Information such as the prevalence and frequency of criminal behaviour is difficult to estimate using standard survey techniques because of the tendency of respondents to withhold or misrepresent information. Social desirability bias is a significant threat to the validity of self-reported data. especially when supplied by persons such as sexual offenders or those convicted of theft o... https://www.roneverhart.com/Mesa-Boogie-Rectifier-4x12-Cabinet-Standard-Straight-p31703/