Final answer:
The ecological validity of the Asch study is questionable, as it may not accurately reflect real-world settings, despite showcasing the pressure of conformity. To improve ecological validity, changes could involve subjects being unaware of being part of a study and increasing participant and context diversity.
Step-by-step explanation:
The Asch study has a questionable level of ecological validity because it was conducted in a controlled environment where participants knew they were part of an experiment. Ecological validity refers to how well study findings can be generalized to real-world settings. In Asch's experiments, subjects were faced with the pressure to conform to a group decision that was blatantly incorrect, which may not reflect everyday decision-making scenarios. However, the pressure of conformity demonstrated by the study is a phenomenon that can occur in real-life social situations.
To improve ecological validity, one might suggest modifying the study so that subjects are unaware they are in an experiment and seeing how they conform to group decisions in real-life social settings. Increasing the diversity of the participants and the contexts in which the study is conducted could also enhance the ecological validity.