THE DIFFERENCE BETWEEN FEELING IMPAIRED AND BEING IMPAIRED

One of the most common concerns I hear during a neuropsychiatric evaluation is, "My memory isn't what it used to be," or "I just don't feel as sharp as I was before." Individuals may report difficulty concentrating, forgetting conversations, losing their train of thought, struggling to multitask, or feeling mentally fatigued throughout the day. These concerns are often frustrating, can affect confidence, and understandably raise questions about whether a cognitive impairment is present.

While these symptoms are important and should never be dismissed, one of the most common misconceptions is that cognitive symptoms and cognitive impairment are the same thing.

Symptoms tell us what an individual is experiencing. Cognitive impairment, on the other hand, refers to objective deficits that can be identified through clinical evaluation and standardized testing. The distinction is important because many factors can influence how a person feels cognitively, and those factors do not always reflect an underlying neurological injury or measurable cognitive decline.

For example, individuals coping with chronic pain often report difficulties with concentration and memory. Poor sleep can significantly affect attention, processing speed, and learning. Anxiety, depression, emotional stress, and even certain medications may contribute to a sense of mental fogginess or forgetfulness. These experiences are very real and can have a meaningful impact on daily functioning. However, the presence of symptoms alone does not answer the question that is often most relevant from both a clinical and medical-legal perspective: Is there objective evidence of cognitive impairment?

Cognitive testing provides an objective assessment of an individual's abilities across multiple areas of functioning, including attention, concentration, processing speed, learning, memory, executive functioning, language, and problem-solving. Rather than relying solely on self-report, testing allows us to evaluate what an individual is actually capable of doing under standardized conditions.

Perhaps even more importantly, cognitive testing helps us determine whether there has been a meaningful change from baseline functioning.

When evaluating allegations of cognitive decline, the question is often not simply whether someone demonstrates weaknesses on testing. The more important question is whether those findings represent a decline from the person's expected level of functioning before the injury or event in question.

Every individual enters an evaluation with a unique background. Educational level, occupational history, intellectual abilities, language proficiency, and lifelong cognitive strengths all influence performance. A test score that may be entirely expected for one individual could represent a significant decline for another.

For example, a successful executive, engineer, or business owner may continue to score within average ranges on cognitive testing yet still demonstrate evidence of decline when compared to their estimated premorbid abilities. Conversely, an individual with longstanding educational challenges may obtain lower scores that are entirely consistent with their historical level of functioning and unrelated to a recent injury.

For this reason, comprehensive neuropsychiatric evaluations do not focus solely on test scores in isolation. We also evaluate educational attainment, occupational achievements, medical history, academic performance, language background, and other factors that help estimate premorbid functioning. Specialized measures within the testing battery also assist in estimating an individual's expected baseline level of cognitive functioning.

This process allows us to place current performance into meaningful context. Rather than simply asking, "How did this person perform today?" we are asking, "How does this person perform today compared to what we would reasonably expect based on their history, background and estimated premorbid functioning?"

In medical-legal cases, questions regarding causation, apportionment, disability, and functional limitations frequently depend upon whether objective evidence supports a change in functioning. Symptoms alone cannot answer that question. Similarly, a single test score rarely tells the whole story. The value of cognitive testing lies in its ability to integrate objective findings with an individual's history and provide a more complete understanding of their functioning.

Another benefit of cognitive testing is that it helps identify strengths as well as weaknesses. Not every evaluation reveals impairment. In many cases, individuals discover that their cognitive abilities remain intact despite concerns about memory or concentration. This can be reassuring and may help direct attention toward other treatable contributors such as sleep disruption, chronic pain, emotional distress, or medication effects. In other cases, testing may identify genuine deficits that warrant treatment, accommodations, or further intervention.

Ultimately, an evaluation is not simply about determining whether symptoms exist. It is about understanding what those symptoms mean. By combining clinical history, behavioral observations, objective testing, and estimates of premorbid functioning, we can determine whether there is evidence of true cognitive impairment and, perhaps most importantly, whether there has been a meaningful change from baseline.

Patients' reported symptoms provide an important starting point. Cognitive testing helps us objectively assess capacity, quantify functioning, and place those symptoms into context. Together, they allow for more accurate diagnoses, more targeted treatment recommendations, and more reliable medical-legal opinions.