Three specific phases are defined: the. In early stages of delusional or, more generally, psychotic disorders the patient may register distressing alterations. Identifying information has been changed. The purpose of this communication is to identify the stages of delusion formation: the emotional matrix, the. Delusional disorder, previously called paranoid disorder, is a type of serious mental illness — called a “psychosis”— in which a person cannot. However, a fundamental problem for research on the early phases of psychosis is identifying robust markers for transition to psychosis from the. He postulated three early stages, of domination of the individual's thinking by ominous and diffuse anxiety (trema), followed by precipitation. Psychological and environmental: Research has suggested that stress may trigger delusional disorder. The abuse of substances such as drugs or. One is the genetic or biological theory, which states that close relatives of people with delusional disorder are at increased risk of delusional traits. Review the psychological theories of delusion. Identify at least three syndromes in Roberts () proposes a model with three stages. It is also known as the "critical period." Clear psychotic symptoms are experienced, such as hallucinations, delusions or confused thinking. During this phase.