How Psychologists Assess ADHD: Tools, Tests, and Techniques Explained
- Calder Psychology
- Apr 10
- 3 min read

Living with ADHD can make everyday tasks challenging. Children might struggle to sit still in class, adolescents can find it hard to organise schoolwork, and adults may face difficulties juggling work, family, and daily responsibilities.
At Calder Psychology, we understand these challenges and provide ADHD assessment in Perth designed to give clarity, support, and practical strategies for thriving in daily life. Our assessments are tailored to each individual and delivered with care, compassion, and evidence-based methods.
What is an ADHD Assessment?
ADHD, or Attention-Deficit/Hyperactivity Disorder, is a neurodevelopmental condition that affects focus, organisation, behaviour, and emotional regulation. It can look very different depending on age, personality, and life circumstances. For some, it may show as restlessness and impulsivity, while for others, difficulties with planning, time management, or emotional regulation may be more obvious.
An ADHD assessment is designed to identify whether these challenges are linked to ADHD or another underlying condition. Through the assessment, individuals gain insight into their cognitive profile, receive practical recommendations, and can access support to improve focus, organisation, and overall wellbeing. Common challenges prompting an assessment include trouble staying on task, forgetfulness, impulsivity, and emotional difficulties like frustration or low self-esteem.
Why Choose Calder Psychology for ADHD Assessments
We at Calder Psychology are trusted by doctors, patients, NDIS providers, and insurers across Perth for our professional and compassionate approach. Our ADHD assessments are designed to be thorough, personalised, and supportive. Here’s why clients choose us:
Comprehensive process: We use interviews, standardised questionnaires, and cognitive and behavioural testing to get a full picture.
Experienced clinicians: Our psychologists are trained in ADHD diagnosis and evidence-based interventions.
Tailored feedback: Every client receives a detailed report with personalised recommendations for school, work, or therapy.
Accessible services: We offer in-person appointments and secure telehealth consultations for convenience.
Supportive care From your first call to post-assessment guidance, we provide warmth, respect, and professional support.
Who Can Benefit from an ADHD Assessment

Children and Adolescents
Children and teens may show signs like difficulty concentrating in class, restlessness, trouble following instructions, or behavioural challenges that affect learning and friendships. Early assessment can help them access the right support at school and at home.
Adults
Adults may face chronic disorganisation, poor time management, difficulty maintaining focus, restlessness, or impulsive decisions at work or in daily life. Understanding ADHD can open the door to strategies that improve productivity, relationships, and wellbeing.
Parents and Families
Parents seeking to understand their child’s behaviour can benefit from a structured ADHD assessment. Identifying ADHD or other underlying challenges can improve family communication, reduce conflict, and guide support strategies.
ADHD looks different at each stage of life, so assessments are tailored to the individual, ensuring relevant recommendations and practical support.
Tools, Tests, and Techniques Used in ADHD Assessments
At Calder Psychology, we follow a clear, structured process to ensure accurate and meaningful results:
Step 1: Initial Consultation
We discuss your history, current challenges, and goals to understand your unique situation.
Step 2: Formal Testing
Cognitive and behavioural assessments are conducted using validated, research-backed tools to evaluate attention, executive function, and emotional regulation.
Step 3: Scoring and Analysis
All data is carefully reviewed to ensure accuracy and reliability.
Step 4: Feedback Session
We discuss the results and provide practical recommendations for managing ADHD in daily life.
Step 5: Comprehensive Report
Clients receive a detailed written summary with actionable steps for school, work, or therapy.
Common tools include structured interviews, questionnaires, cognitive tests, and behavioural observation. Using evidence-based and standardised methods ensures every assessment provides accurate, actionable insights.
How to Prepare for an ADHD Assessment
Preparation helps make your assessment more effective. Before your appointment, you will receive a short Intake Form. You may also bring:
Relevant reports such as school, occupational, psychological, or medical documentation.
A list of current medications and previous treatment history.
Notes or examples of behaviours or challenges you’ve observed.
Completed questionnaires from parents, teachers, or other significant individuals if requested.
Being prepared ensures your assessment is accurate and that recommendations are practical and relevant to your life.
Take the First Step: Assessment for ADHD in Perth, WA
Taking the first step towards understanding ADHD can feel daunting, but it is also empowering. At Calder Psychology, we provide compassionate, evidence-based, and tailored ADHD assessments in Perth, WA. Our goal is to help children, adolescents, adults, and families gain clarity, confidence, and practical strategies to live better every day.
Book your ADHD assessment today by calling 0401 797 097 or visiting Calder Psychology ADHD Assessment. Our team is here to guide you every step of the way.




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