scholarly journals Peer Review #2 of "Factor structure of the Positive and Negative Affect Schedule (PANAS) in adult women with fibromyalgia from Southern Spain: the al-Ándalus project (v0.2)"

2016 ◽  
Author(s):  
MC Hankins
Keyword(s):  
Negative Affect ◽  
Peer Review ◽  
Factor Structure ◽  
Southern Spain ◽  
Positive And Negative Affect ◽  
Adult Women

scholarly journals Factor structure of the Positive and Negative Affect Schedule (PANAS) in adult women with fibromyalgia from Southern Spain: the al-Ándalus project

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e1822 ◽  
Author(s):  
Fernando Estévez-López ◽  
Manuel Pulido-Martos ◽  
Christopher J. Armitage ◽  
Alison Wearden ◽  
Inmaculada C. Álvarez-Gallardo ◽  
...  
Keyword(s):  
Negative Affect ◽  
Positive Affect ◽  
Factor Structure ◽  
Measurement Instrument ◽  
Southern Spain ◽  
Positive And Negative Affect ◽  
Adult Women ◽  
Cross Sectional ◽  
Correlated Factors ◽  
Best Fit

Background:Fibromyalgia is a syndrome characterized by the presence of widespread chronic pain. People with fibromyalgia report lower levels of Positive Affect and higher levels of Negative Affect than non-fibromyalgia peers. The Positive and Negative Affect Schedule (PANAS)–a widely used questionnaire to assess two core domains of affect; namely ‘Positive Affect’ and ‘Negative Affect’ –has a controversial factor structure varying across studies. The internal structure of a measurement instrument has an impact on the meaning and validity of its score. Therefore, the aim of the present study was to assess the structural construct validity of the PANAS in adult women with fibromyalgia.Methods:This population-based cross-sectional study included 442 adult women with fibromyalgia (age: 51.3 ± 7.4 years old) from Andalusia (Southern Spain). Confirmatory factor analyses were conducted to test the factor structure of the PANAS.Results:A structure with two correlated factors (Positive Affect and Negative Affect) obtained the best fit; S-B χ2= 288.49,df= 155,p< .001; RMSEA = .04; 90% CI of RMSEA = (.036, .052); the best fit SRMR = .05; CFI = .96; CAIC = −810.66, respectively.Conclusions:The present study demonstrates that both Positive Affect and Negative Affect are core dimensions of affect in adult women with fibromyalgia. A structure with two correlated factors of the PANAS emerged from our sample of women with fibromyalgia from Andalusia (Southern Spain). In this model, the amount of variance shared by Positive Affect and Negative Affect was small. Therefore, our findings support to use and interpret the Positive Affect and Negative Affect subscales of the PANAS as separate factors that are associated but distinctive as well.

The Factor Structure and Measurement Invariance of Positive and Negative Affect

2016 ◽  
Vol 32 (4) ◽  
pp. 265-272 ◽  
Author(s):  
Mohsen Joshanloo ◽  
Ali Bakhshi
Keyword(s):  
Negative Affect ◽  
Measurement Invariance ◽  
Factor Structure ◽  
Factor Model ◽  
Positive And Negative Affect ◽  
Cultural Groups ◽  
Invariance Testing ◽  
The Usa ◽  
Scalar Invariance ◽  
Gender Groups

Abstract. This study investigated the factor structure and measurement invariance of the Mroczek and Kolarz’s scales of positive and negative affect in Iran (N = 2,391) and the USA (N = 2,154), and across gender groups. The two-factor model of affect was supported across the groups. The results of measurement invariance testing confirmed full metric and partial scalar invariance of the scales across cultural groups, and full metric and full scalar invariance across gender groups. The results of latent mean analysis revealed that Iranians scored lower on positive affect and higher on negative affect than Americans. The analyses also showed that American men scored significantly lower than American women on negative affect. The significance and implications of the results are discussed.

scholarly journals Spanish Adaptation of the Morningness-Eveningness-Stability-Scale improved (MESSi)

2017 ◽  
Vol 20 ◽  
Author(s):  
Juan F. Díaz-Morales ◽  
Christoph Randler
Keyword(s):  
Negative Affect ◽  
Construct Validity ◽  
Factor Structure ◽  
Size Effects ◽  
Psychometric Evaluation ◽  
The Other ◽  
Positive And Negative Affect ◽  
Sleep Habits ◽  
Factorial Model ◽  
Subjective Level

AbstractThe aim of the present study was to conduct the preliminary adaptation of the Morningness-Eveningness-Stability-Scale improved (MESSi) to Spanish population, testing its factor structure and construct validity. Participants were 261 adults (65% women;M= 31.4,SD= 12.01) who filled out measures of Morningness-Eveningness (MESSi and CSM), sleep habits, personality traits, positive and negative affect, and subjective level of alertness during the day. Psychometric results supported a three factorial model with the factors Morning Affect, Eveningness and Distinctness (RMSEA = .072). The factors showed good internal consistence (α = 0.72–0.85). The pattern of correlations between MESSi and the other measures were in the expected direction (low to moderated size effects). Morning Affect was positively predicted by morning chronotype (R2= .64), Eveningness was negatively predicted by age and positively by evening chronotype (R2= .41), and Distinctness was negatively predicted by sex (women reported higher DI than men) and age (R2= .08). This study provides evidence for the factor structure of a new measure of Morningness-Eveningness based on a rigorous psychometric evaluation.

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