On the Validity of the OOST Interest Inventory

1998 ◽  
Vol 86 (2) ◽  
pp. 614-614
Author(s):  
Stanley Oosthuizen
Keyword(s):  
Factor Analysis ◽  
Construct Validity ◽  
Physical Activities ◽  
Principal Factor ◽  
Varimax Rotation ◽  
Interest Inventory ◽  
Principal Factor Analysis ◽  
Chemistry Students

The Oost Interest Inventory was administered to 69 English, 126 Economy and 110 Chemistry students during 1993, to obtain information on construct validity. Except for the area Physical Activities all the differences between the means were significant. Product-moment correlations for related areas across instruments ranged from .15 to .66 and for unrelated areas from .03 to .14. Principal factor analysis with varimax rotation yielded three factors, namely, Arts, Science and Economy–Numbers.

scholarly journals Construct validation of Joubert's value oriëntation measure

1998 ◽  
Vol 24 (1) ◽  
Author(s):  
C. N. Hoelson ◽  
G. B. Stead
Keyword(s):  
South Africa ◽  
Factor Analysis ◽  
Construct Validity ◽  
Value Orientation ◽  
Principal Factor ◽  
Value Orientations ◽  
Validation Sample ◽  
Varimax Rotation ◽  
Disadvantaged Communities ◽  
First Time

The purpose of this research was to determine empirically the construct validity of Joubert's typology of value orientations in the rapidly changing social context in South Africa. The validation sample consisted of students from historically disadvantaged communities in South Africa who had registered for fulltime degree studies at a multi-campus university in South Africa for the first time. The construct validity of the typology was examined through submitting the items of each scale to a test of internal consistency. All of the 16 scales had alpha coefficients less than .43. Therefore, Joubert's theoretically derived Value Orientation measure had insufficient support for its construct validity in the sample used. A principal factor analysis with varimax rotation was performed and squared multiple correlations were employed as the initial communality estimates which were then iterated. The factor analysis produced only 4 correlations exceeding .30 and this fact in conjunction with the low squared multiple correlations suggested that the factors were not well defined. Opsomming Die doel van hierdie navorsing was om empirics die konstrukgeldigheid van Joubert se waarde orientasie tipologie in die vinnig veranderende Suid-Afrikaanse sosiale konteks te bepaal. Die geldigheid is getoets op 'n steekproef studente vanaf historiesafgeblewene gemeenskappe in Suid-Afrika wat vir die eerste keer vir voltydse graadstudies geregistreer het by 'n multikampus Universiteit in Suid-Afrika. Die konstrukgeldigheid van die tipologie is ondersoek deur die items van eike skaal te onderwerp aan 'n toets van interne konsekwentheid. Al 16 skale is gekenmerk deur alpha koeffisiente van minder as .43. Dus het Joubert se teoreties ontwikkelde Waarde Orientasie-instrument ongenoegsame konstrukgeldigheid getoon vir die huidige steekproef. 'n Hooffaktoranalise met varimaxrotasie is uitgevoer en gekwadreerde veelvuldige korrelasies is gebruik as die aanvanklike gemeenskaplike beramings wat daarna in die iterasies gebruik is. Die faktoranalise het slegs 4 korrelasies gelewer wat .30 oorskry het, en die feit met inagneming van die lae gekwadreerde veelvuldige korrelasies, suggereer dat die faktore nie goed gedefinieer is nie.

Use of principal factor analysis to generate a corn silage fermentative quality index to rank well- or poorly preserved forages

2015 ◽  
Vol 96 (5) ◽  
pp. 1686-1696 ◽  
Author(s):  
Antonio Gallo ◽  
Gianluca Giuberti ◽  
Sara Bruschi ◽  
Paola Fortunati ◽  
Francesco Masoero
Keyword(s):  
Factor Analysis ◽  
Quality Index ◽  
Principal Factor ◽  
Corn Silage ◽  
Principal Factor Analysis

A robust version of principal factor analysis

COMPSTAT ◽  
2000 ◽  
pp. 385-390 ◽  
Author(s):  
G. Pison ◽  
P. J. Rousseeuw ◽  
P. Filzmoser ◽  
C. Croux
Keyword(s):  
Factor Analysis ◽  
Principal Factor ◽  
Principal Factor Analysis ◽  
Robust Version

Revision of the Brief Index of Self-Actualization

1998 ◽  
Vol 87 (1) ◽  
pp. 115-125 ◽  
Author(s):  
John R. Sumerlin ◽  
Charles M. Bundrick
Keyword(s):  
Factor Analysis ◽  
Principal Factor ◽  
Oblique Rotation ◽  
Principal Factor Analysis ◽  
Factor Loadings ◽  
Self Actualization

Items from the 40-item Brief Index of Self-actualization were submitted to principal factor analysis with promax and oblique rotation ( N = 620). With eigenvalues greater than 1 and factor loadings of .40 or higher, 32 items were retained as four factors, without overlap. A revised Brief Index of Self-actualization is presented as an improved measure of constructs underlying Abraham Maslow's description of a self-actualizing person.

An approach to the genesis of palygorskite in a Neogene-Quaternary continental basin using principal factor analysis

Clay Minerals ◽  
1995 ◽  
Vol 30 (3) ◽  
pp. 225-238 ◽  
Author(s):  
C. Sánchez ◽  
E. Galán
Keyword(s):  
Factor Analysis ◽  
Chemical Composition ◽  
Statistical Treatment ◽  
Principal Factor ◽  
Quaternary Sediments ◽  
Central Spain ◽  
Principal Factor Analysis ◽  
Lacustrine Basin ◽  
Marginal Areas ◽  
Continental Basin

AbstractThe Carrión lacustrine basin (≈10 km2), central Spain, is filled with Neogene-Quaternary sediments (20–25 m thick) rich in palygorskite. Two clay units of ∼15 m thick are of particular interest in the basin. The lower one contains over 75% phyllosilicates (palygorskite up to 90%, smectites and illite) in marginal areas (facies A), and it is laterally bound by a distal facies (B) also rich in clay minerals (smectites and illite, and some palygorskite) and gypsum, and includes dolomitic marl intercalations. The composition at the top is primarily marly, with some gypsum (C). The upper clay unit, mainly clay-size material, (D) is rich in smectites, palygorskite and sepiolite, and contains carbonate intercalations near the top. A statistical treatment of the mineralogical and chemical composition data from 120 samples, using principal factor analysis, suggests that: (a) illite and smectite are detrital in origin; (b) palygorskite was formed by transformation of illite and smectite involving reaction with Mg; and (c) sepiolite was a neoformation product favoured by evaporation of silica- and Mg-bearing waters.

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