Claudia Hammond finds out how MDMA assisted psychotherapy could help treat people with alcohol dependence. Trials are in their early stages but initial results are promising. Could this in the future be a new way to treat an addiction which ordinarily can have high relapse rates? Clinical psychologist, Laurie Higbe, explains how she and co therapist, Dr Ben Sessa, conduct the therapy and why MDMA might work at helping tackle the causes of alcohol addiction. Also, why city traders who can detect their own heartbeat may have better instincts when they have to make quick decisions on what's happening in the financial markets. Professor Sarah Garfinkel from the University of Sussex explains why the heart can be a powerful source of information guiding our behaviour without us being consciously aware of it. And Stephanie Johnson from the University of Colorado discusses her research exploring the relationship between risk taking and entrepreneurial behaviour and the toxoplasma gondii parasite.

Claudia visits a specialist personality disorder clinic in South London where she meets Jo, Susan and Chanelle to talk about what it's like to have a diagnosis of borderline personality disorder. Psychotherapist, Merryn Jones explains why long term, regular group and individual therapy can help people cope with the intense emotional difficulties often caused by traumatic early life experiences.

Happy Birthday to us! All in the Mind is 30 years old this month and to celebrate we’ve searched the archive to bring you clips of Anthony Clare, the original presenter of the programme, and a very young Claudia Hammond as a reporter. Professor Catherine Loveday is in the studio with Claudia to discuss the pieces of psychology research which have had the biggest impact on them in that time.

Last month Donald Trump called for civility after pipe bombs were posted to ten of his most vocal opponents. As America goes to the polls for midterm elections we hear about a new piece of research that suggests civility in politics is not dead. Dr Jeremy Frimer, from the University of Winnipeg in Canada, explains his new research on how approval ratings vary before and after volunteers read tweets by Donald Trump.

And what impact does a year in the Arctic have on your mental state? Claudia talks to research psychologist, Dr Anna Temp, who travelled to Svalbard to find out what impact a prolonged stay has on the mental health of scientists working there. How do they cope with the total darkness of the polar nights? And what's it like to be cooped up with 10 of your colleagues and polar bears lurking outside?

Producer: Lorna Stewart

55,000 people worldwide completed the BBC Loneliness Experiment. It is the largest survey of loneliness ever done. The results are unique in their scope and reach and were revealed first at an event in the Reading Room of Wellcome Collection.

At the live event, presented by Claudia Hammond, musician Jazz Morley and poet Daljit Nagra perform and talk about how their creativity was driven by their loneliness. Philosopher Julian Baggini challenges the idea that loneliness is always a negative experience. And Claudia discusses the results of the Wellcome supported research with Professor Christina Victor of Brunel University and Professor Pam Qualter of Manchester University.

1. Distraction - devoting time to hobbies, study or work

2. Taking up new social activities or joining a club

3. Changing your thinking to make it more positive

4. Starting a conversation with someone

5. Talking to Friends or family about your feelings

6. Look for the good in everyone