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The Oxford Cognitive Screen (OCS) was developed by researchers from the Oxford Cognitive Health CRF at the Cognitive Neuropsychology Centre

The OCS (Oxford Cognitive Screen) can be delivered at the bedside in acute stroke, is easy to administer and score and is inclusive for patients with aphasia and neglect. It returns a visual snapshot of a patient's cognitive profile which summarises performance across 5 cognitive domains.

In order to help us keep track of the spread of use of this cognitive screen, the test materials are being licensed for use through Oxford University Innovation The test materials' licensing agreement is free of charge for publicly funded clinical and research use, though charges will apply for use by commercial entities.

The Oxford Cognitive Screen should always be made available free of charge to patients.

Please find more specifics on how to administer OCS, including a demonstration video and information on different language versions of OCS on


Key Publications:

Demeyere N, Riddoch MJ, Slavkova ED, Bickerton W-L, & Humphreys GW. (2015). The Oxford Cognitive Screen (OCS): Validation of a stroke-specific short cognitive screening tool. Psychological Assessment, 27(3), 883–894.  

Demeyere N, Riddoch MJ, Slavkova ED, Jones K, Reckless I, Mathieson P, & Humphreys GW. (2016) Domain-specific versus generalized cognitive screening in acute stroke. Journal of Neurology263, 306–315. 


As an elaboration of the domain specific OCS, the OCS-Plus was developed by the late Prof Humphreys, with Dr Demeyere and Dr Duta. The OCS-Plus was conceived as a set of tablet based, finer grained tests to include measures of domain general cognitive functions, such as executive attention, working memory, constructional planning, and selective and sustained attention. 

The aim of OCS-Plus was to sensitively pick up on domain general impairments in healthy ageing, mild cognitive impairment and vascular dementia, without undue loading of language requirements. The OCS-Plus, is currently only available as a research tool, and has been validated, and normed with 200 participants.

The OCS-Plus has been translated and is currently used in a low-education, rural community in the HAALSI cohort,  under the lead of Prof Lisa Berkman (Epidemiology, University of Harvard), ...

A collaboration at LMU, Munich, has started with a German translation of OCS-Plus in a cohort of MCI patients (Ms Marleen Haupt and Dr Kathrin Finke).


Oxford COMPASS (COMPetency ASSessment) is a new planned project to provide cognitive screening specifically aligned to Mental Capacity Assessments.

Assessment of mental capacity is a critical aspect of clinical practice, particularly for neurological patients. It provides the crucial judgement on patients' ability to make informed decisions on a wide range of situations, from choosing treatment and discharge destination, to making financial decisions (e.g. selling a house), creating a power of attorney or making a will. Careful, well-informed capacity assessments are vital for ensuring the protection of peoples’ rights. In order to establish that a person lacks capacity, the law states that the person concerned must be unable to (i) understand information relevant to the decision, (ii) retain that information, (iii) use or weigh that information as part of the process of making the decision, or (iv) communicate the decision made.

In spite of clear legal guidance, mental capacity assessments are typically conducted in a short non-standardized interview and are highly variable in practice.  They often fail to align with legal standards of the MCA, are solely based on a subjective, qualitative interview and are poorly documented. 

We are therefore developing a standardised mental capacity assessment app, in line with legal standards, to improve the approach and documenting of this decision-making process, which has long-lasting and highly impactful consequences to patients’ rights to self-determination. This project brings together expertise in neuropsychological cognitive screening and in depth knowledge of mental capacity law with high level statistical methods and software engineering. 

The end goal is for this application (COMPASS, short for COMPetency ASSessment) to be brief (using adaptive testing methods), easy to use by health professionals and to provide them with a standardised and quantified graded mental capacity profile that will inform and guide situation specific capacity judgements.