Participate in Research

Thank you for your interest in participating in research related to toilet anxiety. Below is a list of studies currently being run by Dr. Simon Knowles and colleagues. Please click the link below the study title to participate:


Study title: Exploring the role of attitudes and cognition in toilet anxiety and fear of incontinence

Investigators: Mr Kenley Kuoch, Dr Simon Knowles, Prof Denny Meyer & Prof David Austin

Study description: We are interested in learning more about toilet anxiety (also known as shy bladder or shy bowel, and paruresis or parcopresis) and fear of incontinence (also known as bladder and bowel incontinence phobia) and are looking for male and female participants aged 18 years or older. Toilet anxiety involves feeling uncomfortable using public toilets despite feeling comfortable using a toilet at home, while fear of incontinence refers to the overwhelming fear of incontinence in the absence of a medically diagnosed bladder or bowel condition. This project involves exploring how attitudes about oneself, cognitive processes (unhelpful thoughts), social-cognitive processes (positive and negative evaluations) and social anxiety, relate to toilet anxiety and fear of incontinence. Your answers to this questionnaire will help inform mental health professionals to offer support to individuals with toilet anxiety and/or fear of incontinence. Your participation is voluntary and you may stop at any time. It is expected that the survey will take approximately 60 minutes of your time.

The survey is available on the following link:

Study title: Do psychological concerns drive your bowel discomfort - help us develop a scale to better measure these processes.

Principle Investigator: Dr Simon Knowles, (03) 9214 8206, email:

Other investigators involved: Dr Pragalathan Apputhurai (Lecturer in Statistics), Dr Rebecca Burgell (Consultant Gastroenterologist, The Alfred Hospital), Mr Stephan Moller (Research Assistant) & Professor Laurie Keefer (Health Psychologist, Susan and Leonard Feinstein IBD Clinical Center, New York). 

Study description: Psychological distress and gastrointestinal symptoms commonly occur together and are frequently reported in community samples. Your responses will help us better understand how thinking patterns impact upon gastrointestinal discomfort. Further your participation will also help us to develop a new scale that can help better identify and target psychological processes associated with gastrointestinal discomfort.  The study involves completing an online questionnaire that will take approximately 30 minutes to complete.

Go into the draw to win 1 of 4 $100AUS vouchers

At the end of the study you are welcome to add your email address (stored independently from the questionnaire data) in order to go into a draw to win 1 of 4 $100AUS vouchers. Winners will be drawn on the 31st of October 2018.

The survey is available on the following link:


Disclaimer: This website and its content is not intended or recommended as a substitute for medical advice, diagnosis or treatment. Always seek advice of your own physician or other qualified health care professional regarding any medical questions or conditions.

© Copyright Dr Simon Knowles 2018