Weaknesses of Asch's study
1. low ecological validity as conducted in an artificial setting
2. low mundane realism because no serious consequence given if participants didnt conform.
3. has ethnocentric bias as US and UK have individualist cultures whereas collectivist cultures like China value need for groups so are more likely to conform
4. cannot be generalised as there is an androcentric bias
5. low temporal validity as conducted in the 50s so data may not match if repeated today