right from wrong and what is illegal. The insanity defence is rarely used, as it is very difficult to prove. If declared insane, an offender may be committed to a secure hospital facility, potentially for much longer than they would have served in prison. Key studies A number of key studies of psychology especially relevant to understanding criminal psychology have been undertaken. These include: Bobo doll experiment (Bandura, Ross & Ross 1961) The Stanford prison experiment (Philip Zimbardo 1973) Eyewitness study (Loftus, Palmer 1974) Studies On Criminological Psychology (Dr. Navinta Rani 1950) See also Forensic psychology Moral psychology Criminal anthropology Antisocial personality disorder Psychopathy Malignant narcissism Sadistic personality disorder References David Canter (2008) Criminal Psychology London: Hodder Education 1876 establishments in Italy Italian inventions Criminology