• Frequently overlooks details or makes careless mistakes
• Often has difficulty maintaining focus on one task or play activity
• Often appears not to be listening when spoken to, including when there is no obvious distraction
• Frequently does not finish following instructions, failing to complete tasks
• Often struggles to organise tasks and activities, to meet deadlines, and to keep belongings in order
• Is frequently reluctant to engage in tasks which require sustained attention
• Frequently loses items required for tasks and activities
• Is frequently easily distracted by extraneous stimuli, including thoughts in adults and older teenagers
• Often forgets daily activities, or is forgetful while completing them.

• Struggles to maintain focus on tasks that aren't highly stimulating/rewarding or that require continuous effort; details are often missed, and careless mistakes are frequent in school and work tasks; tasks are often abandoned before they are completed.
• Easily distracted (including by own thoughts); may not listen when spoken to; frequently appears to be lost in thought
• Often loses things; is forgetful and disorganised in daily activities.

The individual may also meet the criteria for hyperactivity-impulsivity, but the ina

• Is often fidgeting or squirming in seat
• Frequently has trouble sitting still during dinner, class, in meetings, etc.
• Frequently runs around or climbs in inappropriate situations. In adults and teenagers, this may be present only as restlessness.
• Often cannot quietly engage in leisure activities or play
• Frequently seems to be "on the go" or appears uncomfortable when not in motion
• Often talks excessively
• Often answers a question before it is finished, or finishes people's sentences
• Often struggles to wait their turn, including waiting in lines
• Frequently interrupts or intrudes, including into others' conversations or activities, or by using people's things without asking.

• Excessive motor activity; struggles to sit still, often leaving their seat; prefers to run about; in younger children, will fidget when attempting to sit still; in adolescents and adults, a sense of physical restlessness or discomfort with being quiet and still.
• Talks too much; struggles to quietly engage in activities.
• Blurts out answers or comments; struggles to wait their turn in conversation, games, or activities; will interrupt or intrude on conversations or games.
• A lack of forethought or consideration of consequences when making decisions or taking action, instead tending to act immediately (e.g., physically dangerous behaviours including reckless driving; impulsive decisions).

The individual may also meet the criteria for inattention, but the hyperactive-impulsive symptoms are predominant.