Forensic Psychology Flashcards
What are three approaches to detecting lies?
Behavioural markers (non-verbal) Speech analysis (verbal) Physiological markers
What some deception signs?
Non-verbal:
Signs of nervousness eg. Gaze aversion (looking away), fidgeting
Verbal:
Reduced detail In speech content
Error in speech content
What are some methods of detecting lies?
Get someone something tell lies and truths and get people off o watch and try to pick the lies
Why are professionals no better at detecting lies than average people?
- lack of interaction with person
55. 7% (hartwig et al 2004)
What are some mistakes that are made with deception detection?
- relying on wrong cues eg. Gaze aversion/fidgeting are not signs of lying
- incorrect explanations for behaviours.. acting nervous
No definite sign
How can lie detection be improved?
Train people for specific markers
(4% improvement vrij, 2008)
Active interview techniques
.. increase cognitive load
Strategic use of information
What do people typically think is an indicator of lying?
Fidgeting
What is actually an indicator of lying?
Higher pitch voice
According to ordinary civilians, professionals such as police officers and customs officials are:
No better at detecting lies and truths
What is the most important reason to why people find it difficult to detect lies?
There are no guaranteed signs
