Personality Disorder Interactive
Measure Your Big Five Personality Traits
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The Iowa Gambling Test
The Iowa Gambling Task is a reward / punishment task that assesses your personality by analyzing your behavior during a card game where you do not know the rules.   
The Hexaco Test
More recent studies of personality traits have added a sixth factor, Honesty-Humility to the big five personality.  The Hexaco Personality Test can be taken here.
The Personality Disorder Tube Map
Here is a great diagram showing the natural development and progression of personality disorder based on clinical research studies produced by Rex Haigh.
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Standardised Assessment of Personality – Abbreviated Scale (Moran)
The Standardised Assessment of Personality – Abbreviated Scale (SAPAS) is a short and simple interview‐administered screen for Personality Disorder. The SAPAS was developed from the semi‐structured interview Standardised Assessment of Personality and validated in a sample of psychiatric patients, where it was found to have good psychometric properties, correctly identifying the presence of PD in 90% of patients, with a sensitivity and specificity of 0.94 and 0.85 respectively.
A name and an e-mail address is required by the software to play. You can use any name, or just clip and paste Joe Bloggs at in the game if you wish. These details are only recorded in the game's log history file.  This is only used for statistical analysis of average scores. 
Measure Your Introversion:  The Lemon Test
This is a simple test that you can conduct at home that will measure your Extroversion-Introversion
 biologically.  You will need:
  • A double headed cotton wool bud
  • Thread or dental floss
  • Some concentrated lemon juice
  • Your (or someone else's) tongue
Step One:  Tie the thread / dental floss to the middle of the cotton wool bud, so you can hold one end of the thread and the cotton bud hangs down like a pendulum.  Make sure the thread is tied to the middle, so the cotton bud is perfectly balanced like an upside down "T".
Step Two:  Hold one end of the cotton bud on your tongue for 20 seconds and remove.
Step Three: Drip five drops of lemon juice on your tongue and swish it around in your mouth.
Step Four:  Hold the other end of the cotton bud on your tongue for 20 seconds and remove.
Step Five:  Suspend the cotton bud in the air by the thread like the upside down "T".
Step Six:  Check to see if the cotton bud now leans to the lemon juice dabbed end.  If it does tip, you are an Introvert.  If it remains balanced then you are an Extrovert.
Why?  Introverts experience much higher levels of physical arousal then Extroverts. This is even reflected in salivation.  So Introverts salivate much more than Extroverts in contact with the lemon juice, resulting in the cotton bud tipping because it becomes heavier.
Source:  Brian R. Little:  Me, Myself and Us.  Public Affairs Books, (2014).
The Dark Triad Test
The Dark Triad personality traits are three related personality traits that define those with a malevolent personality. These include machiavellianism (a manipulative attitude), narcissism (excessive self-love), and psychopathy (lack of empathy). To take the test at the Open Source Psychometrics Project.
Dark Core Personality Assessment
The Dark Core research studies emerged from a general fining that people score in a very similar way-regardless of the personality test they take.  This revealed a deeper level of personality consistency.  Based on this, Morten Moshagen, Benjamin E. Hilbig & Ingo Zettler identified what they believe are the Dark Core personality features that represent a unified theory of the Dark Personality or D Factor.
Borderline Personality Disorder Free Online Course

This education series was designed for professionals to learn basic principles for the diagnosis and treatment of Borderline Personality Disorder (Emotionally Unstable).  The series of six, 20-minute modules features videos of patients/families, interactive quizzes, narrated slides, and videos from a number of experts.  The video clips were made possible by Dawkins Productions. They are all from the video series.