Attention Deficit Hyperactivity Disorder (ADHD) is often misconceived as a disorder that fades with age, a misconception debunked by recent findings published in the Journal of Attention Disorders. The study found that ADHD symptoms not only persisted over a 15-year period but also were related to various aspects of life success, including relationships and career satisfaction.
ADHD is a psychiatric disorder characterized primarily by inattention, such as difficulty maintaining focus, and hyperactivity-impulsivity, such as restlessness or impulsive actions. Historically regarded as a childhood condition, extensive research now shows that ADHD often persists into adulthood, affecting about 1% to 3% of the global population.
Symptoms of hyperactivity tend to decrease from childhood to adolescence, while inattention often remains stable. This stability can lead to significant challenges in social interactions, academic and job performance, and emotional regulation.
Given the persistent nature of ADHD and its impact on life outcomes, the researchers aimed to further investigate how symptoms of inattention and hyperactivity-impulsivity evolve from young adulthood into early middle age and their consequent effects on life success. They also sought to explore potential gender differences in these outcomes.
“My personal interest in this research on ADHD comes from my experience with friends and colleagues who have ADHD,” said study author Colin Henning, a PhD student at Trent University and member of the Emotion and Health Research Lab.
“Their ADHD diagnoses didn’t disappear as they got older (contrary to what they were told as kids) and instead their symptoms continued to impact their lives in a multitude of ways. I wasn’t able to find a lot of previous research on the extent to which ADHD continues through adulthood, so I wanted to help fill this gap in knowledge to get answers for the people in my own life that experience ADHD symptoms.”
The study began with an initial sample of 320 post-secondary students who were assessed for symptoms of ADHD at the start of their university studies. During their first week of university classes, these students were asked to complete a comprehensive questionnaire package. This package included the Conners Adult ADHD Rating Scale (CAARS), which is widely recognized for its efficacy in evaluating the presence and severity of ADHD symptoms.
Approximately 15 years after their initial assessment, a subset of these individuals was contacted for a follow-up study. This follow-up aimed to reassess the ADHD symptoms and evaluate life success across several domains including relationship quality and career satisfaction. Additional demographic and life situation data were collected to provide context to the ADHD assessments and life success measures.
One of the key findings was the strong stability of ADHD symptoms over the 15-year period. Both inattention and hyperactivity-impulsivity symptoms were found to be remarkably consistent over time.
More importantly, the researchers found that the presence of ADHD symptoms, particularly inattention, during emerging adulthood was consistently associated with poorer outcomes in key areas of life success during early middle adulthood. This was especially true for men.
In the realm of relationships, the data revealed that inattention symptoms adversely affected relationship quality, with participants reporting lower overall satisfaction. This suggests that difficulties in maintaining focus and managing tasks can extend into personal interactions, potentially leading to conflicts or misunderstandings in long-term relationships.
Regarding career outcomes, the participants with higher inattention symptoms reported lower career satisfaction. This could be linked to the challenges that inattention presents in workplace settings, such as difficulty in completing tasks efficiently, managing time, or maintaining productivity, which are critical factors for career progression and satisfaction.
“For the average person reading about our research, the main takeaway is that ADHD symptoms don’t just go away as you get older without treatment,” Henning told PsyPost. “Our findings show this notion that children and young adults with ADHD ‘just grow out of it’ when they get older is really a myth. Instead, symptom largely continue throughout young adulthood and into midlife, with these symptoms still affect people in their relationships and workplaces.”
The impact of hyperactivity-impulsivity symptoms on life success outcomes, however, was less straightforward than that of inattention.
Unlike inattention, which consistently predicted lower career satisfaction, hyperactivity-impulsivity symptoms did not consistently correlate with negative career outcomes. The impact seemed to vary more significantly between individuals. In some cases, traits associated with hyperactivity-impulsivity, such as energy and action orientation, might contribute positively to certain job roles or industries that value dynamic and quick decision-making skills.
Similarly, while inattention clearly had a negative correlation with relationship satisfaction, hyperactivity-impulsivity did not show a uniform negative impact. Among men, the researchers found that hyperactivity-impulsivity symptoms had a significant association with relationship satisfaction.
“We were surprised to find that reports of more hyperactive and impulsive behaviour among young adults (ages 18 to 25 years old) actually predicted people have more satisfying relationships and jobs later in life when we controlled for current behavior,” Henning said. “This was the opposite of what we expected to find and what other research has found.”
“In our paper, we propose this may be connected to how young people form identities, through exploration. In other words, young people with more hyperactive and impulsive behaviours may engage in exploring more jobs and relationships than the average person and this may allow them to find a more satisfying romantic partner and job over time instead of sticking to a less satisfying partner or job. That is of course if these same hyperactive and impulsive behaviors don’t continue to cause problems later in life.”
While the study provides valuable insights, it has limitations, such as the reliance on self-reported data and the lack of external validation for ADHD diagnoses. The study also cannot confirm that ADHD symptoms directly cause negative impacts on life success. Future research could address these limitations by incorporating more objective measures and broader diagnostic assessments.
“A major caveat of this research is that we didn’t specifically study people who have a diagnosis of ADHD,” Henning noted. “We studied average Canadians who attended university. So we need to conduct more research to see if these findings are the same for people with a diagnosis of ADHD.”
“Our long-term goals for this research is to expand our understanding of ADHD across the whole lifespan,” the researcher added. “We currently know a lot about ADHD in children and young adults. But we want to study people in midlife and later in life to better understand how ADHD affects people through their entire lives and possibly how to manage these effects.”
The study, “Longitudinal Associations Between Symptoms of ADHD and Life Success: From Emerging Adulthood to Early Middle Adulthood,” was authored by Colin T. Henning, Laura J. Summerfeldt, and James D. A. Parker.
