Although the empirical study of ADHD in a college student population is in “relative infancy,” this particular review supports several tentative conclusions:

• Approximately 2-8% of college students in the US report clinically significant levels of ADHD symptoms, and the prevalence of these symptoms vary across genders and fluctuates depending on the criteria for clinical significance.
• There is preliminary evidence that self-reported symptoms vary across countries, but these are the results of a single study.
• It is unclear how many college students with disabilities have diagnosed ADHD, although preliminary estimates place this figure at about 25%, and the number of students with ADHD is likely to vary significantly across universities.
• College students with significant ADHD symptoms obtain a lower GPA and are less likely to graduate than their neurotypical peers.

Equivocal findings have been found regarding the psychological functioning of college students with significant ADHD symptoms.

Conclusions based on the available literature (as of 2006) are tempered by the small number of studies that have been conducted as well as significant limitations of those investigations that have been completed.