In Hong Kong and most Chinese-speaking cities worldwide, the most widely used instruments for cognitive screening in stroke patients traditionally are the Mini Mental State Examination (MMSE) and the Montreal Cognitive Assessment (MoCA). Since these tools were developed geared to evaluating individuals with dementia (MMSE) or mild cognitive impairment (MoCA), they lack specificity and sensitivity in identifying common deficits after stroke, such as aphasia, spatial neglect, apraxia, and reading/writing problems (see also Demeyere et al, 2016).

The Cantonese OCS, following the footprint of the original OCS in English, has been designed for the evaluation of stroke patients. It is a clinically-oriented screener that is easy and quick to administer and score. The Cantonese OCS has been shown to be suitable for testing patients in the acute phase at bedside as well as chronic patients.


The Cantonese OCS was established by an international team led by Dr. Anthony Pak-Hin Kong (Associate Professor, Department of Communication Sciences and Disorders, University of Central Florida, USA).

Other key team members include:

  • Prof. Brendan Weekes (Chair Professor, Division of Speech and Hearing Sciences, University of Hong Kong, Hong Kong)
  • Dr. Diana Wai-Lam Ho (Clinical Associate of the Speech Therapy Unit, Department of Chinese and Bilingual Studies, Hong Kong Polytechnic University)
  • Dr. Johnny King-Lam Lau (Postdoctoral Research Fellow, School of Psychology and Clinical Language Sciences, University of Reading, UK)


The demonstration video will be added.

Ongoing Research

  • Language recovery in a bilingual Cantonese-English speaker with aphasia
  • Measuring treatment outcome of technology-based aphasia intervention


Kong AP-H, Lam PH-P, Ho DW-L, Lau JK, Humphreys GW, Riddoch MJ, & Weekes B (2016). The Hong Kong version of the Oxford Cognitive Screen (HK-OCS): validation study for Cantonese-speaking chronic stroke survivors. Aging, Neuropsychology, and Cognition, 23(5), 530–548.

Kong, A.P.H., Chan, J., Lau, J.K.L., Bickerton, W.L., Weekes, B., & Humphreys, G. (2018). Developing a Cantonese version of Birmingham Cognitive Screen for stroke survivors in Hong Kong. Communication Disorders Quarterly, 39(3), 387-401. doi: 10.1177/1525740117720382

Lam P, Kong AP-H, Ho D, Humphreys G, & Weekes B. (2014). Cantonese version of the Oxford Cognitive Screen (OCS): Validation for stroke survivors in Hong Kong. Frontiers in Psychology. doi: 10.3389/conf.fpsyg.2014.64.00005

Pan X, Chen H, Bickerton WL, Lau JK-L, Kong AP-H, Rotshtein P, Guo A, Hu J, & Humphreys GW (2015). Preliminary findings on the reliability and validity of the Cantonese Birmingham Cognitive Screen in patients with acute ischemic stroke. Neuropsychiatric Disease and Treatment, 2015(11), 2377-2390.