A numerical taxonomic study of the Mallophagan genera Cummingsiella (=Quadraceps),Saemundssonia (Ischnocera: Philopteridae), and Austromenopon (Amblycera: Menoponidae) from alcids (Aves: Charadriiformes) of the northwest Atlantic with reference to host–parasite relationships

1977 ◽  
Vol 55 (11) ◽  
pp. 1788-1801 ◽  
Author(s):  
Eldon S. Eveleigh ◽  
Hiroshi Amano
Keyword(s):  
Principal Axis ◽  
Diagnostic Value ◽  
Morphological Characters ◽  
Northwest Atlantic ◽  
Phenetic Relationships ◽  
Principal Axis Factor Analysis ◽  
Species Groups ◽  
Numerical Taxonomic Study ◽  
Host Parasite ◽  
Principal Axis Factor

Specimens of Cummingsiella, Saemundssonia, and Austromenopon recovered from the alcids of the northwest Atlantic were analyzed using the techniques of numerical taxonomy. Twenty-one morphological characters common to both sexes plus four genital characters in the males were measured and used in the analyses. Principal axis factor analysis (PAFA) and four clustering techniques were used to determine the phenetic relationships at various taxonomic levels.The results supported the familial and generic classifications established by conventional taxonomists. The diagnostic value of genital characters at generic and specific levels were evaluated. The results from the analysis of each genus are presented and compared with existing classifications. With the exception of Austromenopon, the species groups formed within each genus were very similar for both sexes. Host–parasite relationships based on parasite interrelationships were investigated.

The Hopelessness Scale: A Factor Analysis

2007 ◽  
Vol 100 (2) ◽  
pp. 375-378 ◽  
Author(s):  
Maurizio Pompili ◽  
Roberto Tatarelli ◽  
James R. Rogers ◽  
David Lester
Keyword(s):  
Factor Analysis ◽  
Principal Axis ◽  
Factor Model ◽  
Psychiatric Patients ◽  
Confirmatory Factor ◽  
Beck Hopelessness Scale ◽  
Principal Axis Factor Analysis ◽  
Correlated Factors ◽  
Principal Axis Factor

A confirmatory factor analysis of the Beck Hopelessness Scale in a sample of 340 Italian students did not support the 3-factor model reported for previous samples of psychiatric patients. A follow-up principal axis factor analysis yielded two interpretable correlated factors, suggesting that the structure of the scale may differ across clinical and nonclinical groups and as a function of nationality.

Stability over Age and Sex of Children's Responses to Embedded Figures Test

1987 ◽  
Vol 64 (2) ◽  
pp. 399-406 ◽  
Author(s):  
Robert C. Hardy ◽  
John Eliot ◽  
Kenneth Burlingame
Keyword(s):  
Factor Analysis ◽  
Principal Axis ◽  
Relevant Factor ◽  
Embedded Figures Test ◽  
Stable Factor ◽  
Embedded Figures ◽  
Principal Axis Factor Analysis ◽  
Similar Factor ◽  
Age And Sex ◽  
Principal Axis Factor

240 children in Grades K to 4 were administered the entire Children's Embedded Figures Test to determine whether similar factor structures are obtained from samples of different sex and age as well as when the population is randomly split. Data were analyzed by principal axis factor analysis and relevant factor structures were compared using Veldman's 1967 program “Relate”. There was one stable factor which was consistent across sex and accounted for about 19% of the variance. Results were inconsistent across grades and indicated a possible lack of agreement of factor structures.

scholarly journals Musical Activity and Well-being

2018 ◽  
Vol 35 (4) ◽  
pp. 454-474 ◽  
Author(s):  
Amanda E. Krause ◽  
Jane W. Davidson ◽  
Adrian C. North
Keyword(s):  
Principal Axis ◽  
Quantitative Measure ◽  
Well Being ◽  
Future Research ◽  
Music Participation ◽  
Musical Activity ◽  
Self Actualization ◽  
Principal Axis Factor Analysis ◽  
And Coping ◽  
Principal Axis Factor

A relationship between participation in musical activity and well-being has frequently been observed in recent research reports. Of these, some propose various well-being-related correlates of musical participation, but the varying samples and foci leave researchers without a reasoned appraisal of these correlates or a data-driven categorization of them. To address this lacuna, the current research reviewed of existing literature, identifying 562 benefits of well-being benefits perceived to be associated with musical participation. These items were used as the basis for developing a new quantitative measure to evaluate the perceived benefits of well-being arising from music participation. Principal axis factor analysis of data using this new, 36-item measure identified five discrete dimensions: mood and coping, esteem and worth, socialization, cognition, and self-actualization. The development of this well-being measure addresses a gap in the research and provides a tool for future research concerning musical participation.

An Examination of Dimensions of Psychological Empowerment Scale for Service Employees

2005 ◽  
Vol 97 (2) ◽  
pp. 667-672 ◽  
Author(s):  
Murat Hancer ◽  
R. Thomas George ◽  
Beomcheol (Peter) Kim
Keyword(s):  
Factor Structure ◽  
Principal Axis ◽  
Psychological Empowerment ◽  
Factorial Structure ◽  
Factor Solution ◽  
Service Employees ◽  
Principal Axis Factor Analysis ◽  
The Usa ◽  
The Common ◽  
Principal Axis Factor

In the present study the dimensions and factorial structure of the Psychological Empowerment Scale for a sample of 173 restaurant service employees from 20 restaurants in the USA were analyzed, using principal axis factor analysis. The analysis indicated a two-factor solution for the scale with Cronbach α of .91 and .89. These factors were labeled Attitude and Influence and accounted for approximately 63% of the common variance. This differed from the original four-factor structure of Spreitzer and in two studies by Fulford and Enz in 1995 and by Hancer and George in 2003, a three-factor structure. Implications for research and recommendations are presented.

A Dimensional Analysis of the Yale-Brown Obsessive Compulsive Scale

1992 ◽  
Vol 70 (1) ◽  
pp. 239-240 ◽  
Author(s):  
William Fals-Stewart
Keyword(s):  
Factor Analysis ◽  
Dimensional Analysis ◽  
Principal Axis ◽  
Obsessive Compulsive ◽  
Principal Axis Factor Analysis ◽  
Promax Rotation ◽  
Principal Axis Factor

A principal axis factor analysis with a Promax rotation was performed on the Yale-Brown Obsessive Compulsive Scale. Although the scale has separate obsession and compulsion indices, only one factor was extracted. The psychometric implications of this finding are discussed.

An Involvement Profile of Division I Women’s Basketball Spectators

1997 ◽  
Vol 11 (3) ◽  
pp. 234-249 ◽  
Author(s):  
Deborah L. Kerstetter ◽  
Georgia M. Kovich
Keyword(s):  
Principal Axis ◽  
Consumer Involvement ◽  
Division I ◽  
Behavioral Characteristics ◽  
Oblique Rotation ◽  
Secondary Purpose ◽  
Women's Basketball ◽  
Principal Axis Factor Analysis ◽  
The Relationship ◽  
Principal Axis Factor

The primary purpose of this study was to substantiate the multidimensionality of the involvement construct in a college sport context as measured · by the Consumer Involvement Profile (IP) instrument. A secondary purpose was to examine the relationship between individual spectators' sociodemographic and behavioral characteristics and involvement. A principal axis factor analysis, using an oblique rotation, determined that two involvement dimensions with eigenvalues greater than 1.OO and accounting for 63% of the variance existed. MÁNOVA and ÁNOVA procedures revealed a significant relationship (.05 level using the Scheffe criterion) between involvement and five independent variables. The multidimensional nature of the involvement construct was substantiated but did not duplicate earlier work by numerous authors. The relationships documented via the ANOVA procedure also challenged earlier work. Further research using the IP instrument with sports spectators would enhance our understanding of their involvement profile.

Factorial Validity of a Referral Preference Rating Scale

1981 ◽  
Vol 41 (4) ◽  
pp. 1265-1270
Author(s):  
Nettye Brazil ◽  
John H. Pollock
Keyword(s):  
High School Teachers ◽  
Principal Axis ◽  
Rating Scale ◽  
Classroom Teachers ◽  
Classroom Behaviors ◽  
School Teachers ◽  
Preference Rating ◽  
Principal Axis Factor Analysis ◽  
Disruptive Classroom Behaviors ◽  
Principal Axis Factor

The validity of the Referral Preference Rating Scale (RPRS) was studied for a sample of 294 high school teachers. The teachers responded to a 50 item four-level Liker-type rating scale. A principal axis factor analysis with a varimax rotation disclosed four behavior categories of concern to teachers. The categories of behavior which interfered with classroom teaching were related to physical aggression, interruptions of class attendance, lack of readiness to become involved in a task, and inappropriate verbal behavior. It is concluded that the Referral Preference Rating Scale identified the main concerns of classroom teachers at the secondary level and clustered these concerns in terms of the most disruptive classroom behaviors.

Leaf epidermal microcharacters of the Old World species of Lotus (Leguminosae: Loteae) and their systematic significance

2003 ◽  
Vol 51 (4) ◽  
pp. 459 ◽  
Author(s):  
Sebastián A. Stenglein ◽  
Marta N. Colares ◽  
Ana M. Arambarri ◽  
María C. Novoa ◽  
Claudia E. Vizcaíno ◽  
...  
Keyword(s):  
Morphological Characters ◽  
Data Matrix ◽  
Group Method ◽  
Old World ◽  
Pair Group ◽  
Phenetic Relationships ◽  
Close Relationship ◽  
Species Groups ◽  
Phylogenetic Hypotheses ◽  
Epidermal Features

Some perennial species of Lotus L. (Leguminosae: Loteae) from the Old World constitute an important forage resource. The epidermal microcharacters of 15 species belonging to the Old World Lotus angustissimus L., L. corniculatus L., L. creticus L. and L. peregrinus L. groups were described to compute the phenetic relationships, and to compare these results with previous classifications and phylogenetic hypotheses. Data on epidermal cells, stomata, stomatal indeces and trichomes were recorded and summarised in tables and illustrations. To test the taxonomic value of epidermal features and to establish the phenetic relationships, two numerical analyses were performed. Phenograms by the unweighted pair-group method (UPGMA) of clustering were generated. Results of the numerical analysis using a basic data matrix (15 operational taxonomic units × 15 epidermal characters) suggested that epidermal characteristics make it possible to establish species' and species groups' relationships; however, they were not totally coincident with previous classifications. An additional analysis using epidermal characters plus other morphological characters from leaves, flowers, fruits and seeds led to establish species' and species groups' relationships. Results generated by the latter analysis demonstrated that epidermal traits, together with other characters, are useful and informative for testing species clustering. Phenetic results coincide with earlier classifications and chromosome-number studies and accord well with a previous phylogenetic hypothesis in showing the close relationship among species of the Old World Lotus groups included in this study.

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