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Previous issue date: 2016-01-21 / Considering the role that facial expressions play in interpersonal relations, efforts have been
made in order to better understand this topic. However, there are still gaps concerning
research with adolescents. As this developmental stage is marked by interpersonal relations,
and as these are related to a better quality of life, this dissertation aimed to fulfill some of the
gaps in the topic. Two studies were conducted. Study I aimed to fill the gap concerning the
absence of an image database containing facial stimuli representing the six basic emotion
expressions encompassing the entire period of adolescence and its transition to the beginning
of adulthood. To this end, posed and spontaneous expressions of 31 teenagers and young adult
from 12-20 years (14 men, Mage = 17.4, SD = 2.7) were collected with the use of three
strategies: emotive scenarios, posed expressions, and reactions to visual stimuli. Two
thousand two hundred and seventy nine frames were captured. Expert judges (N = 3) filtered
the frames, thus leading to a total of 42 final frames (three for each basic emotion, and three
depicting neutral faces, equally divided between genders). These images were standardized
and after passing through a new panel of expert judges (N = 4), they have been validated, thus
composing the Youth Emotion Picture Set (YEPS). Since there is a lack of studies that
directly investigate the role of covariates in recognizing expressions, Study II aimed to
investigate the role the verbal IQ, pubertal development, and socialization in the accuracy of
recognition of expressions among adolescents. Participants were 90 adolescents and young
adults (44 males, Mage = 16.7, SD = 2.4) divided into four age groups: 12-14 (n = 23), 15-16
(n = 19), 17-18 (n = 24), and 19-20 years (n = 25). They were assessed with regard to verbal
IQ, number of friends, weekly interactions with friends, and level of pubertal development.
After that, they completed an experimental task in which they had to categorize the emotion
displayed in three different presentation speeds (200ms, 500ms, 1000ms). The facial stimuli
used were collected from the YEPS. Findings showed that number of interactions with friends
per week was inversely related to accuracy in recognizing anger and disgust. Verbal IQ was
significantly proportional to the accuracy of surprise, disgust, and anger. Pubertal
development was related to the recognition of expressions of happiness. This dissertation
resulted in the development of the YEPS, an instrument that can be used in studies exploring
emotions in adolescents or for clinical application purposes. Study II revealed that different
covariates influenced the recognition of emotion expressions. The covariates predicted
differently accuracy in emotion recognition, with none of them explaining it for all emotions
under investigation. / Por considerar a import?ncia do papel que as express?es faciais desempenham em rela??es
interpessoais, esfor?os t?m sido realizados para estudar o tema. Entretanto, ainda existem
lacunas referentes a pesquisas com o p?blico adolescente. Como esta etapa do ciclo vital ? um
per?odo no qual rela??es interpessoais passam a ter destaque estando relacionadas a uma
melhor qualidade de vida, esta disserta??o teve o objetivo de suprir algumas destas lacunas.
Para tanto, foram conduzidos dois estudos. O Estudo I objetivou preencher a lacuna referente
? aus?ncia de um banco de imagens que contenha est?mulos faciais que representem as seis
express?es b?sicas, englobando todo o per?odo da adolesc?ncia e sua transi??o para o in?cio da
vida adulta. Para tal, foram coletadas express?es posadas e espont?neas de 31 jovens de 12 a
20 anos (14 homens, Midade = 17,4, DP = 2,7). Tr?s estrat?gias foram usadas: cen?rios mentais,
express?es posadas e rea??es a est?mulos visuais. Foram captados 2279 frames que ap?s
passarem por processos de filtragem do pesquisador foram avaliados por tr?s ju?zes experts e
reduzidos a um total de 42 frames (tr?s para cada emo??o b?sica e tr?s para faces neutras,
igualmente divididos entre os g?neros). Estas imagens foram padronizadas e, ap?s terem
passado por mais um painel de quatro ju?zes, foram validadas constituindo assim o Youth
Emotion Picture Set (YEPS). Dado que existe uma car?ncia de estudos que investiguem
diretamente a relev?ncia de covari?veis no reconhecimento de express?es faciais, o Estudo II
teve como objetivo investigar o papel do QI verbal, do desenvolvimento p?bere e da
socializa??o poderiam ter na acur?cia do reconhecimento de express?es em adolescentes.
Participaram do estudo 90 adolescentes e jovens adultos (44 do sexo masculino, Midade = 16,7,
DP = 2,4) divididos em quatro grupos et?rios: 12-14 (n = 23), 15-16 (n = 19), 17-18 (n = 24) e
19-20 anos (n = 25). Eles tiveram seu QI verbal, quantidade de amigos, frequ?ncia de
intera??es semanais com amigos e o n?vel de desenvolvimento p?bere avaliados e realizaram
uma tarefa experimental na qual deveriam categorizar a emo??o apresentada nas imagens do
YEPS em tr?s velocidades (200ms, 500ms, 1000ms). Os resultados indicaram que a
quantidade de intera??es sociais por semana com amigos est? inversamente relacionada ?
acur?cia no reconhecimento de express?es de raiva e nojo. O QI verbal foi significantemente
proporcional a acur?cia da identifica??o de express?es de surpresa, nojo e raiva. O
desenvolvimento p?bere se relacionou ao reconhecimento de express?es de alegria. A partir
desta disserta??o, foi poss?vel desenvolver o YEPS, um instrumento que pode ser utilizado em
outras pesquisas ou em estudos de aplica??o cl?nica. Em rela??o ao Estudo II, foi poss?vel
identificar o modo como diferentes covari?veis operam no reconhecimento de express?es e
que, entre as covari?veis estudadas, n?o existiu uma que fosse capaz de influenciar a acur?cia
de todas as emo??es.
| Identifer | oai:union.ndltd.org:IBICT/oai:tede2.pucrs.br:tede/6511 |
| Date | 21 January 2016 |
| Creators | Novello, Bruno Martins |
| Contributors | Arteche, Adriane Xavier |
| Publisher | Pontif?cia Universidade Cat?lica do Rio Grande do Sul, Programa de P?s-Gradua??o em Psicologia, PUCRS, Brasil, Faculdade de Psicologia |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da PUC_RS, instname:Pontifícia Universidade Católica do Rio Grande do Sul, instacron:PUC_RS |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 2588426296948062698, 600, 600, 600, 2599381623216554467, 3411867255817377423 |
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