Table 4

Outline of Psychosis dimension scale. Table shows key points and ranges on the P dimension together with the criteria defining the ranges. More details including explicit guidelines for ratings can be found on page 5 of the BADDS rating guidelines (Appendix A).

Range on P dimension

Criterion defining range


No evidence of psychotic or near-psychotic schizotypal features


Uncertainty about presence of psychotic-spectrum symptoms (ie. Suspected but not definite)


Presence of near-psychotic schizotypal features but never any clear-cut psychotic symptoms


Brief, clear-cut psychotic symptoms that are not a prominent feature of the illness

21 – 100

Clear-cut psychotic symptoms that are a prominent feature of one or more episodes of illness

Craddock et al. BMC Psychiatry 2004 4:19   doi:10.1186/1471-244X-4-19

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