Which developmental disorder is characterized by poor ability to focus, hyperactivity, and impulsiveness?

Attention-deficit hyperactivity disorder (ADHD) is characterized by a range of symptoms that significantly impact an individual's ability to function effectively in daily life. The core features of ADHD include difficulties with maintaining attention (poor ability to focus), hyperactivity (excessive movement and difficulty remaining still), and impulsiveness (acting without considering consequences).

These symptoms often manifest in various settings, such as at home or in school, and can lead to challenges in academic performance and social relationships. The diagnosis of ADHD typically requires a comprehensive assessment, considering the frequency and duration of these behaviors and their impact on development and functioning.

In contrast, autism spectrum disorder primarily involves challenges in social communication and repetitive behaviors, without the focus on attention regulation and hyperactivity typical of ADHD. Oppositional defiant disorder involves a pattern of angry, irritable mood, argumentative behavior, and vindictiveness, which is distinct from the attentional and hyperactive features of ADHD. Learning disabilities refer to specific difficulties in processing and understanding information, which does not necessarily include hyperactivity or impulsiveness. Hence, ADHD is the correct choice for this set of symptoms.