Stu Dunn
Stu Dunn
Dr. Paul Ekman
Micro Expressions
Body Language
SDL Behavioural Science Consultancy
StatisticsSDL helps our clients to understand non-verbal communication and to avoid deception. We do this by providing online courses, training and specialist advice in areas of behaviour, emotional analysis and deception detection.

"Encouraging honest communication in business, personal and family interactions through education."

SDL's Mission Statement: To be the worldwide leader in consulting and training in the area of facial expressions, non verbal behaviour and deception detection for both public and private sectors.

Our Clientele: SDL has worked with people from New Zealand, Australia, United States, United Kingdom, India, Canada, Germany, Afghanistan, Portugal, Poland, Switzerland, Macedonia and Sri Lanka so far.

To view SDL's Online and 2-Day training and consulting services, please visit the services page.

SDL is New Zealand's first Facial Action Coding System (FACS) Certified Consulting.

To read more about Stu's book; True Lies: A Guide to Reading Faces, Interpreting Body Language and Detecting Deception in the Real World, click here.


Guideline to Catching Liars by Examining Nonverbal and Verbal Behaviour - Observational Guidelines (4): Be suspicious but do not show suspicion. Overall people have the tendency to believe others. Sometimes this is due to a lack of interest in detecting a lies (the ostrich effect), or because of a variety of reasons related to the truth-bias. Perhaps because of the truth-bias, being suspicious is a necessary prerequisite to catching liars, which leads to improved analysis of nonverbal and verbal behaviour. However it's important not to let on suspicion, as this may make truth tellers feel uncomfortable (which would result in the Othello error), or have liars close up and refuse to talk or they may change their behaviour to come across more credible.
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