Staff Directory

Dr Keong Yap Name: Dr Keong Yap
Associate Professor (Psychology)
+612 9701 4574
+612 9746 3059
Organisational Area
Faculty of Health Sciences
School of Behavioural and Health Sciences (NSW)
Building 640 - Edward Clancy Building(167-169 Albert Road, Strathfield NSW 2135)-Ground-RoomG.04
Biographical Information

I am the National Course Coordinator for postgraduate psychology programs at the School of Behavioural and Health Sciences. I joined ACU in 2015 to assist in setting up the Master of Psychology (clinical) course in the Strathfield campus.  I graduated in 2002 from the University of Melbourne with a Doctor of Psychology majoring in clinical psychology. I am a registered psychologist with clinical endorsement and a PsyBA accredited supervisor.  

My research interests are in the area of clinical psychology and my current focus is on gaining a better understanding of obsessive-compulsive disorder and hoarding disorder. I am also very interested in examining the application of mindfulness and acceptance based therapies (e.g., acceptance and commitment therapy) for these conditions. 
For further details:

Please also visit the ACU Strathfield Clinical Psychology Research Lab


Recent peer-reviewed publications

Ciarrochi, J., Hayes, S. C., Hayes, L., Sahdra, B., Ferrari, M., Yap, K. & Hofmann, S. (2022). From Package to Process: An Evidence-based Approach to Processes of Change in Psychotherapy. In G. J. G. Asmundson. (Ed.). Comprehensive Clinical Psychology (2nd. Edition), pp 26-44. Elsevier.

Arrow, K., Yap, K., & Chester, A. (2021). Group Climate in Online Group Cognitive Behaviour Therapy predicts Treatment Outcomes. Clinical Psychologist, 25(2), 153-163.

Australian Postgraduate Psychology Simulation Education Working Group (2021). A new reality: The      role of simulated learning activities in postgraduate psychology training programs. Frontiers   in Education, 6. Article 653269.

Kings, C., Moulding, R., Yap, K., Gazzola, R., & Knight, T. (2021). Measuring Possessions as Extensions of Self and Links to Significant Others in Hoarding: The Possessions as Others and Self  Inventory. Journal of Psychopathology and Behavioral Assessment, 43, 441-453.

Scott, J., Yap, K., Bunch, K., Haarhoff, B., Perry, H., Bennett-Levy, J. (2021). Should personal practice be part of cognitive behaviour therapy training? Results from two self-practice/self-reflection  (SP/SR) cohort control studies. Clinical Psychology & Psychotherapy. 28(1), 150-158   

Yap, K. & Grisham, J. R. (2021). Object Attachment in hoarding disorder and its role in a   compensatory process. Current Opinion in Psychology. 39, 76-81.

Yap, K., Sheen, J., Nedeljkovic, M., Milne, L., Lawrence, K., & Hay, M. (2021). Assessing clinical competencies using the Objective Structured Clinical Examination (OSCE) in psychology   training. Clinical Psychologist, 25(3), 260-270.

Ciarrochi, J., Sahdra, B. K., Yap, K. & Dicke, T. (2020). The Role of Nonattachment in the   Development of adolescent mental health: a three-year longitudinal study. Mindfulness 11,  2131&ndash2139.

Cooper, D., Yap, K., O&rsquoBrien, M., & Scott, I. (2020). Mindfulness and Empathy Among Counseling and Psychotherapy Professionals: A Systematic Review and Meta-analysis. Mindfulness, 11,   2243&ndash2257.

Eppingstall, J., Xenos, S., & Yap, K. (2020) Acceptance and commitment therapy for hoarding disorder: A proposed treatment protocol for individuals. Australian Psychologist.

Frei, J. M., Sazhin, V., Fick, M., & Yap, K. (2020). Emotion-oriented coping style predicts self-harm           in response to acute psychiatric hospitalization. Crisis - The Journal of Crisis Intervention and  Suicide Prevention. 42, 3.

Yap, K. & Grisham, J. R. (2020). Object attachment and emotions in hoarding disorder.     Comprehensive Psychiatry, 100, 152179.

Yap, K., Eppingstall, J., Brennan, C., Le, B., & Grisham, J. R. (2020). Emotional attachment to objects mediates the relationship between loneliness and hoarding symptoms, 24, 100487, doi: 10.1016/j.jocrd.2019.100487

Yap, K., & Grisham, J. R. (2019). Unpacking the construct of emotional attachment to objects and its association with hoarding symptoms.  Journal of Behavioral Addictions, 8(2), 249-258. doi: 0.1556/2006.8.2019.15

Linardon, J., Gleeson, J., Yap, K., Murphy, K., & Brennan, L. (2019). Meta-analysis of the effects of third-wave behavioural interventions on disordered eating and body image concerns: Implications for eating disorder prevention. Cognitive Behaviour Therapy, 48(1), 15-38.

Frost, R. O., Gabrielson, I., Deady, S., Dernbach, K. B., Guevara, G., Peeeles-Dorin, M., Yap, K., & Grisham, J. R. (2018). Scrupulosity and hoarding. Comprehensive Psychiatry, 86, 19-24. doi10.1016/j.comppsych.2018.06.011

Ferrari, M., Yap, K., Scott, N., Einstein, D., & Ciarrochi, J. (2018). Self-compassion moderates the perfectionism and depression link in both adolescence and adulthood.  PLos ONE, 13(2), e0192022. doi: 10.1371/journal.pone.0192022

Cooper, D., Yap, K., & Batalha, L. (2018) Mindfulness-Based Interventions and Their Effects on Emotional Clarity: A systematic Review and Meta-AnalysisJournal of Affective Disorders, 235, 265-276. doi: 10.1016/j.jad.2018.04.018

Kyrios, M., Mogan, C., Moulding, R.,Frost, R. O.,  Yap, K., &  Fassnacht, D. B. (2018). The cognitive-behavioral model of Hoarding Disorder: Evidence from clinical and non-clinical cohorts. Clinical Psychology and Psychotherapy. 25(2), 311-321. doi10.1002/cpp.2164

Yap K, Mogan C, Moriarty A, Dowling, N., Blair-West, S., Gelgec, C., & Moulding, R. (2018). Emotion regulation difficulties in obsessive-compulsive disorderJournal of Clinical Psychology. 74(4), 695-709. doi10.1002/jclp.22553 

Pinto, R. A., Kienhuis, M., Slevison, M., Chester, A., Sloss, A. and Yap, K. (2017). The effectiveness of an outpatient Acceptance and Commitment Therapy Group programme for a transdiagnostic population. Clinical Psychologist, 21(1), 33-43. doi: 10.1111/cp.12057

Yap, K., Gibbs, A. L., Francis, A. J. P., Schuster, S. E. (2016). Testing the bivalent fear of evaluation model of social anxiety: The relationship between fear of positive evaluation, social anxiety, and perfectionism. Cognitive Behaviour Therapy, 45(2):136-49. doi: 10.1080/16506073.2015.1125941

Bablas, V., Yap, K., Cunnington, D., Swieca, D., & Greenwood, K. M. (2016). Mindfulness-Based Stress Reduction for Restless Legs Syndrome: A Proof of Concept Trial. Mindfulness. doi: 10.1007/s12671-015-0457-9

Dowling, N., Thomas, N., Blair-West, S., Bousman, C., Yap, K., Smith, D. J., & Ng, C. H. (2016). Intensive residential treatment for obsessive-compulsive disorder: Outcomes and predictors of patient adherence to cognitive-behavioural therapy. Journal of Obsessive-Compulsive and Related Disorders, 9, 82-89. doi:10.1016/j.jocrd.2016.04.006

Scott, J., Yap, K., Francis, A. J., & Schuster, S. (2014). Perfectionism and its Relationship with Anticipatory Processing in Social Anxiety. Australian Journal of Psychology, 66(3), 187-196. doi: 10.1111/ajpy.12045

Potter, R., Yap, K., Francis, A. J., & Schuster, S. (2014). Self-compassion mediates the relationship between parental criticism and social anxiety. International Journal of Psychology and Psychological Therapy,14(1), 33-43.

Alemis, M. C., & Yap, K. (2013). The role of negative urgency impulsivity and financial management practices in compulsive buying. Australian Journal of Psychology, 65 (4), 224-231. doi: 10.1111/ajpy.12025.

Robertson, B., Yap, K., Schuster, S. (2013). Effectiveness of an alarm intervention with overlearning for primary nocturnal enuresis. Journal of Pediatric Urology, 10(2), 241-245. doi:10.1016/j.jpurol.2013.08.008/

Chen, E. Z., Dowling, N. A., & Yap, K. (2012). An examination of gambling behaviour in relation to financial management behaviour, financial attitudes, and money attitudes. International Journal of Mental Health Addiction, 10(2), 231-242. doi: 10.1007/s11469-011-9311-z.

Mogan, C., Kyrios, M., Yap, K., Schweitzer, I. & Moulding, R. (2012). Phenomenology of Hoarding - What is hoarded by individuals with Hoarding Disorder? Journal of Obsessive-Compulsive and Related Disorders, 1(4), 306-311.

Pham, T., Yap, K., & Dowling, N. A. (2012). The impact of financial management practices and financial attitudes on the relationship between materialism and compulsive buying. Journal of Economic Psychology, 33, 461-470. doi: 10.1016/j.joep.2011.12.007.

Yap, K., Bearman, M., Thomas, N., & Hays, M. (2012). Clinical psychology students&rsquo experiences of a pilot objective structured clinical examination (OSCE). Australian Psychologist, 47(3), 165&ndash173. doi: 10.1111/j.1742-9544.2012.00078.x

Yap, K., Mogan, C. M., & Kyrios, M. (2012). Obsessive-compulsive disorder and comorbid depression: the role of OCD-related and non-specific factors. Journal of Anxiety Disorders, 26, 565-573. doi: 10.1016/j.janxdis.2012.03.002.

For an up to date list of publications, please see:



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