scholarly journals Factor structure and familiality of first-rank symptoms in sibling pairs with schizophrenia and schizoaffective disorder

2000 ◽  
Vol 177 (1) ◽  
pp. 15-19 ◽  
Author(s):  
Josephine Loftus ◽  
Lynn E. Delisi ◽  
Timothy J. Crow
Keyword(s):  
Factor Structure ◽  
Principal Components ◽  
Genetic Predisposition ◽  
Schizoaffective Disorder ◽  
Sibling Pairs ◽  
Factor I ◽  
Third Person ◽  
Components Analysis ◽  
Major Factors ◽  
First Rank Symptoms

BackgroundSince their introduction as diagnostic criteria by Schneider in 1937, nuclear symptoms have played a key role in concepts of schizophrenia, but their relationship to each other and to genetic predisposition has been unclear.AimsTo ascertain the factor structure and familiality of nuclear symptoms.MethodsNuclear (Schneiderian) symptoms were extracted from case notes and interviews in a study of 103 sibling pairs with DSM–III–R schizophrenia or schizoaffective disorder.ResultsPrincipal components analysis demonstrated two major factors: one, accounting for about 50% of the variance, groups thought withdrawal, insertion and broadcasting, with delusions of control; and the second, accounting for <20% of the variance, groups together third-person voices, thought echo and running commentary. Factor I was significantly correlated within sibling pairs.ConclusionsThe correlation within sibling pairs suggests that, contrary to the conclusion of some previous studies, some nuclear symptoms do show a degree of familiality and therefore perhaps heritability.

The Reminiscence Functions Scale: A Replication

1997 ◽  
Vol 44 (2) ◽  
pp. 137-148 ◽  
Author(s):  
Jeffrey Dean Webster
Keyword(s):  
Problem Solving ◽  
Principal Components Analysis ◽  
Factor Structure ◽  
Age Differences ◽  
Internal Consistency ◽  
Principal Components ◽  
Validation Study ◽  
Scale Construction ◽  
Identity Problem ◽  
Components Analysis

This article reports the findings of a replication and validation study of the factor structure of the recently developed Reminiscence Functions Scale (RFS) [1]. Three hundred and ninety-nine adult subjects ranging in age from seventeen to forty-five years ( M age = 22.7, SD = 5.7) completed the RFS. A principal components analysis indicated the viability of an eight-factor scale which strongly parallels the earlier scale construction. Factors were labeled: Boredom Reduction, Death Preparation, Identity, Problem-Solving, Conversation, Intimacy Maintenance, Bitterness Revival, and Teach/Inform. Internal consistency scores ranged from .74 to .86 and closely duplicated original scores. Age differences on Death Preparation and Teach/Inform were replicated. Potential uses of the RFS are documented.

Factor Structure of the Depression-Proneness Rating Scale

1987 ◽  
Vol 61 (3) ◽  
pp. 863-866
Author(s):  
Sung-Mook Hong
Keyword(s):  
University Students ◽  
Principal Components Analysis ◽  
Factor Structure ◽  
Principal Components ◽  
Rating Scale ◽  
Varimax Rotation ◽  
Cognitive Components ◽  
Depression Proneness ◽  
Components Analysis ◽  
Depression Scales

The Zemore Depression-Proneness Rating Scale was administered to 208 university students. A principal components analysis with varimax rotation identified three factors representing Negative Self-attitude, Performance Difficulty, and Lack of Appetite. Some similarity between the present factors and those of the Beck Depression Inventory was discussed. Because the scale overemphasizes cognitive components, attention to items on the somatic aspects of depression was suggested. However, it should be noted that depression-proneness appears to be the feature of Zemore's scale that sets it apart from other depression scales.

Factor Structure of the Spanish Version of the Object-Spatial Imagery and Verbal Questionnaire

2011 ◽  
Vol 108 (2) ◽  
pp. 470-476 ◽  
Author(s):  
Alfredo Campos ◽  
María José Pérez-Fabello
Keyword(s):  
Principal Components Analysis ◽  
Factor Structure ◽  
Principal Components ◽  
Original Version ◽  
Spanish Version ◽  
University Graduates ◽  
Varimax Rotation ◽  
Spatial Imagery ◽  
Components Analysis ◽  
Questionnaire Measures

The reliability and factor structure of the Spanish version of the Object-Spatial Imagery and Verbal Questionnaire (OSIVQ) were assessed in a sample of 213 Spanish university graduates. The questionnaire measures three types of processing preferences (verbal, object imagery, and spatial imagery). Principal components analysis with varimax rotation identified three factors, corresponding to the three scales proposed in the original version, explaining 33.1% of the overall variance. Cronbach's alphas were .72, .77, and .81 for the verbal, object imagery, and spatial imagery scales, respectively.

Associations of Multiple Measures of Openness to Experience with a Brief Questionnaire of Positive, Negative, and Disorganized Schizotypy

2021 ◽  
pp. 1-9
Author(s):  
Kathryn C. Kemp ◽  
Michael L. Raulin ◽  
Chris J. Burgin ◽  
Neus Barrantes-Vidal ◽  
Thomas R. Kwapil
Keyword(s):  
Construct Validity ◽  
Factor Structure ◽  
Principal Components ◽  
Openness To Experience ◽  
Schizophrenia Spectrum Disorders ◽  
Multidimensional Construct ◽  
Schizophrenia Spectrum ◽  
Components Analysis ◽  
Spectrum Disorders ◽  
Subclinical Symptoms

Abstract. The vulnerability for schizophrenia-spectrum disorders is expressed across a continuum of clinical and subclinical symptoms and impairment known as schizotypy. Schizotypy is a multidimensional construct with positive, negative, and disorganized dimensions. Openness to experience offers a useful personality domain for exploring multidimensional schizotypy. This study examined the factor structure of openness and its relation to schizotypy using the Multidimensional Schizotypy Scale-Brief (MSS-B) in a sample of 2,236 adults. Positive schizotypy was broadly associated with elevated openness and negative schizotypy was generally associated with diminished openness. Principal components analysis of 15 openness facets replicated the four-factor structure of openness including Fantasy/Feelings, Eccentricity, Nontraditionalism, and Ideas factors. All three schizotypy dimensions were associated with Eccentricity. Positive schizotypy was associated with Fantasy/Feelings, whereas negative schizotypy was inversely associated with Fantasy/Feelings. Results support the construct validity of the MSS-B, use of alternative openness measures in examining schizotypy, and the multidimensional structures of schizotypy and openness.

Allport-Vernon-Lindzey Study of Values: 1. Factor Structure for a Combined Sample of Male and Female College Students

1970 ◽  
Vol 27 (3) ◽  
pp. 955-958 ◽  
Author(s):  
Rio Sciortino
Keyword(s):  
College Students ◽  
Principal Components Analysis ◽  
Factor Structure ◽  
Principal Components ◽  
The Self ◽  
Female College Students ◽  
Male And Female ◽  
Female College ◽  
Components Analysis

A principal components analysis was performed on the self-ratings (for a combined sample) obtained from the Allport-Vernon-Lindzey Study of Values ( N = 150 combined sample of 102 male and 48 female college students). The obtained principal components were then rotated according to the varimax procedure. The varimax factors obtained were: esthetic, social, and religious.

Development of a Short-Form Conservatism Scale Suitable for Mail Surveys

1993 ◽  
Vol 72 (2) ◽  
pp. 419-422 ◽  
Author(s):  
David M. Collins ◽  
Peter F. Hayes
Keyword(s):  
Principal Components Analysis ◽  
Factor Structure ◽  
Principal Components ◽  
Short Form ◽  
Coefficient Alpha ◽  
Varimax Rotation ◽  
Mail Surveys ◽  
Five Factors ◽  
Components Analysis

Analysis of data from 255 U.S. pharmacists provides support for the consistency and validity of this short-form conservatism scale. The scale returned a coefficient alpha of 0.82, and principal components analysis yielded a strong general conservatism factor. Varimax rotation produced five factors consistent with the factor structure of the original Conservatism Scale.

Further Considerations of the Multidimensionality and Factor Structure of the Rotter Locus of Control Scale

1987 ◽  
Vol 60 (3_part_2) ◽  
pp. 1059-1062
Author(s):  
Howard N. Anderson ◽  
Stephen Madonna ◽  
Glenda K. Bailey ◽  
Andrea L. Wesley
Keyword(s):  
Locus Of Control ◽  
Principal Components Analysis ◽  
Factor Structure ◽  
Principal Components ◽  
Total Variance ◽  
Varimax Rotation ◽  
Factor Solution ◽  
Control Scale ◽  
Two Factors ◽  
Components Analysis

The present study was designed to determine the number and nature of factors involved in Rotter's I-E Scale and to examine the question of the multidimensionality of the scale. Subjects were 329 college undergraduates. Principal components analysis was performed on the 23 pertinent items of the scale, followed by Varimax rotation. Multiple criteria indicated a 10-factor solution which accounted for 61% of the total variance. The first two factors were strongly similar to those reported previously. Results support Rotter's (1975) contention that subclasses within the scale will vary from sample to sample.

Children's Fears: A Survey of Italian Children Ages 6 to 10 Years

2009 ◽  
Vol 104 (3) ◽  
pp. 971-988 ◽  
Author(s):  
Silvia Salcuni ◽  
Daniela di Riso ◽  
Claudia Mazzeschi ◽  
Adriana Lis
Keyword(s):  
Principal Components Analysis ◽  
Factor Structure ◽  
Age Differences ◽  
Principal Components ◽  
Factor Scores ◽  
Mainstream Classrooms ◽  
Average Factor ◽  
Fear Survey Schedule ◽  
Components Analysis ◽  
Italian Children

The aim of this study was to explore children's fears. The article reports on average factor scores of a study carried out in Italy using the Fear Survey Schedule for Children (here, the “Fear Survey”; Ollendick, 1983) with normal 6- to 10-yr.-old children (931 girls, 914 boys). Participants were 1,845 children, recruited in mainstream classrooms. Respondents were asked to complete the schedule indicating their fears and the intensity of such fears. A principal components analysis yielded a four-factor structure (1: Death and Danger, 2: Injury and Animals, 3: Failure and Criticism, 4: Fear of the Unknown). Average factor scores showed significant differences across the factors and according to sex and age. Girls reported significantly higher fearfulness than boys. Age differences were found on some factors.

Factor Structure and Internal Consistency of the Spanish Version of the Gordon Test of Visual Imagery Control

2004 ◽  
Vol 94 (3) ◽  
pp. 761-766 ◽  
Author(s):  
María José Pérez-Fabello ◽  
Alfredo Campos
Keyword(s):  
Principal Components Analysis ◽  
Factor Structure ◽  
Internal Consistency ◽  
Principal Components ◽  
Visual Imagery ◽  
Spanish Version ◽  
Orthogonal Rotation ◽  
Components Analysis

We examined the factor structure and internal consistency of the Spanish version of the Gordon Test of Visual Imagery Control, as well as the correlations with scores on the Vividness of Visual Imagery Questionnaire and the Verbalizer-Visualizer Questionnaire, for a sample of 479 undergraduates. Principal components analysis, followed by varimax orthogonal rotation, identified the expected four factors (Movement, Misfortune, Colour, and Stationarity), which jointly explained 55% of the variance. The Gordon Test had a Cronbach α value of .69 and correlated significantly with scores on Marks' Vividness of Visual Imagery Questionnaire.

A Factor Analysis of Raven's Advanced Progressive Matrices Freed of Difficulty Factors

1981 ◽  
Vol 41 (4) ◽  
pp. 1295-1302 ◽  
Author(s):  
Ronna F. Dillon ◽  
John T. Pohlmann ◽  
David F. Lohman
Keyword(s):  
Factor Analysis ◽  
Factor Structure ◽  
Principal Components ◽  
Item Difficulty ◽  
Guttman Scale ◽  
Successful Performance ◽  
Logical Operations ◽  
Factor Ii ◽  
Components Analysis ◽  
Raven's Advanced Progressive Matrices

The study presents a factor analysis of the 1962 revision of the Advanced Progressive Matrices (APM). The analysis was conducted such that substantive factor structure interpretations were freed of the effects of differences in item difficulty. The APM test was given to 237 examinees, 16–18 years old. The data were subjected to a Guttman scale analysis to determine whether the APM could be interpreted as a one factor instrument. Then the phi/phi max inter-item correlation matrix was factored. A principal components analysis, followed by a series of varimax rotations of the principal components, was performed. The Guttman coefficients of scalability were too small to support a one factor theory of the APM. The 2-factor solution provided the most interpretable factor structure. Factor I was composed of items in which the solution was obtained by adding or subtracting patterns. Factor II was composed of items in which the solution was based on the ability to perceive the progression of a pattern. Results are discussed in terms of representative cognitive tests and tasks believed to embody the logical operations responsible for successful performance on items loading on each factor. The possibility of forming subtests of items to enhance the predictive validity of the matrices also is discussed.

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