About - Our people

The principals of Insight & Influence, David Heap and Randal Tame, have over 50 years combined experience in assisting individuals and organisations to develop deep insights into the impact that change makes on people in organisations and what successful leaders do to help their followers respond faster and more effectively to the changed demands made on them.
David Heap
David is an organisational and coaching psychologist who has been helping people be more successful at what they do since 1980. He is now focused on assisting leaders create successful organisational change. In the intervening years he has done most of the things that psychologists and human resources practitioners do; selection and recruitment, assessment - individual, team and organisational, training and development, designing and running assessment and development centres, teaching, counselling, outplacement, career guidance and coaching.
The connecting thread through all of this is; by giving people better insight into themselves and those around them, they are better able to influence themselves and others. As a result they create successful transitions for themselves and those around them.
During his career, David has worked for PA Consulting Group, Davidson & Axsmith, KPMG, Commonwealth Attorney-General’s Department, Department of Defence, Australian Graduate School of Management, Mt Eliza College, Australian College of Applied Psychology and the RAAF.
David is a Visiting Fellow in the School of Psychology at the University of NSW. He has taught People Management at the Australian Graduate School of Management.
David has a BSc (Psych) with Honours from the University of NSW and a MBA from the AGSM. He is registered to practice as a psychologist in NSW. He is NSW Coordinator, and is on the National Committee of, the Coaching Psychology Interest Group of the Australian Psychological Society. He is a member of the College of Organisational Psychologists and a Chartered Member of the Australian Human Resources Institute. He is a supervisor for the psychologist registration program at the Australian College of Applied Psychology.
Randal Tame
Randal experience in leadership, management, marketing, influence and persuasion.
He has provided consulting, coaching and training to clients in both the public and private sector, including Austrade, WorkCover NSW, NSW Health, Clinical Excellence Commission, O&M, Lexis Nexis, Lend Lease, AMP, Mallesons Stephen Jaques, GSK, Boehringer Ingelheim, and the board of the Australian Paralympics. He has coached hundreds of executives on their leadership development as well as on specific issues such as major change initiatives, marketing strategy, strategic account management and business development.
In 1998, Randal founded Influence Consulting, Influence Consulting assists organisations to apply the science of ethical influence to their marketing, business development and management functions. Influence Consulting has advised the branding strategies of some of Australia’s top brands, coached executives and workers on enterprise bargaining agreements and, has assisted clients to win over 300 major new business contracts, the most complex being Multiplex’s bid for the Sydney Olympic Stadium.
His career background includes five years as Manager of Consulting at Rogen International, and 4 years as a consultant at PA Consulting. Prior to PA Consulting, Randal spent ten years in sales and marketing roles within the computer and oil industries.
Randal is an adjunct lecturer in management at Macquarie Graduate School of Public Performance for Managers, Management and teaches on a variety of executive and award programs including Foundations of General Management, Women in Leadership, Emerging Leaders, HR Leaders, and the popular Present, Communicate Influence Program. Randal teaches influencing skills on the International Museum Leadership Program. He also developed and teaches the Managerial Leadership Development program for AIM’s postgraduate diploma in management as well as the Strategic Account Management program.
Randal has a BA in psychology and a MBA from Macquarie Graduate School of Management.
the rest of the team
Joanne Abbey
Joanne has extensive experience as an organisational psychologist in assessment, human development and teamwork. She has worked for KPMG, PwC and McKenzie Consulting Services.
She is Chairperson of the NSW College of Organisational Psychologists, National Professional Development Convenor for the APS College of Organisational Psychologists, a member of the Professional Practice Advisory Group to the Board of the Australian Psychological Society, and a graduate of the Australian Institute of Company Directors. She is currently completing her PhD on wellbeing in the workplace.
Kim Cardile
Kim is a highly qualified sports, clinical and coaching psychologist with extensive experience across many applications of enhancing human performance
She has worked with the Australian Institute of Sports on , the Northern Territory Institute of Sports, Charles Darwin University and Davidson Traihaire CorpPsych.
She is currently completing her PhD in coaching psychology.
Vicki DePrazer
Vicki de Prazer was the first female psychologist appointed to the Australian Institute of Sport; Australia’s world class centre for excellence in Sport and was on the first Olympic Team to have female psychologists,
Vicki is the only female psychologist to have attended three Olympic Games, and a Paralympic Games and currently consults Nationally and Internationally in performance psychology .
Vicki has a particular interest in Performance Excellence in demanding occupations, e.g Politics, Medicine, Law ,and the Arts.
She is currently completing her PhD in coaching psychology.
Mark Garrrad
Mark has worked as an organisational psychologist in the public sector, the military and in banking and medical services. He has lectured at a tertiary level in the areas of Organizational Behaviour and Human Resource Management. Mark’s expertise lies in identification and development of organisational “talent”, using a wide range of extensively validated methodologies.
He lived for several years in the United Arab Emirates working in assessment, selection and outplacement. He is a member of the College of Organisational Psychologists, the American Psychological Association and the Society of Industrial and Organisational Psychologists. He has a PhD in psychology.
Lyndal Stiller-Hughes
Lyndal brings over 20 years of change consultancy, leadership assessment and development experience spanning throughout Australia and Europe within private and public sector organisations. Previously, Lyndal was an executive at Accenture, specialising in navigating and implementing major ‘people’ change in global organisations .
As well as her degree in psychology from the University of Queensland, Lyndal has a Master of Science in Organisational Psychology from Manchester School of Management, UMIST, and in 2009 will complete her Masters of Applied Science in Psychology of Coaching from the University of Sydney
