The words "screening," "assessment," "testing" and "evaluation" get used interchangeably, but they are not the same thing. Understanding the difference helps you know what you are getting and what to ask for.
What a screening is
A screening is a brief tool, often a rating scale or questionnaire, designed to flag whether a concern is worth looking at more closely. Screenings are quick, inexpensive and useful as a first step in a pediatrician's office, a school or a therapist's practice. They are also, by design, limited: a screening can suggest that attention symptoms are present, but it cannot explain why, rule out other causes, or describe how a person learns and functions.
What a comprehensive evaluation is
A comprehensive psychological evaluation combines several sources of information:
- A clinical interview covering developmental, medical, school or work, and family history
- Standardized rating scales from multiple people who know the person in different settings
- Direct, standardized testing of cognitive abilities, attention, memory, processing speed and academic skills
- Emotional, behavioral and adaptive measures, because anxiety, mood, sleep and learning differences can all look like attention problems
- Clinical observation and judgment, integrating everything above into a written report
The evaluation does not only ask whether ADHD criteria are met. It asks what best explains the pattern, what else is going on, and what will actually help.
When a screening is enough, and when it is not
A screening is a reasonable place to start when a concern is new and mild. A comprehensive evaluation is usually the better choice when:
- Concerns are affecting school, work, relationships or self-esteem
- More than one explanation is plausible (attention, anxiety, learning, sleep)
- Documentation is needed for school accommodations, college disability services or workplace supports
- A prior screening was positive and the next step is unclear
- Treatment has started but is not working as expected
Why it matters. Two people can score identically on a screening questionnaire and have very different reasons for their difficulties. Recommendations built on a full picture fit better than recommendations built on a checklist.
How Amlea's evaluation is structured
At Amlea, every evaluation follows the same deliberate sequence: clinical interview, standardized testing, a built-in break, a 30-minute fNIRS session and integrated feedback. The fNIRS layer adds context about engagement and regulation while a person works; it does not diagnose anything on its own. Read about ADHD testing at Amlea.