Home › Research › Digital health tools
The dementia of dementia praecox
Eve C. Johnstone, Timothy John Crow, Chris Frith, Marilyn Stevens, Louis Kreel, Janet Husband. Acta Psychiatrica Scandinavica, 1978-04-01
Topic: Brain imaging, connectivity and assessment
A group of 18 long‐stay patients with a diagnosis of schizophrenia were compared with a group of 10 age‐matched subjects who had been institutionalized by reason of physical disease, on performance on tests of intellectual function; and with a group of agematched healthy subjects, both on tests of intellectual function, and radiographically, using the technique of computerized axial tomography (EMI scan) of the brain. By comparison with the normal controls the patients with schizophrenia had increased cerebral ventricular size (assessed as cross‐sectional area) and, by comparison with both control groups, showed substantial impairments on intellectual testing. The differences in ventricular area between patients and controls remained significant (P < 0.01) after four patients who had been leucotomized had been excluded. Within the non‐leucotomized patient group ventricular area was unrelated to previous neuroleptic medication, ECT or insulin coma therapy, but there was a significant relationship between ventricular area and intellectual impairment (P < 0.01). Intellectual impairment, as assessed by the Withers & Hinton test battery, the Inglis paired associate learning test, and the digits‐backward test, was greater (P < 0.05) in patients with negative features (affective flattening, retardation, poverty of speech) than in those without such features. Premorbid occupational histories suggested that nearly all of these patients had at one time functioned at an adequate intellectual level. The findings suggest that within the group of patients with schizophrenia there is a subgroup whose illnesses have hitherto been considered typically schizophrenic, who have severe intellectual impairment associated with evidence of structural brain disease. The size of this subgroup and the significance of the cerebral changes remain to be determined.
Cite this study APA, Vancouver, BibTeX · download .bib or .ris
APA 7th
Johnstone, E. C., Crow, T. J., Frith, C., Stevens, M., Kreel, L., & Husband, J. (1978). The dementia of dementia praecox. Acta Psychiatrica Scandinavica. https://doi.org/10.1111/j.1600-0447.1978.tb06899.x
Vancouver
Johnstone EC, Crow TJ, Frith C, Stevens M, Kreel L, Husband J. The dementia of dementia praecox. Acta Psychiatrica Scandinavica. 1978. doi:10.1111/j.1600-0447.1978.tb06899.x. PMID: 665286.
BibTeX
@article{johnstone1978-665286,
author = {Johnstone, Eve C. and Crow, Timothy John and Frith, Chris and Stevens, Marilyn and Kreel, Louis and Husband, Janet},
title = {{The dementia of dementia praecox}},
journal = {Acta Psychiatrica Scandinavica},
year = {1978},
doi = {10.1111/j.1600-0447.1978.tb06899.x},
pmid = {665286},
url = {https://doi.org/10.1111/j.1600-0447.1978.tb06899.x}
}
Built from the record alzhub holds for this paper, not looked up. Volume, issue and page numbers are not held in the record. Check the citation against the original before you use it.
Key findings
- A group of 18 long‐stay patients with a diagnosis of schizophrenia were compared with a group of 10 age‐matched subjects who had been institutionalized by reason of physical disease, on performance on tests of intellectual function; and with a group of agematched healthy subjects, both on tests of intellectual function, and radiographically, using the technique of computerized axial tomography (EMI scan) of the brain.
- The differences in ventricular area between patients and controls remained significant (P < 0.01) after four patients who had been leucotomized had been excluded.
- Within the non‐leucotomized patient group ventricular area was unrelated to previous neuroleptic medication, ECT or insulin coma therapy, but there was a significant relationship between ventricular area and intellectual impairment (P < 0.01).
- Premorbid occupational histories suggested that nearly all of these patients had at one time functioned at an adequate intellectual level.
- The findings suggest that within the group of patients with schizophrenia there is a subgroup whose illnesses have hitherto been considered typically schizophrenic, who have severe intellectual impairment associated with evidence of structural brain disease.
New to this subject? Start with our plain-English guide: Digital health →
Study details
- Evidence strengthLow
How this study scored 36/100
Published in a peer-reviewed journal. Scored zero for study design, sample size, effect reported, studied in people and randomized / blinded because the record does not state it. We have no data on journal's citation record, times cited, citations per year, impact for its field and year, cited by studies here, still being cited, senior author's track record, institution's track record and multicenter collaboration, so those were left out: it earned 21 of the 58 points we could judge it on, which is 36 out of 100.
| Component | Points | Why |
|---|---|---|
| Journal tier | 7 / 10 | Tier 3 — peer-reviewed journal (Acta Psychiatrica Scandinavica) |
| Journal's citation record | — / 4 | No journal record from OpenAlex — left out of this score |
| Study design | 0 / 12 | No study design recorded — scores zero, not guessed (not stated in the record — scored 0) |
| Strength of evidence | 1 / 5 | Rated “low” in our summary |
| Peer-review validation | 10 / 10 | Peer-reviewed. Published as an article in a named peer-reviewed journal. |
| How recent | 1 / 5 | 1978 — older than 20 years, still counted |
| Sample size | 0 / 4 | Participant count not stated — scores zero (not stated in the record — scored 0) |
| Effect reported | 0 / 3 | No effect size reported — scores zero (not stated in the record — scored 0) |
| Studied in people | 0 / 3 | Not stated whether this was studied in people — scores zero (not stated in the record — scored 0) |
| Randomized / blinded | 0 / 2 | No randomization or blinding stated — scores zero (not stated in the record — scored 0) |
| Times cited | — / 7 | No citation count (not found in OpenAlex) — left out of this score |
| Citations per year | — / 5 | No citation count or no year — left out of this score |
| Impact for its field and year | — / 6 | No field-weighted citation impact (OpenAlex has none yet) — left out of this score |
| Cited by studies here | — / 6 | Not yet checked against this library's citation graph — left out of this score |
| Still being cited | — / 4 | No yearly citation counts — left out of this score |
| Senior author's track record | — / 4 | Senior author's record not available — left out of this score |
| Institution's track record | — / 3 | No institution listed in OpenAlex — left out of this score |
| Multicenter collaboration | — / 3 | Institutions not listed — left out of this score |
| Indexed in PubMed | 2 / 2 | Indexed in PubMed (PMID 665286) |
| Free to read | 0 / 2 | Behind a paywall — scores zero |
| Points | 21 / 58 | Scored on 11 of 20 parts. We have no data for the rest, so they are left out: 21 of the 58 points we could judge it on is 36 out of 100. |
| Total | 36 / 100 | — |
What each of these 20 components measures, and what this score is not →
Read the original
Free copy unknown: no free-copy check has an answer for this record yet. That does not mean it is paywalled.
Related
Studies in the library that share something with this one. The line above each title says what.
Related studies in Digital health tools
Also in Digital health tools
178 studies in the library are filed under Digital health tools with no topic tag they share with another; these are this study's neighbours in a fixed tour of them. The Digital health tools hub.