Structural invariance of spatial Pythagorean hodographs

2002 ◽  
Vol 19 (6) ◽  
pp. 395-407 ◽  
Author(s):  
Rida T. Farouki ◽  
Mohammad al-Kandari ◽  
Takis Sakkalis
Keyword(s):  
Structural Invariance ◽  
Pythagorean Hodographs

Computer Reconstruction of the Cellular Architecture of the Daphnia Magna Optic Ganglion

1975 ◽  
Vol 33 ◽  
pp. 284-285
Author(s):  
E. R. Macagno ◽  
C. Levinthal
Keyword(s):  
Daphnia Magna ◽  
Genetic Background ◽  
Compound Eye ◽  
Synaptic Connectivity ◽  
Serial Sections ◽  
Cross Sectional ◽  
Small Crustacean ◽  
Optic Ganglion ◽  
Structural Invariance ◽  
High Degree

The optic ganglion of Daphnia Magna, a small crustacean that reproduces parthenogenetically contains about three hundred neurons: 110 neurons in the Lamina or anterior region and about 190 neurons in the Medulla or posterior region. The ganglion lies in the midplane of the organism and shows a high degree of left-right symmetry in its structures. The Lamina neurons form the first projection of the visual output from 176 retinula cells in the compound eye. In order to answer questions about structural invariance under constant genetic background, we have begun to reconstruct in detail the morphology and synaptic connectivity of various neurons in this ganglion from electron micrographs of serial sections (1). The ganglion is sectioned in a dorso-ventra1 direction so as to minimize the cross-sectional area photographed in each section. This area is about 60 μm x 120 μm, and hence most of the ganglion fit in a single 70 mm micrograph at the lowest magnification (685x) available on our Zeiss EM9-S.

Measurement Invariance Analysis of the Parental Stress Index

2019 ◽  
Vol 35 (6) ◽  
pp. 771-778 ◽  
Author(s):  
Bernhard Piskernik ◽  
Barbara Supper ◽  
Lieselotte Ahnert
Keyword(s):  
Measurement Invariance ◽  
Parental Stress ◽  
Stress Index ◽  
Factor Analyses ◽  
Confirmatory Factor Analyses ◽  
Mean Values ◽  
Confirmatory Factor ◽  
Structural Invariance ◽  
Parent Domain ◽  
Structural Levels

Abstract. While parenting research continues to compare similarities and differences in mothers’ and fathers’ behaviors based on mean values on the respective dimensions, measurement invariance as a prerequisite for these comparisons has seldom been assured. The present study thus subjected the well-known Parenting Stress Index (PSI), widely used in models of family functioning, to a rigorous measurement invariance analysis based on ( N = 214) Austrian couples with children younger than 3 years of age. We evaluated configural, metric, scalar, and uniqueness invariance on item and subscale levels, and tested for structural invariance of means and variances of the PSI parent and child domain by second-order confirmatory factor analyses. As a result, only measurement differences on the scalar levels affected the factor scores, though negligibly. On the structural levels, no differences were found on the PSI child domain across parents, but on the PSI parent domain, mothers reported more stress.

Retrospective Paternal and Maternal Parenting Styles in Greece, Italy, and Sweden

2018 ◽  
Vol 34 (6) ◽  
pp. 399-408
Author(s):  
Semira Tagliabue ◽  
Maria Giulia Olivari ◽  
Elisabeth Hertfelt Wahn ◽  
Katerina Maridaki-Kassotaki ◽  
Katerina Antonopoulou ◽  
...  
Keyword(s):  
Parenting Styles ◽  
Psychometric Characteristics ◽  
Perceived Parenting ◽  
Parental Roles ◽  
Maternal Parenting ◽  
Mixed Anova ◽  
Confirmatory Factor ◽  
Permissive Parenting ◽  
Assessment Techniques ◽  
Structural Invariance

Abstract. Discrepancies in perceived parenting and parental roles across European countries could be due to the use of different assessment techniques or due to mean level differences in the authoritative, authoritarian, or permissive parenting styles. The present study aimed to examine the psychometric characteristics of the Parenting Styles and Dimensions Questionnaire (PSDQ; Robinson, Mandleco, Olsen, & Hart, 1995 , 2001 ) in a sample of 225 Greek, 301 Italian, and 279 Swedish adolescents aged 16–19 years, who evaluated their father’s and mother’s parenting styles during their childhood. A confirmatory factor analysis (CFA), multigroup CFA, and modified version of the correlated uniqueness model were used to evaluate the structure and invariance of the scale across countries. Measurement and structural invariance was found in the 8-item authoritative scale and 6-item authoritarian scale. A mixed ANOVA (Country × Style × Role) showed that Swedish mothers scored lower than Italian or Greek mothers, and that, in the three countries, mothers were perceived as more authoritative than were fathers.

A Confirmatory Factor Analytic Study of Anxiety, Fear, and Behavioral Inhibition System Measures

2007 ◽  
Vol 28 (4) ◽  
pp. 179-187 ◽  
Author(s):  
Andrew J. Cooper ◽  
Adam M. Perkins ◽  
Philip J. Corr
Keyword(s):  
Trait Anxiety ◽  
Behavioral Inhibition ◽  
Discriminant Validity ◽  
Self Report ◽  
Behavioral Inhibition System ◽  
Reinforcement Sensitivity Theory ◽  
Factor Analytic ◽  
Confirmatory Factor ◽  
Structural Invariance ◽  
Fear And Anxiety

Abstract. Recent revisions to the reinforcement sensitivity theory (RST) of personality have highlighted the distinction between the emotions of fear and anxiety. These revisions have substantial implications for self-report measurement; in particular, they raise the question of whether separate traits of fear and anxiety exist and, if so, their interrelationship. To address this question, the current study used confirmatory factor analytic procedures to examine the convergent and discriminant validity of measures of trait anxiety, fear, and the behavioral inhibition system (BIS). We also examined measurement and structural invariance across gender in 167 males and 173 females who completed the Spielberger State-Trait Anxiety Inventory (STAI), the Carver and White BIS Scale, and the Fear Survey Schedule (FSS). The findings suggested that trait anxiety and the BIS scale are relatively distinct from Tissue Damage Fear (FSS). Further, the final model showed measurement and structural invariance across gender. The implications of the results for future self-report assessment in RST research are discussed.

On the power of tests for superexogeneity and structural invariance

1996 ◽  
Vol 72 (1-2) ◽  
pp. 151-175 ◽  
Author(s):  
Zacharias Psaradakis ◽  
Martin Sola
Keyword(s):  
Power Of Tests ◽  
Structural Invariance

scholarly journals Measurement and structural invariance of cognitive ability tests after computer-based training

2019 ◽  
Vol 93 ◽  
pp. 370-378 ◽  
Author(s):  
Michael Hermes ◽  
Frank Albers ◽  
Jan R. Böhnke ◽  
Gerrit Huelmann ◽  
Julia Maier ◽  
...  
Keyword(s):  
Cognitive Ability ◽  
Computer Based Training ◽  
Cognitive Ability Tests ◽  
Ability Tests ◽  
Computer Based ◽  
Structural Invariance

scholarly journals Scale of adverse events associated to nursing practices: a psychometric study in Portuguese hospital context

2018 ◽  
Vol 26 ◽  
Author(s):  
Teresa Neves ◽  
Vitor Rodrigues ◽  
João Graveto ◽  
Pedro Parreira
Keyword(s):  
Adverse Events ◽  
Public Hospital ◽  
Hospital Setting ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Stable Factor ◽  
Hospital Units ◽  
Northern Regions ◽  
Structural Invariance ◽  
The Stability

Objective to contribute to the validation study of the Scale of Adverse Events associated with Nursing Practices in the hospital context. Method cross-sectional study, in public hospital units, in the central and northern regions of Portugal. The exploratory factor analysis of the Scale of Adverse Events associated to Nursing Practices was conducted with a sample of 165 nurses and the confirmatory factorial analysis was made with a sample of 685 nurses. Reliability, internal consistency and construct validity were estimated. The invariance of the model was evaluated in two subsamples to confirm the stability of the factorial solution. Results the global sample consisted of 850 nurses aged between 22 and 59, mostly licensed professionals. The model had a good overall fit in the subscales (Nursing Practices: χ2/df = 2.88, CFI = 0.90, GFI = 0.86, RMSEA = 0.05, MECVI = 3.30; Adverse Events: χ2/df = 4.62, CFI = 0.93, GFI = 0.95, RMSEA = 0.07, MECVI = 0.39). There was a stable factor structure, indicating strong invariance in the subscale Nursing Practices and structural invariance in the subscale Adverse Events. Conclusion the refined model of the Scale of Adverse Events associated with Nursing Practices revealed good fit and stability of the factorial solution. The instrument was adjusted to evaluate the perception of nurses about adverse events associated with health care, precisely nursing care, in the hospital setting.

scholarly journals Further evidence for the structure of the Resilience Scale in portuguese language countries: An invariance study with brazilian and portuguese adolescents

Psicologia ◽  
2016 ◽  
Vol 30 (2) ◽  
pp. 33-46
Author(s):  
Paulo Dias ◽  
Irene Cadime ◽  
Paulo Castelar Perim
Keyword(s):  
Factor Analysis ◽  
Factor Structure ◽  
Cross Cultural ◽  
Short Version ◽  
Resilience Scale ◽  
Confirmatory Factor ◽  
Best Fitting ◽  
Structural Invariance ◽  
The One ◽  
Portuguese Adolescents

Especially since the last decades of the 20th century, research about resilience provided some insights into how people deal and overcome adversity in a positive way. Given the recent research history on this topic, discussion about theories and measures is still ongoing. In this study we aim to explore the structural invariance of the Wagnild and Young’s Resilience Scale (RS), one of the most widely used measures of resilience, across Portuguese and Brazilian adolescents. A sample of 969 adolescents with ages ranging between 13 and 18 years old completed the RS. A five- and a two-factor structure for the full RS version with 25 items and a one-factor structure for a RS short version, composed of 14 items, were tested using confirmatory factor analysis (CFA). After determining the best fitting structure, a multi-group CFA was performed to test the invariance of the instrument across the Portuguese and Brazilian samples.  The five- and two-factor structures for the full version revealed a poor fit. The one-factor structure revealed a good fit in both samples. Moreover, evidence for the partial measurement invariance of the short version across both samples was found. Our results indicate that the RS short version can be used for cross-cultural studies of resilience in both countries and that the five- and two-factor structures might be inadequate for comparison purposes.

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