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The application of sentiment analysis to a psychotherapy session : an exploratory study using four general-purpose lexicons

datacite.subject.fosCiências Sociais::Psicologiapt_PT
dc.contributor.advisorPires, António Augusto Pazo
dc.contributor.authorVeiga, Gonçalo Marmelo da Silva
dc.date.accessioned2020-01-31T16:52:25Z
dc.date.available2020-01-31T16:52:25Z
dc.date.issued2019-12-10
dc.descriptionDissertação de Mestrado apresentada no ISPA – Instituto Universitário para obtenção de grau de Mestre na especialidade de Psicologia Clínica.pt_PT
dc.description.abstractIn this study we explore the application of sentiment analysis to a complete and in-person psychotherapy session. Sentiment analysis is a text mining technique that allows for the analysis, interpretation, and visualization of textual data. We investigate how we can apply a lexicon-based approach to analyze clinical session data, using four general-purpose lexicons available within an open-source statistical programming language environment, R. We conducted our study by comparing the performance of four general-purpose lexicons to the performance of n = 52 human raters, using inter-rater reliability (IRR) and intraclass correlation (ICC) measurements. Our findings suggest there is low to moderate agreement between human ratings and lexicon generated ratings, depending on the lexicon used. There are some benefits in applying a lexicon-based sentiment analysis approach to psychotherapy session data, namely the way it efficiently processes and analyses data and allows for novel visualizations of psychotherapy data. We recommend further investigation into the application of sentiment analysis as a technique, focusing on the performance of specific-purpose lexicons. We also recommend further research into comparing the performance of lexicon-based approaches to text classification approaches to the analysis of psychotherapy data.pt_PT
dc.identifier.tid202349489pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.12/7372
dc.language.isoengpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.subjectSentiment analysispt_PT
dc.subjectLexicon-based approachpt_PT
dc.subjectTherapy session datapt_PT
dc.subjectDicionário de termospt_PT
dc.subjectAnálise de sentimentopt_PT
dc.subjectDados clínicos de psicoterapiapt_PT
dc.titleThe application of sentiment analysis to a psychotherapy session : an exploratory study using four general-purpose lexiconspt_PT
dc.typemaster thesis
dspace.entity.typePublication
rcaap.rightsopenAccesspt_PT
rcaap.typemasterThesispt_PT
thesis.degree.namePsicologiapt_PT

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