Final answer:
The most important rule when adjusting a subject property for CMA is Consistency, ensuring a valid and accurate valuation. Congruence aligns self-perception with actions, good continuation informs our perception of lines, and collective decision-making may show a bias toward the status quo.
Step-by-step explanation:
The number one rule of adjusting the subject property in regards to the Comparative Market Analysis (CMA) approach is Consistency. When performing a CMA, it's crucial to apply adjustments consistently across all properties being compared. This maintains the validity of the comparison and ensures the most accurate valuation.
In relation to other concepts, one can consider the idea that people's ideas about themselves should match their actions, which is called congruence. Regarding visual perception, according to the Gestalt psychology principle, choppy or jagged lines are indicative of the law of good continuation. Lastly, in collective decision-making, there often exists a bias towards the status quo.