Current Graduate Students
Aaron Philipp-Muller
Doctoral Student, Clinical Psychology
University of Regina
Aaron completed his B.Sc. in Psychology at the University of Toronto and his M.Sc. in Neuroscience at Queen's University, where he conducted a randomized control trial combining ketamine and ICBT for the treatment of Posttraumatic Stress Disorder. For his doctoral thesis under the supervision of Dr. Hadjistavropoulos, Aaron has been studying methods for personalizing ICBT in clients with chronic health conditions, including identifying beneficial ICBT therapist behaviours as well as predicting influences on client satisfaction, engagement, and outcomes during treatment. Aaron's research interests centre on treatment accessibility and engagement with ICBT, particularly within the context of rehabilitation and health psychology.
Awards and Distinctions
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2024: Faculty of Graduate Studies Travel Award, University of Regina
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2022 - 2024: UR Scholars Entrance Scholarship, University of Regina
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2021: Usona Institute Graduate Scholarship, Usona Institute
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2021: Latham Family Scholarship, Queen's University
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2021: Franklin Bracken Fellowship, Queen's University
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2020 - 2022: Department of Psychiatry Major Project Grant, Queen's University
Alayna Gretton
Doctoral Student, Clinical Psychology
University of Regina
Email | Alayna.Gretton@uregina.ca
Alayna completed a B.A. (Hons.) in Psychology at the University of Victoria and an M.Sc. in Clinical Psychology at the University of Regina. Her MS.c. research focused on understanding the experiences and effectiveness of ICBT for patients experiencing suicidal thoughts and behaviours. Alayna is also comprehensively trained in Dialectical Behaviour Therapy (DBT) and founded, led, and evaluated an online DBT program for individuals with borderline personality disorder (BPD) with the BPD Society of BC. Alayna has presented scholarly contributions at scientific conferences in Canada, the USA, and Europe. Her current work focuses on evaluating and optimizing internet-delivered Cognitive Behavioural Therapy for loneliness and developing online family psychoeducation interventions.
​Awards and Distinctions
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​2024: Faculty of Graduate Studies Travel Award, University of Regina
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2024: Saskatchewan Centre for Patient-Oriented Research (SCPOR) Student Traineeship Award, SCPOR and University of Regina
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2020: Edythe Hembroff-Schleicher Scholarship (2020), University of Regina
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2020: University Challenge Scholarship, University of Regina
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2019: Robert and Norah Wallace Commemorative Scholarship


Brandon Bourdeau D'Hui
Master's Student, Clinical Psychology
University of Regina
Brandon is an upcoming M.Sc. Clinical Psychology student at the University of Regina. Prior to attending the UofR, Brandon received his B.A. (Honours) in Psychology from Brandon University. His thesis examined why people may continue to use social media even if it is potentially harming them, exploring which aspects of harm can predict an individual’s belief in being harmed and the role of mindfulness in that relationship.
Saba Salimuddin M.Sc.
Doctoral Student, Clinical Psychology
University of Regina
Saba completed her B.Sc. (Hons) in Psychology with Management at Heriot-Watt University in Dubai, UAE, and her M.Sc. in Clinical Psychology at UofR. For her master’s thesis, Saba examined recognition of and treatment recommendations for somatic and cognitive-affective presentations of depression and anxiety in the general population. Saba’s doctoral dissertation is focused on new and expecting birthing parents' engagement with client stories in ICBT. Saba’s research interests focus on factors influencing treatment perceptions, uptake, and engagement.
Awards and Distinctions
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2025, 2023: John Spencer Middleton and Jack Spencer Gordon Middleton Scholarship
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2024, 2023: Faculty of Graduate Studies and Research Scholarly Award, University of Regina
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2024, 2023, 2022: Saskatchewan Innovation and Excellence Graduate Scholarship
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2023: Psychology Association of Saskatchewan Student Academic Achievement Scholarship
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2019: Deputy Principal’s Award for Academic Achievement, Heriot-Watt University
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2017: Provost’s Award for Academic Achievement, Heriot-Watt University

Caeleigh Landry M.Sc.
PhD Student, Clinical Psychology
University of Regina
Caeleigh received a Bachelor of Arts (Honours) in Psychology in 2019 and a Master of Science in Clinical Psychology in 2022, both from the University of Regina. Her master’s thesis, under the supervision of Drs. Nicholas Carleton and Heather Hadjistavropoulos, focused on the efficacy of internet-delivered mindfulness-based protocols for Public Safety Personnel. Caeleigh is in the process of completing her doctoral studies in clinical psychology at the University of Regina. For her doctoral dissertation, she is conducting a factorial study to examine the impact of different resource presentations and differing levels of ICBT course structure on outcomes in ICBT for public safety personnel. Caeleigh’s primary field of interest is the prevention and treatment of mental disorder symptoms in public safety personnel.
Alexa Danyluk B.Sc. (Hons.)
Master's Student, Clinical Psychology
University of Regina
Alexa completed her B.Sc. (Hons) in Psychology at the University of Victoria and is currently a master’s student in the Clinical Psychology Program at the University of Regina. Her master’s thesis explores the relationship between dispositional mindfulness and coping flexibility. Her research interests lie at the intersection of the social world, behaviour, and wellbeing. Specifically, she is interested in promoting social and behavioural protective mechanisms to offset psychological vulnerabilities, with a focus on directly modifying protective factors through psychological interventions. She looks forward to applying these interests to support the needs of public safety personnel (PSP) as a doctoral student under Dr. Heather Hadjistavropoulos and Dr. Jill Price at PSPNET.
Awards and Distinctions
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2024: Master's Award, University of Regina
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2023: Canada Graduate Scholarship Master's Award, Canadian Institute of Health Research


Paige Sivell B.A. (Hons.)
Master's Student, Clinical Psychology
University of Regina
Paige completed her Bachelor of Arts in Psychology (Honours) at the University of Regina. Her Honours thesis explored the suitability of internet-delivered cognitive behavioural therapy (ICBT) for Public Safety Personnel (PSP) with subthreshold symptoms. She is currently a master’s student in the Clinical Psychology Program at the University of Regina, under the supervision of Drs. Heather Hadjistavropoulos and Jill Price. Paige’s main research interests include evidence-based psychological treatments for mental disorders.