Lots of studies supporting the psychodynamic view of criminal behaviour and psychopathy
Bender
Observed emotional deprivation during infancy as a cause of psychopathic behaviour disorder in children at Bellevue Hospital
Spitz
found that inconsistent mothers with unpredictable love in the early years may lead to psychopathic personality
Silverman
80% of psychopathic personalities had an unhealthy parent-child relationship,showing a connection between unstable mother relationships and psychopathic behaviour