Yochelson + Samenow

• Summary: criminal behaviour is a result of errors and biases in criminal thinking patterns
• Strength: This idea has led to other research, PICTS is a questionnaire thai is aimed at revealing whether someone shows criminal thought patterns
• Strength: Successful treatment like cognitive behaviour therapy have been developed based on the idea that criminals though processes can be corrected with treatment
• Limitation: Didn't use a control group to see if ‘normal’ people made the same errors
• Limitation: There were no women in his sample which makes it underrepresented
• Limitation: The majority of the participants were clinically insane which could have altered the results
• Limitation: There was a high sample drop out rate (only 30 participants remained at the end)