 Monothematic delusions tend to be circumscribed whereas polythematic delusions tend to be elaborated (see Davies and Coltheart 2000 for a more detailed explanation and some examples). The distinction between circumscribed and elaborated delusions is relevant to the level of integration between our delusions and our other intentional states and to the extent to which our endorsement of the delusion is manifested in verbal reports and observable behavior. Delusions might be more or less circumscribed. A delusion is circumscribed if it does not lead to the formation of other intentional states whose content is significantly related to the content of the delusion, nor does it have pervasive effects on  behavior. For instance, a man with Capgras who believes that his wife has been substituted by an impostor but shows no preoccupation for his wife and does not go and look for her, appears to have a circumscribed delusion. A delusion can be elaborated, if we form other beliefs that revolve around the theme of the delusion. For instance, a woman with Capgras can develop paranoid thoughts related to the content of her delusion, along the lines that the person impersonating her husband has evil intentions and will cause her harm when the occasion presents itself.