What is a Clinical Psychologist? | Dr Derek Mitchell, Aberdeen

Training, approach & practice

What is a Clinical Psychologist?

An overview of clinical psychology — the training involved, the methods used, and what working with a clinical psychologist typically looks like.

Training & qualification

How clinical psychologists are trained

The title ‘Clinical Psychologist’ is protected by law in the UK. To use it, a practitioner must hold an undergraduate psychology degree accredited by the British Psychological Society (BPS) — three years in England and Wales, four in Scotland — followed by a Doctorate in Clinical Psychology (DClinPsy), a further three years of intensive combined academic study, research, and supervised clinical placements across NHS settings.

In total, this represents six to seven years of university-level training. Entry to doctoral programmes is highly competitive, and those who qualify are registered with the Health and Care Professions Council (HCPC), which sets and enforces standards of training, conduct, and ongoing practice.

After qualification, clinical psychologists typically continue to develop through further training in specialist areas, regular clinical supervision, and engagement with the research literature throughout their careers.

What the doctorate involves

The DClinPsy programme combines advanced academic training with supervised clinical placements across NHS settings, typically including adult mental health, child and adolescent services, older adult services, and other specialist areas such as neuropsychology. Trainees develop expertise in psychological assessment, formulation, and evidence-based treatment across the lifespan. The programme culminates in an independently conducted research thesis examined by viva voce — ensuring that qualified clinical psychologists are equipped not just to apply evidence, but to critically evaluate it.

The core clinical skill

Psychological formulation: understanding your difficulties

A central part of clinical psychology practice is psychological formulation — a carefully developed, evidence-based account of why a particular person is experiencing a particular problem at a particular time.

Formulation is not the same as diagnosis. Where a diagnosis describes a pattern of symptoms, formulation explores the deeper question: why is this person struggling in this way? It draws on your history, your relationships, your beliefs about yourself and the world, and the contexts in which difficulties arose and are maintained.

A good formulation becomes the foundation for a treatment plan that is genuinely tailored to you — not a standard protocol applied regardless of the individual. It also gives you a clearer way of understanding your own experience, which many people find valuable in itself.

Clinical psychologists are trained to draw on a range of theoretical frameworks and to select whichever best fits the person in front of them:

Cognitive Behavioural Models

How thoughts, feelings, and behaviours interact to maintain difficulties

Attachment Theory

How early relational experiences shape adult patterns of connection and distress

Behavioural Models

The role of avoidance, reinforcement, and conditioning in sustaining problems

Schema & Developmental Models

How core beliefs formed early in life influence current experience

Acceptance & Contextual Models

The relationship between psychological flexibility, values, and wellbeing

Trauma-Informed Frameworks

Understanding how traumatic experience shapes physiology, memory, and selfhood

Science and practice

The scientist-practitioner model

Clinical psychologists are trained as scientist-practitioners. This means the work is grounded in research evidence — and equally, that they are equipped to read that evidence critically, understand its limits, and apply it thoughtfully to the real complexity of individual people.

The evidence base for psychological treatments is extensive and continues to grow, but research is conducted on populations. A clinical psychologist brings both familiarity with that evidence and the clinical judgement to understand how — and when — it applies to a specific person.

Treatment is not fixed. A clinical psychologist monitors how things are progressing, revisits the formulation when new information emerges, and adjusts their approach accordingly. The aim throughout is to work collaboratively with you toward change that is meaningful and lasting.

Request an initial consultation

Take the first step

Ready to take the next step?

An initial consultation is an opportunity to talk through what’s bringing you here and to explore whether working together feels like the right fit — with no obligation to proceed further.

Request a consultation