P lack of scientific credibility due to flawed evidence.
E The FBI’s profiling system was based on interviews with 36 murderers, classified as organised (24) or disorganised (12). However, the interviews lacked a standardised structure, making the data inconsistent and difficult to compare.
E Canter et al. criticised the study for using a small, unrepresentative sample that did not include different offender types. This weakens the reliability of the classification system, as it is based on subjective interpretations rather than scientific evidence.
L As a result, the top-down approach may be an unreliable tool for criminal investigations.