WEST-E Special Education Practice Test

Which of the following is a potential cause of ADHD as identified by research?

1. Excessive screen time

2. Nutritional deficiencies

3. Exposure to toxins

4. Family size

The correct answer is: Exposure to toxins

Research has identified several factors that may contribute to the development of Attention Deficit Hyperactivity Disorder (ADHD), one of which is exposure to toxins. Specifically, certain environmental toxins, such as lead, have been linked to an increased risk of ADHD symptoms. Exposure to these substances, particularly during critical periods of brain development, can impact cognitive functions and behavior. By considering the biological and environmental factors that play a role in ADHD, it becomes evident why exposure to toxins is viewed as a significant potential cause. In contrast, while excessive screen time, nutritional deficiencies, and family size can influence a child's overall development and well-being, current research does not establish them as direct causes of ADHD to the same extent as exposure to toxins has been documented. Thus, focusing on environmental and neurobiological influences, like toxins, provides a clearer understanding of potential causes behind ADHD.