We're unable to sign you in at this time. Please try again in a few minutes.
We were able to sign you in, but your subscription(s) could not be found. Please try again in a few minutes.
There may be a problem with your account. Please contact the AMA Service Center to resolve this issue.
Contact the AMA Service Center:
Telephone: 1 (800) 262-2350 or 1 (312) 670-7827  *   Email: subscriptions@jamanetwork.com
Error Message ......
Article |

Further Evidence for Syndrome-Based Psychotic Types

Arch Gen Psychiatry. 1964;11(4):368-376. doi:10.1001/archpsyc.1964.01720280014003.
Text Size: A A A
Published online


In a recent book, Lorr and Associates5 presented the rationale and some procedures for a quantitative approach to the problem of identifying classes or types of psychotic patients. As part of the series of studies they identified and replicated six syndrome-based psychotic patient types. They defined a psychotic type as a class of patients who could be characterized in the same way on a common set of variables or measures. They used ten syndrome scores in the domain of observable psychotic behavior and symptomatology as the basic data for their typing analyses. The syndrome scores had been derived from an earlier series of factor analyses3,4 of the behavior of psychotics during psychiatric interviews as rated on the Inpatient Multidimensional Psychiatric Scale (IMPS).

The typing studies used the product-moment correlation between persons (Q) as the index of similarity between IMPS pro-files. Statistical analyses of


Sign in

Purchase Options

• Buy this article
• Subscribe to the journal
• Rent this article ?

First Page Preview

View Large
First page PDF preview





Also Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
Please click the checkbox indicating that you have read the full article in order to submit your answers.
Your answers have been saved for later.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.


Some tools below are only available to our subscribers or users with an online account.

0 Citations

Sign in

Purchase Options

• Buy this article
• Subscribe to the journal
• Rent this article ?

Related Content

Customize your page view by dragging & repositioning the boxes below.