An important cognitive process in OCD is the way thoughts or images become fused with reality. This process is called ‘thought–action fusion’ or ‘magical thinking'. Thus, if a person thinks of harming someone, they think that they will act on the thought or might have acted on it in the past. A related process is ‘moral thought–action fusion’, which is the belief that thinking about a bad action is morally equivalent to doing it. Lastly, there is ‘thought–object fusion’, which is a belief that objects can become contaminated by ‘catching’ memories or other people’s experiences.