Below are a sample of published studies that are especially relevant in demonstrating the relationship between working memory and ADHD. All of the studies have been published in top quality scientific journals.

Note that these studies do not examine the efficacy of Cogmed Working Memory Training – review Cogmed’s studies here.
You can also read an explanation by Prof. Torkel Klingberg about Cogmed’s research.

Year	Publication	Title	Author	Abstract
1997	Psychological Bulletin	Behavioral inhibition, sustained attention, and executive functions: Constructing a unifying theory of ADHD.	Barkley	Link to abstract
2002	Nature Neuroscience	Neuroscience of attention-deficit/hyperactivity disorder: the search for endophenotypes	Castellanos et al.	Link to abstract
2005	Journal of the American Academy of Child and Adolescent Psychiatry	A meta-analysis of working memory impairments in children with attention-deficit/hyperactivity disorder.	Martinussen et al.	Link to abstract
2008	Journal of Abnormal Psychology	Cognitive inhibition and working memory in attention-deficit/hyperactivity disorder.	Engelhardt et al.	Link to abstract
2009	Journal of Abnormal Child Psychology	Hyperactivity in boys with attention-deficit/hyperactivity disorder (ADHD): A ubiquitous core symptom or manifestation of working memory deficits?	Rapport et al.	Link to abstract
2010	Journal of Abnormal Child Psychology	Competing core processes in attention-deficit/hyperactivity disorder (ADHD): Do working memory deficiencies underlie behavioral inhibition deficits?	Alderson et al.	Link to abstract
2010	Journal of Abnormal Child Psychology	ADHD and working memory: The impact of central executive deficits and exceeding storage/rehearsal capacity on observed inattentive behavior.	Kofler et al.	Link to abstract
2010	Journal of Abnormal Child Psychology	Working memory demands impair skill acquisition in children with ADHD.	Huang-Pollock et al.	Link to abstract