• 

  Stacy Kaiser

  饰：Herself - Psychotherapist

• 

  Riaz Patel

  饰：Himself - Researcher

• 

  Paul Zak

  饰：Himself - Neuroeconomist

• 

  Karen Stewart

  饰：Herself - Psychologist

• 

  Khana Lacewell

  饰：Herself - Psychotherapist

• 

  Ramani Durvasula

  饰：Herself - Psychologist

• 

  David Swanson

  饰：Himself - Psychologist

• 

  Shirley Impellizzeri

  饰：Herself - Clinical Psychologist

• 

  Tim Dadabo

  饰：Narrator

• 

  Reef Karim

  饰：Self - Psychiatrist