Longitudinal factor analysis

Psychometrika ◽  
1970 ◽  
Vol 35 (1) ◽  
pp. 79-98 ◽  
Author(s):  
M. C. Corballis ◽  
R. E. Traub
Keyword(s):  
Factor Analysis ◽  
Longitudinal Factor Analysis

Long-Term Stability of Diagnosis and Symptom Dimensions in a Systematic Sample of Patients with Onset of Schizophrenia in Childhood and Early Adolescence. II: Positive/Negative Distinction and Childhood Predictors of Adult Outcome

1996 ◽  
Vol 169 (3) ◽  
pp. 371-378 ◽  
Author(s):  
Michel Maziade ◽  
Stéphane Bouchard ◽  
Nathalie Gingras ◽  
Liliane Charron ◽  
Andrée Cardinal ◽  
...  
Keyword(s):  
Factor Analysis ◽  
Negative Symptoms ◽  
Term Outcome ◽  
Long Term Outcome ◽  
Symptom Dimensions ◽  
Developmental Problems ◽  
Adult Outcome ◽  
Longitudinal Factor Analysis ◽  
Childhood Predictors

BackgroundThe aim of this study was to verify the presence and stability across life of the positive/negative distinction in early-onset schizophrenia (EO-SZ) through a longitudinal factor analysis of the schizophrenic dimensions, and to identify the factors predicting several indices of long-term outcome for EO-SZ.MethodForty children consecutively referred for DSM–III–R schizophrenia (SZ) in a specific catchment area comprised the sample.ResultsAcross a 14.8-year follow-up, longitudinal factor analysis identified two separate factors corresponding to the positive and negative symptom dimensions. We also observed that: the GAS rated over the last three years of adult illness and the severity of negative symptoms during the stabilised interepisode intervals in adulthood were the indices of adult outcome that were most easily predicted; and the best childhood predictors of adult outcome were premorbid functioning and severity of positive and negative symptoms during acute episodes.ConclusionsThe presence of premorbid non-psychotic behaviour disturbances (NPBD) and premorbid developmental problems was not related to severity of outcome, in contrast to the former variables.

Longitudinal factor analysis of the Comprehensive Feeding Practices Questionnaire among parents of preschool-aged children

Appetite ◽  
2018 ◽  
Vol 129 ◽  
pp. 94-102 ◽  
Author(s):  
Jaclyn A. Saltzman ◽  
Katherine N. Balantekin ◽  
Salma Musaad ◽  
Kelly K. Bost ◽  
Barbara H. Fiese
Keyword(s):  
Factor Analysis ◽  
Feeding Practices ◽  
Longitudinal Factor Analysis ◽  
Preschool Aged Children

Exploratory longitudinal factor analysis in multiple populations

Psychometrika ◽  
1989 ◽  
Vol 54 (2) ◽  
pp. 261-281 ◽  
Author(s):  
John Tisak ◽  
William Meredith
Keyword(s):  
Factor Analysis ◽  
Multiple Populations ◽  
Longitudinal Factor Analysis
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