SDD+SLI+ADHD=A Mouthful of Speech Sounds

The article I read for my January Exploring the Field entry was, "Children with Comorbid Speech Sound Disorder and Specific Language Impairment are at Increased Risk for Attention-Deficit/Hyperactivity Disorder," by Lauren M. McGrath, Christa Hutaff-Lee, Ashley Scott, Richard Boada, Lawrence D. Shriberg & Bruce F. Pennington.
The study was interested in the comorbidity of speech sound disorder (SSD) with attention deficit/hyperactivity disorder (ADHD). The purpose of their study was to fill what they considered a gap in the research of disorders comorbid with ADHD because previous studies did not use diagnostic criteria as precise as the current researchers employed and other comorbidity studies had focused mainly on links with reading disability (RD). They were also interested in the effect of specific language impairment (SLI) and two subgroups of SSD: persistent and normalized, on the symptomatology of ADHD.
108 SSD children and 41 controls ages 4 to 7 years were recruited and assessed for ADHD symptomatology by means of parent and teacher questionnaires and a DSM-IV ADHD rating scale. Children were also evaluated by the Sounds-in-Words subtest of the Goldman Fristoe Test of Articulation.
The results supported their first hypothesis that participants with both SSD and a SLI would show more symptomatology for ADHD than the groups without SLI and the control group. More specifically, the group with both SSD and SLI showed higher rates of inattentiveness than the other groups. Parents and teachers reported a higher rate of impairment for this group than the other groups as well. The researchers also hypothesized that persistence (specifically normalized) of the SSD would interact with SLI to increase ADHD symptomatology. There was a significant interaction between persistence and SLI, but instead of the persistent-type SSD interacting with SLI to intensify ADHD symptomatology, the group with normalized-type SSD + SLI showed more intense inattentive ADHD symptomatology than the other groups.
The researchers explained an interest in contributing their findings to the pursuit of genetic etiology for ADHD and its comorbid disorders.
I chose this article because I am interested in everything concerning ADHD. I have looked into other facets of this disorder, but because of the nature of our Junior Seminar, I decided to see its relationship to language: a facet I have not specifically explored until now. This article especially peaked my interest because its participants were children of the age group I am most interested in studying with relation to ADHD.
My specific interest is in studying factors influencing the development of ADHD by children of pre-school to early elementary school age. All obstacles eliminated, I would really be interested in studying or conducting a study that would examine the effects of nutrition, physical exercise, and/or sleeping habits on the alleviation of ADHD symptoms in children of this age group.
Even though this article was not specific to my highest interest in ADHD, it was useful because it exposed me to another facet of the disorder that I had not yet explored. I would have liked to see the researchers use participants who had actually been diagnosed with ADHD by a professional, but the variables in the study were very interesting.
http://0-www.springerlink.com.allecat3.allegheny.edu/content/j171kj8j1247071j/fulltext.html
Here is a sample ADHD rating scale I found. I do not know if it is the exact scale used in the study, but it was interesting to see what the parents and teachers may have been rating.
http://www.fmpe.org/en/documents/appendix/Appendix%201%20-%20ADHD%20Rating%20Scale.pdf






