TBI and Behavior

Understanding Behavioral Changes After TBI

Traumatic brain injury can cause significant changes in behavior, personality, and emotional regulation. These changes are not intentional — they result from physical damage to brain structures responsible for impulse control, emotional processing, and social cognition. Understanding the neurobiological basis of these changes is the first step toward effective management and support.

The Frontal and Temporal Lobes

Damage to specific brain regions causes distinct behavioral changes:

• Frontal Lobe Damage: May cause disinhibition, impulsivity, perseveration, lack of motivation (apathy), and emotional dyscontrol
• Temporal Lobe Injury: Often results in lower frustration tolerance, altered mood states (typically depression), and memory difficulties

• Lack of insight and inability to self-monitor — person cannot see the effects of their behavior on others
• Inability to modulate behavior or responses appropriately to situations
• Appearance of being uncaring, lazy, or unmotivated when not directed by others
• Irritating or explosive social behaviors that neurologically intact individuals can inhibit
• Failure to change behavior patterns in response to typical consequences

• Cannot initiate activity, or stop once they've started
• Impulsive behavior — cannot inhibit responses
• Egocentrism — unable to see another's perspective
• Cannot understand or remember what is expected
• Cannot attend to what's important in their environment

• Confusion about expectations
• Inaccurate interpretation of instructions
• Language and non-verbal communication deficits
• Planning and organization deficits
• Poor insight into deficits
• Inability to generalize learning from one situation to another
• Memory problems and diminished cognitive flexibility

• Difficulty recognizing and repairing communication breakdowns
• Coming across as argumentative, stubborn, or belligerent
• Problems interpreting body language, social cues, jokes, and teasing
• Poor listening skills — may seem like they don't care what you say
• Passive, monotone, or slurred speech; trouble finding words
• Difficulty judging personal space
• Getting stuck on an aspect of conversation (repeated questions, arguments)
• Poor recognition of dangerous situations

• Communicating in a distracting environment
• Speaking too fast — or too slowly
• Finishing the person's sentences
• Giving too little — or too much — verbal information
• Personalizing inappropriate or aggressive language
• Showing frustration when the person forgets or fails to comply
• Not deciphering the underlying cause of unusual behavior

• Talk in direct, short phrases
• Allow delayed responses to questions or directions
• Provide clear, direct feedback regarding behavior
• Respond to undesirable behaviors with specific statements of expectations
• Avoid sarcasm, innuendo, and literal expressions
• Repeat questions or instructions in exactly the same way
• Remember that talking louder does not improve understanding
• Model calm body language — move slowly, keep hands down, use low vocal pitch
• Look and wait for response or eye contact
• Reinforce desired behavior immediately
• Provide environmental compensations to reduce stress
• Designate one person for interactions when possible

Utilize people who know the person well and understand their behavior patterns.

• Don't take inappropriate behavior personally — it's not about you
• At any given time, a person is doing the best they are capable of
• The very nature of brain injury creates disordered thinking
• Almost anyone would prefer to be viewed as BAD rather than DUMB
• There are two main functions of behavior: to obtain or escape something
• There is no single treatment approach — each person requires an individualized plan
• To manage behavior effectively, first understand the person's motivation

This article is provided courtesy of the Brain Injury Association of Virginia (BIAV) for informational and educational purposes only. The information is not intended as a substitute for professional medical or psychological advice, diagnosis, or treatment.

For more information about brain injury or services and resources, please contact BIAV at (800) 444-6443 or visit www.biav.net