Featured Research

from universities, journals, and other organizations

Socialization relative strength in fragile X longitudinal study

Date:
July 29, 2014
Source:
Emory Health Sciences
Summary:
Standard scores measuring 'adaptive behavior' in boys with fragile X syndrome tend to decline during childhood and adolescence, the largest longitudinal study of the inherited disorder to date has found.

Standard scores measuring "adaptive behavior" in boys with fragile X syndrome tend to decline during childhood and adolescence, the largest longitudinal study of the inherited disorder to date has found.

Related Articles


Adaptive behavior covers a range of everyday social and practical skills, including communication, socialization, and completing tasks of daily living such as getting dressed. In this study, socialization emerged as a relative strength in boys with fragile X, in that it did not decline as much as the other two domains of adaptive behavior measured: communication and daily living skills.

Fragile X syndrome is the leading inherited cause of intellectual disability and the leading single-gene risk factor for autism spectrum disorder. It affects one in 4000 boys and one in 8000 girls, and boys tend to be more severely affected, because boys have just one X chromosome while girls have two. Measured IQ shows a range from average to severe intellectual disability, with an average IQ of 40 in males who have complete silencing of the FMR1 gene.

The results are published in the journal Pediatrics.

The study's findings will help child development specialists refine educational programs for individuals with fragile X syndrome, and could inform the design of clinical trials now underway for drugs that target the molecular deficiencies arising in fragile X syndrome.

Adaptive behavior is often studied in individuals with intellectual disability, because it indicates someone's ability to function independently.

"Adaptive behavior is separate from measures of intelligence such as IQ, but it can be a more important predictor of success," says lead author Cheryl Klaiman, PhD, formerly of the Stanford University Center for Interdisciplinary Brain Sciences Center, now senior psychologist at Marcus Autism Center and assistant professor of pediatrics at Emory University School of Medicine.

"Our findings highlight the need for continued attention to adaptive behavior skills for individuals with fragile X syndrome, in both special education programs and home-based care."

Researchers from Stanford and the University of North Carolina followed the families of 275 children and adolescents with fragile X syndrome (186 were boys) and 225 typically developing children and adolescents. 60 percent of the typical controls were siblings of study participants with fragile X.

Study participants' caregivers were interviewed using the Vineland Adaptive Behavior Scales every two to four years. The Vineland framework asks caregivers whether the child never, sometimes/partially or always performs a given task, and was divided into socialization, communication and daily living realms.

For typically developing children, their average standard score in each area was around 100 and the average generally remained steady with age. For boys with fragile X, the average standard score for all three areas starts at around 60 in early childhood and declines significantly into the teens. Daily living skills did increase in males with fragile X after 14 years of age. This gain could perhaps be due to the increased efforts focused on teaching these skills prior to graduating from high school.

The decline doesn't mean that boys with fragile X are losing skills over time, Klaiman says.

"It does mean that they are not keeping pace with their typically developing peers of the same age, or expectations based on their initial scores in early childhood," she says.

Adaptive behavior scores for girls with fragile X start lower, compared to typically developing children, but do not decline as much as males' scores do over time. As a group, their scores also have a wider range. For girls, communication declines more than other domains.

This research was supported by the National Institute of Mental Health (MH064708, MH085899, MH050046, MH050047, MH61696, MH019908) and a gift from the Canel Family Fund.


Story Source:

The above story is based on materials provided by Emory Health Sciences. Note: Materials may be edited for content and length.


Journal Reference:

  1. C. Klaiman, E.-M. Quintin, B. Jo, A. A. Lightbody, H. C. Hazlett, J. Piven, S. S. Hall, A. L. Reiss. Longitudinal Profiles of Adaptive Behavior in Fragile X Syndrome. PEDIATRICS, 2014; 134 (2): 315 DOI: 10.1542/peds.2013-3990

Cite This Page:

Emory Health Sciences. "Socialization relative strength in fragile X longitudinal study." ScienceDaily. ScienceDaily, 29 July 2014. <www.sciencedaily.com/releases/2014/07/140729142039.htm>.
Emory Health Sciences. (2014, July 29). Socialization relative strength in fragile X longitudinal study. ScienceDaily. Retrieved December 17, 2014 from www.sciencedaily.com/releases/2014/07/140729142039.htm
Emory Health Sciences. "Socialization relative strength in fragile X longitudinal study." ScienceDaily. www.sciencedaily.com/releases/2014/07/140729142039.htm (accessed December 17, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Wednesday, December 17, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

UN: Up to One Million Facing Hunger in Ebola-Hit Countries

UN: Up to One Million Facing Hunger in Ebola-Hit Countries

AFP (Dec. 17, 2014) Border closures, quarantines and crop losses in West African nations battling the Ebola virus could lead to as many as one million people going hungry, UN food agencies said on Wednesday. Duration: 00:52 Video provided by AFP
Powered by NewsLook.com
When You Lose Weight, This Is Where The Fat Goes

When You Lose Weight, This Is Where The Fat Goes

Newsy (Dec. 17, 2014) Can fat disappear into thin air? New research finds that during weight loss, over 80 percent of a person's fat molecules escape through the lungs. Video provided by Newsy
Powered by NewsLook.com
Flu Outbreak Closing Schools in Ohio

Flu Outbreak Closing Schools in Ohio

AP (Dec. 17, 2014) A wave of flu illnesses has forced some Ohio schools to shut down over the past week. State officials confirmed one pediatric flu-related death, a 15-year-old girl in southern Ohio. (Dec. 17) Video provided by AP
Powered by NewsLook.com
Yoga Could Be As Beneficial For The Heart As Walking, Biking

Yoga Could Be As Beneficial For The Heart As Walking, Biking

Newsy (Dec. 17, 2014) Yoga can help your weight, blood pressure, cholesterol and heart just as much as biking and walking does, a new study suggests. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins