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Dispositional Optimism is Unidimensional or Bidimensional? the Portuguese Revised Life Orientation Test

Title
Dispositional Optimism is Unidimensional or Bidimensional? the Portuguese Revised Life Orientation Test
Type
Article in International Scientific Journal
Year
2012
Authors
Luisa Pedro
(Author)
Other
The person does not belong to the institution. The person does not belong to the institution. The person does not belong to the institution. Without AUTHENTICUS Without ORCID
Susana Marques
(Author)
Other
The person does not belong to the institution. The person does not belong to the institution. The person does not belong to the institution. View Authenticus page Without ORCID
Journal
Vol. 15 No. 3
Pages: 1259-1271
ISSN: 1138-7416
Indexing
Publicação em ISI Web of Science ISI Web of Science
PsycInfo
Scientific classification
FOS: Social sciences > Psychology
Other information
Authenticus ID: P-002-3N4
Abstract (EN): The aim of the study is to adapt and then discuss the appropriateness of the Life Orientation Test as a one or two dimension scale. The research includes two studies; one is composed of a sequential sample of 280 people with multiple sclerosis, 71% female, and another includes a convenience sample of 615 individuals from the community, 51.1% female. Because the construct is built upon a theoretical assumption that has one dimension, we examine the hypothesis of one or two factor solutions through confirmatory factor analysis, and the two-dimension solution premise demonstrates better adjustment for both samples. The other psychometric properties explored show appropriate results for the Portuguese sample, and similar to the original ones; the Test therefore seems appropriate for use in cross cultural studies. Based on our results, we discuss whether the questionnaire is a one or two dimension instrument, concluding that it appears appropriate to accept the recommendations of the original authors to use it as a one-dimensional tool and, when necessary, to use both dimensions.
Language: English
Type (Professor's evaluation): Scientific
Contact: jlpr@fpce.up.pt
Notes: <a href="http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS&DestLinkType=FullRecord&KeyUT= 000312437600034">Acesso à Web of Science</a> <br> <a href="http://www.scopus.com/record/display.url?eid=2-s2.0-84871246783&origin=resultslist">Acesso à Scopus</a>
No. of pages: 13
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