substance problems and how best to treat young adults that have both ADHD and substance abuse." Wilens is an associate professor of Psychiatry at Harvard Medical School.

Additional authors of the JAACAP report are MaryKate Martelon, MPH; Gagan Joshi, MD; Clancey Bateman; Ronna Fried, EdD; Carter Petty, MA, and Joseph Biederman, MD, all of the MGH Pediatric Psychopharmacology Unit. The study was supported by grants from the National Institutes of Health, the Eli Lilly and Company Foundation and the MGH Pediatric Psychopharmacology Philanthropy Fund.

Story Source:

The above story is reprinted (with editorial adaptations by ScienceDaily staff) from materials provided by Massachusetts General Hospital, via EurekAlert!, a service of AAAS.

Journal Reference:

Timothy E. Wilens, MaryKate Martelon, Gagan Joshi, Clancey Bateman, Ronna Fried, Carter Petty, Joseph Biederman. Does ADHD Predict Substance-Use Disorders? A 10-Year Follow-up Study of Young Adults With ADHD. Journal of the American Academy of Child & Adolescent Psychiatry, 2011; DOI: 10.1016/j.jaac.2011.01.021

Note: If no author is given, the source is cited instead.

Disclaimer: This article is not intended to provide medical advice, diagnosis or treatment. Views expressed here do not necessarily reflect those of ScienceDaily or its staff.



View the original article here

Medscape Psychiatry

Scientific American - Mind & Brain

Nature Reviews Neuroscience - Issue - nature.com science feeds

Nature Reviews Neuroscience - AOP - nature.com science feeds

Nature Neuroscience - Issue - nature.com science feeds

Nature Neuroscience - AOP - nature.com science feeds

Translational Psychiatry

Neuropsychopharmacology - AOP - nature.com science feeds

Neuropsychopharmacology - Issue - nature.com science feeds