Methods of treating psychiatric disorders are provided which include administration of one or more anti-epileptic agents and, optionally, one or more a psychostimulants. Also provided are pharmaceutical compositions comprising, in combination, one or more anti-epileptic agents and one or more psychostimulants. Psychiatric disorders include those associated with impaired cognitive processing, degenerative disorders such as Mild Cognitive Impairment, Parkinsons disease, dementia, non-compliance with therapeutic regimes and eating disorders, although without limitation thereto.