Summary: Researchers have identified a statistical measure they call the “d factor” that appears to capture a person’s overall tendency to be distracted. The d factor also shows meaningful associations with self-reported ADHD symptoms and with hyperfocus, an intense, prolonged form of concentration sometimes reported by people with ADHD.
In an analysis of responses from more than 1,200 adults, three distinct forms of distraction emerged—external distraction, unwanted intrusive thoughts, and mind-wandering. Those three dimensions were strongly interrelated and could be explained largely by a single higher-order construct, the d factor, which may reflect a general distractibility trait that varies across individuals.
Key Facts:
- The d factor is a higher-order construct that combines three core distraction types: external distraction, intrusive thoughts, and mind-wandering.
- The d factor is strongly associated with self-reported ADHD symptoms and also correlates with hyperfocus, suggesting complex links between distractibility and states of intense concentration.
- People who score high on the d factor tend to be more easily distracted across a range of everyday contexts, pointing to a possible general distractibility trait.
Source: PLOS
Overview of the study and findings
Han Zhang of the University of Michigan, Ann Arbor, and colleagues published their findings in the open-access journal PLOS ONE on October 25, 2023. The research asked whether a general disposition toward distraction can be rigorously measured and how such a disposition relates to ADHD symptomatology and hyperfocus.
Prior research has documented many different forms of distraction, including external sensory interruptions, repetitive negative or intrusive thoughts, and spontaneous mind-wandering or daydreaming. While several studies have suggested that vulnerability to various distraction types might be united by a common factor, empirical evidence had been limited and often omitted distraction types relevant to ADHD.
To build a more comprehensive picture, Zhang and colleagues administered an extensive battery of questionnaires to 1,220 adult participants. The instruments measured real-world distractibility across contexts such as difficulty concentrating with background television, susceptibility to intrusive thoughts, and tendencies to lose oneself in daydreams. The battery also included assessments of ADHD symptoms and of hyperfocus.
Using latent variable modeling, the researchers found three correlated but distinct factors that accounted for the data: external distraction, unwanted intrusive thoughts, and mind-wandering. Crucially, about 80% of the variance in these three factors could be explained by a single higher-order factor—the d factor—interpreted as a general distractibility trait. This higher-order model replicated across two separate samples, supporting its reliability.
Further analyses revealed robust statistical associations between the d factor and self-reported ADHD symptoms. The d factor also correlated positively with hyperfocus, indicating that experiences of intense, prolonged concentration may coexist with, or even arise from, underlying attention regulation difficulties. In other words, hyperfocus may not be purely a strength but may reflect a particular pattern of attentional control that relates to broader distractibility.
The authors emphasize that these results advance our understanding of individual differences in distractibility and how those differences relate to ADHD-related experiences. They also caution that additional research is needed to refine the d factor concept, examine its causal mechanisms, and validate it using complementary methods such as behavioral tasks, experimental measures, and longitudinal designs.
The study suggests a useful framework for future research and clinical evaluation: rather than treating distraction as many unrelated symptoms, a unified distractibility trait could help explain why some people are consistently more prone to distraction across contexts and why distractibility often accompanies ADHD symptoms.
About this ADHD news
Author: Hanna Abdallah
Source: PLOS
Contact: Hanna Abdallah – PLOS
Image: The image is credited to Neuroscience News
Original Research: Open access. “A d factor? Understanding trait distractibility and its relationships with ADHD symptomatology and hyperfocus” by Han Zhang et al., PLOS ONE (October 25, 2023).
Abstract
A d factor? Understanding trait distractibility and its relationships with ADHD symptomatology and hyperfocus
People differ widely in how vulnerable they are to distraction. Distraction can arise from many sources—external sensory stimuli, intrusive negative thoughts, or spontaneous mind-wandering—so characterizing individual differences is challenging. In this study, two samples of adults (combined N = 1,220) completed an extensive questionnaire battery assessing multiple facets of real-world distractibility.
Latent modeling identified three correlated yet distinct factors—external distraction, unwanted intrusive thoughts, and mind-wandering—and demonstrated that roughly 80% of the variance across these factors could be captured by a single higher-order factor (d) that represents general distractibility. This general distractibility model replicated across the two samples.
Applying the model to ADHD symptomatology and hyperfocus, the authors found substantial associations between d and self-reported ADHD symptoms, and a positive relationship between d and hyperfocus. These findings suggest that hyperfocus may, in part, reflect attention regulation difficulties rather than only an ability to concentrate.
Overall, the study offers a step toward a unified framework for understanding individual differences in distractibility and their links to ADHD-related constructs, while highlighting the need for further multimethod research.