[Interpretation/Special Indices] PTI

Aliases

PTI
Perceptual-Thinking Index
perceptual-thinking index

Definition

PTI is a composite index that groups signs of perceptual and thinking disorganization. Its function is to alert the reader to review possible distortion of reality, ideational slippage, or loss of perceptual precision.

Interpretation

If PTI is positive, mediation and ideation should be reviewed first.
The index usually becomes more meaningful when problems converge in WSum6, Lv2, M-, X-%, and XA%.
Its interpretation points to possible thought disturbance, not an automatic diagnosis.
The index gains weight when several different parts of the protocol point in the same direction.

Cautions

A positive PTI does not by itself mean psychosis.
A negative PTI does not remove all possibility of disturbed thinking.
Extreme stress, intoxication, situational disorganization, or very low response volume can complicate the reading.

Cross References

PTI is an actuarial signal and requires returning to the base variables.
WSum6, Lv2, M-, X-%, and XA% should be reviewed before drawing strong conclusions.

Evidence Note

WSum6
Lv2
M_minus
X_minus_percent
XA_percent

Evidence Note

[Interpretation/Special Indices] Special Indices
[Interpretation/Ideation] WSum6
[Interpretation/Ideation] Lv2
[Interpretation/Ideation] M-
[Interpretation/Mediation] X-%
[Interpretation/Mediation] XA%

Evidence Note

Detailed source comparison is stored in internal provenance notes.