In order to deal with Attention Deficit Hyperactivity Disorder (ADHD), reducing the time allotted to complete an assignment to coincide with the individual's attention span and gradually increasing this time can be an effective strategy. Here is a detailed explanation of why this approach is best suited for ADHD:

1. Understanding ADHD:
ADHD is a neurodevelopmental disorder that affects both children and adults. It is characterized by symptoms of inattention, hyperactivity, and impulsivity. Individuals with ADHD often struggle with maintaining focus and attention for extended periods of time.

2. Time Management:
One of the key challenges faced by individuals with ADHD is managing time effectively. They may have difficulty estimating the amount of time needed to complete tasks, leading to procrastination or rushing through assignments. By reducing the time allotted to complete an assignment, it becomes more manageable and aligns better with their attention span.

3. Coinciding with Attention Span:
People with ADHD typically have a shorter attention span compared to neurotypical individuals. Their ability to sustain focus and concentration may be limited, especially when faced with lengthy tasks or assignments. By adjusting the time allotted to match their attention span, it becomes easier for them to stay engaged and complete the task without becoming overwhelmed or distracted.

4. Phased Approach:
Increasing the time allotted to complete an assignment in a phased manner can help individuals with ADHD gradually build their attention span and improve their time management skills. Starting with shorter time frames and gradually extending them allows for a gradual adaptation and reduces the risk of overwhelming the individual.

5. Enhanced Focus and Productivity:
By aligning the time allotted with the individual's attention span, it becomes easier for them to maintain focus and productivity. They are more likely to complete the assignment within the given time frame and experience a sense of accomplishment. This can also boost their self-esteem and motivation.

In conclusion, reducing the time allotted to complete an assignment to coincide with the individual's attention span and gradually increasing it in a phased manner is best suited for dealing with Attention Deficit Hyperactivity Disorder (ADHD). This approach helps individuals with ADHD manage their time effectively, align tasks with their attention span, and improve their focus and productivity.