How does impulsivity differ from hyperactivity in ADHD?

PostedAugust 26, 2025

UpdatedSeptember 5, 2025

ByMy Patient Advice

Author: Avery Lombardi, MSc | Reviewed by: Dr. Rebecca Fernandez, MBBS

In the world of ADHD traits, impulsivity vs hyperactivity often get mixed up. Though both are common symptoms of ADHD, they are distinct in their behaviours and impact on daily life. Understanding the difference between impulsivity and hyperactivity is key for better management and treatment of the disorder. So, how do they differ?

Impulsivity vs Hyperactivity: What’s the Difference?

While both impulsivity and hyperactivity are linked to ADHD, they manifest in different ways and affect behaviour in distinct areas.

Impulsivity in ADHD

Impulsivity refers to acting without thinking, often leading to snap decisions or emotional outbursts. It involves a lack of impulse control, resulting in behaviours such as interrupting others during conversations, making hasty decisions without considering the consequences, or engaging in risky actions. Impulsivity often affects decision-making and can lead to challenges in social and academic settings.

Hyperactivity in ADHD

On the other hand, hyperactivity is characterised by excessive movement or energy. It might look like fidgeting, an inability to sit still, or constant physical motion. Individuals with hyperactive traits often struggle to stay calm or quiet, especially in situations that require focus or stillness, such as class or meetings. Hyperactivity can be exhausting for both the individual and those around them.

Key Differences

While impulsivity is about acting without forethought, hyperactivity is more about excessive movement and energy. Impulsive behaviours tend to affect decision-making, while hyperactive traits affect physical activity levels.

In summary, impulsivity vs hyperactivity in ADHD are two separate yet interconnected symptoms. Both can be challenging but understanding their differences can help in better managing the ADHD traits associated with each.

Visit providers like ADHD Certify for personal consultations and expert guidance tailored to your unique situation.

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to Impulsivity in ADHD.

Avery Lombardi, MSc

Author

Avery Lombardi is a clinical psychologist with a Master’s in Clinical Psychology and a Bachelor’s in Psychology. She has professional experience in psychological assessment, evidence-based therapy, and research, working with both child and adult populations. Avery has provided clinical services in hospital, educational, and community settings, delivering interventions such as CBT, DBT, and tailored treatment plans for conditions including anxiety, depression, and developmental disorders. She has also contributed to research on self-stigma, self-esteem, and medication adherence in psychotic patients, and has created educational content on ADHD, treatment options, and daily coping strategies.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the author's privacy.

Dr. Rebecca Fernandez, MBBS

Reviewer

Dr. Rebecca Fernandez is a UK-trained physician with an MBBS and experience in general surgery, cardiology, internal medicine, gynecology, intensive care, and emergency medicine. She has managed critically ill patients, stabilised acute trauma cases, and provided comprehensive inpatient and outpatient care. In psychiatry, Dr. Fernandez has worked with psychotic, mood, anxiety, and substance use disorders, applying evidence-based approaches such as CBT, ACT, and mindfulness-based therapies. Her skills span patient assessment, treatment planning, and the integration of digital health solutions to support mental well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the reviewer's privacy.