| Title |
Stimulant Treatment Reduces Lapses in Attention among Children with ADHD: The Effects of Methylphenidate on Intra-Individual Response Time Distributions
|
|---|---|
| Published in |
Research on Child and Adolescent Psychopathology, March 2009
|
| DOI | 10.1007/s10802-009-9316-2 |
| Pubmed ID | |
| Authors |
Sarah V. Spencer, Larry W. Hawk, Jerry B. Richards, Keri Shiels, William E. Pelham, James G. Waxmonsky |
| Abstract |
Recent research has suggested that intra-individual variability in reaction time (RT) distributions of children with ADHD is characterized by a particularly large rightward skew that may reflect lapses in attention. The purpose of the study was to provide the first randomized, placebo-controlled test of the effects of the stimulant methylphenidate (MPH) on this tail and other RT distribution characteristics. Participants were 49 9- to 12-year-old children with ADHD. Children participated in a 3-day double-blind, placebo-controlled medication assessment during which they received long-acting MPH (Concerta), with the nearest equivalents of 0.3 and 0.6 mg/kg t.i.d. immediate-release MPH. Children completed a simple two-choice speeded discrimination task on and off of medication. Mode RT and deviation from the mode were used to examine the peak and skew, respectively, of RT distributions. MPH significantly reduced the peak and skew of RT distributions. Importantly, the two medication effects were uncorrelated suggesting that MPH works to improve both the speed and variability in responding. The improvement in variability with stimulant treatment is interpreted as a reduction in lapses in attention. This, in turn, may reflect stimulant enhancement of self-regulatory processes theorized to be at the core of ADHD. |
Mendeley readers
The data shown below were compiled from readership statistics for 130 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Germany | 2 | 2% |
| United States | 2 | 2% |
| Australia | 1 | <1% |
| Israel | 1 | <1% |
| Netherlands | 1 | <1% |
| New Zealand | 1 | <1% |
| United Kingdom | 1 | <1% |
| Spain | 1 | <1% |
| Argentina | 1 | <1% |
| Other | 0 | 0% |
| Unknown | 119 | 92% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 23 | 18% |
| Student > Master | 21 | 16% |
| Researcher | 15 | 12% |
| Student > Doctoral Student | 12 | 9% |
| Other | 8 | 6% |
| Other | 28 | 22% |
| Unknown | 23 | 18% |
| Readers by discipline | Count | As % |
|---|---|---|
| Psychology | 54 | 42% |
| Medicine and Dentistry | 19 | 15% |
| Social Sciences | 8 | 6% |
| Agricultural and Biological Sciences | 6 | 5% |
| Computer Science | 3 | 2% |
| Other | 11 | 8% |
| Unknown | 29 | 22% |
Attention Score in Context
This research output has an Altmetric Attention Score of 11. 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 11 September 2019.
All research outputs
#3,272,286
of 25,371,288 outputs
Outputs from Research on Child and Adolescent Psychopathology
#311
of 2,047 outputs
Outputs of similar age
#12,035
of 116,134 outputs
Outputs of similar age from Research on Child and Adolescent Psychopathology
#3
of 16 outputs
Altmetric has tracked 25,371,288 research outputs across all sources so far. Compared to these this one has done well and is in the 87th percentile: it's in the top 25% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 2,047 research outputs from this source. They typically receive more attention than average, with a mean Attention Score of 9.5. This one has done well, scoring higher than 84% 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 116,134 tracked outputs that were published within six weeks on either side of this one in any source. This one has done well, scoring higher than 89% of its contemporaries.
We're also able to compare this research output to 16 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 81% of its contemporaries.