1. EQS: subjective (based on personal opinion), rigid categories, the scale was sometimes hard to apply
2. Land Use Survey: time-consuming, not reflective of activity, some shops were hard to decide, not enough detail
3. Footfall survey: relative to time (did not account for peak mall time), significant variations in results between groups, human error counting people, hard to distinguish which results are anomalous
4. Questionnaires: biased, possible stranger danger, and language barriers made this more complicated.