"the term was a misnomer because BPD bears little relation to most psychotic disorders." this is true, and most people are unaware of the differences between BPD and other illnesses, especially bipolar.
This study shows that emotional intelligence doesn't always help in determining whether someone is lying; it actually makes one overconfident in their assessment and in turn makes their guess inaccurate.
when participants in the no-lie group told three fewer white lies than they did in other weeks, they experienced on average about four fewer mental-health complaints, such as feeling tense or melancholy, and about three fewer physical complaints, such as sore throats and headaches
by the fifth week, they saw themselves as more honest
Many people thought and still think that eye movements have something to do with lying, but this study shows that there isn't a consistent, direct relationship.
Neuro-Linguistic Programming (NLP)
Professor Richard Wiseman (University of Hertfordshire, UK) and Dr Caroline Watt (University of Edinburgh, UK)