This study is designed to investigate multitasking deficits, with a particular interest in reducing costs related to dual-tasking (dividing attention between tasks) and task-switching (switching between tasks) using noninvasive brain stimulation.

Inclusion Criteria:

• Must be able to participate in non invasive brain stimulation research
• Must be a fluent English speaker
• Must be at least 18 years old
• Must be right-handed
• Must have normal or corrected-to-normal vision

Exclusion Criteria:

• Any history of complications with non invasive brain stimulation research
• Any metallic implants in head
• Any implanted internal or external electrical stimulation device
• Any adverse reaction to tDCS or other forms of low current brain stimulation
• Any history of seizure
• Any history of head injury
• Any illness that caused brain injury
• Any other brain-related condition
• Any diagnosis of neurological or psychiatric disorder
• A sensitive scalp