Evaluating Asch's Research
+ High internal validity. Lab study. High control over variables. Standardised instructions, same behaviour from the confederates and researchers.
+ Reliable study. Could easily be replicated in the same way today. (link to standardisation)
- Lacks ecological validity. Conducted in a lab + use of artificial materials. Says little about how conformity works in real life social settings. Unlikely that we would ever find ourselves in the same situation that he created naturally
- Lacks temporal validity. In the 1950s, the USA was very conservative and was involved in an anti-communist witch hunt against anybody who thought to hold left wing view. May not generalise well to todays social contexts