Most of these types of psychological effects are disconnected from logical reasoning and work even if you are aware of them and try to account for them. For exa

Most of these types of psychological effects are disconnected from logical reasoning and work even if you are aware of them and try to account for them. For example, pricing something at $9.99 instead of $10.00. Studies have shown that when people are perfectly aware of why this is done, it still has the desired effect.