In the video, Dr. Russell Barkley explains why he finds it unhelpful and inaccurate to classify symptoms according to one of three types of ADHD and how inattentive symptoms can be mistaken for sluggish cognitive tempo.

https://www.additudemag.com/types-of-adhd-sluggish-cognitive-tempo-video/?utm_source=eletter&utm_medium=email&utm_campaign=best_february_2019&utm_content=022219&goal=0_d9446392d6-0304ec41cd-293139369

https://www.youtube.com/watch?time_continue=12&v=JAUYZ7bnqCc