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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
171

The Other-Race Effect and its Influences on the Development of Emotion Processing

Monesson, Alexandra 01 January 2009 (has links) (PDF)
The theory of perceptual narrowing posits that the ability to make perceptual discriminations is very broad early in development and subsequently becomes more specific with perceptual experience (Scott, Pascalis, & Nelson, 2007). This leads to the formation of biases (Pascalis et al., 2002; 2005; Kelly et al., 2007), including the other-race effect (ORE). Behavioral and electrophysiological measures are used to show that by 9-months-of-age, infants exhibit a decline in ability to distinguish between two faces from another race compared to two faces from within their own race. Significant differences in the P400 component revealed a dampening of response to other-race compared to same-race faces for 9-month-olds only. More negative N290 amplitudes in response to happy compared to sad faces were found for 5-month-olds only. Nine-month-olds did not show different responses based on emotion, indicating that race was interfering with the processing of emotion.
172

Perceptual Grouping by Closure in Visual Working Memory

Neira, Sofia 01 January 2016 (has links)
Research on visual working memory (VWM) suggests a capacity limit of three to four objects (Luck & Vogel, 1997), but recent studies on the fidelity of VWM capacity for objects indicates that informational bandwidth, which can vary with factors like complexity and amenability to perceptual grouping, can interact with this capacity (Brady, Konkle & Alvarez, 2011). For example, individual features can be grouped into objects for an added benefit in VWM capacity (Xu, 2002). Along these lines, the Gestalt principles of proximity and connectedness have been shown to benefit VWM, although they do not influence capacity equally (Xu 2006; Woodman, Vecera & Luck, 2003). Closure, which has not been investigated for its influence in VWM capacity, is similar to connectedness and proximity as it promotes the perception of a coherent object without physical connections. In the current experiment, we evaluated whether closure produces similar or greater VWM capacity advantages compared to proximity by having participants engage in a change detection task. Four L-shaped features were grouped in tilted clusters to either form an object (closure condition) or not (no-object condition), with a set size of two (8 L features), four (16 L features), or six clusters (24 L features). Following a brief mask (1000 ms), the orientation of one cluster was changed (tilted 25 or -25 degrees) on half the trials. Our results indicate that there was no difference in accuracy or reaction time for the perceptual grouping conditions of closure/no-object, although we did find a main effect for set size and change conditions. Overall, it seems that grouping by closure provides no further advantages to VWM capacity than proximity; however, more experiments need to be conducted to solidify the findings of the current experiment.
173

Perception of Facial Expressions in Social Anxiety and Gaze Anxiety

Necaise, Aaron 01 January 2016 (has links)
This study explored the relationship between gaze anxiety and the perception of facial expressions. The literature suggests that individuals experiencing Social Anxiety Disorder (SAD) might have a fear of making direct eye contact, and that these individuals also demonstrate a hypervigilance towards the eye region. It was thought that this increased anxiety concerning eye contact might be related to the tendency of socially anxious individuals to mislabel emotion in the faces of onlookers. A better understanding of the cognitive biases common to SAD could lead to more efficient intervention and assessment methods. In the present study, the Depression Anxiety Stress Scale-21 (DASS-21) and the Social Phobia and Anxiety Inventory-23 (SPAI-23) were used to measure social anxiety, depression, and overall distress. These forms allowed us to separate participants who reported high socially anxious and depressive traits from those in the normal range. We then compared anxiety concerning mutual eye contact as measured by the Gaze Anxiety Rating Scale (GARS) to performance on a facial recognition task. Performance was measured as recognition accuracy and average perceived intensity of onlooker expression on a scale of 1-5. A linear regression analysis revealed that higher GARS scores were related to higher perceived intensity of emotion by socially anxious individuals. An exploratory correlation analysis also revealed that higher gaze anxiety was related to lower accuracy at identifying neutral emotions and higher accuracy at identifying angry emotions. While past research has demonstrated these same biases by socially anxious individuals, gaze anxiety had not been explored extensively. Future research should investigate gaze anxiety’s role as a moderating variable.
174

Hebrew And Computer-Mediated Communication: The Effects Of A Language Manipulation On Perception, Identity, And Preservation

Nir, Tamar 01 January 2016 (has links)
This study aimed to explore the ways in which Hebrew is currently being manipulated online through a linguistic deviation called Fakatsa. In this study, participants were asked to rate random statements of frivolous or serious topics in either standard grammatical Hebrew or Fakatsa Hebrew conditions on specific judgment values. It was hypothesized that participants would rate the Fakatsa writer negatively on certain characteristics, such as intelligence, education, religiosity, and nationalism and positively on other characteristics, such as femininity and creativity. Twenty-four participants completed this experiment. Results showed that participants responded as expected for certain negative attributes typical of Fakatsa and deviations to computer-mediated communication and did not respond as expected for any the positive attributes typical of Fakatsa. The results showed that fluent Hebrew speakers viewed users of the Fakatsa manipulation differently than users of standard Hebrew and may suggest personal biases and perceptions when encountering computer-mediated communication.
175

The Effect of Social Media on Sexual Cognitions and Behaviors

Duarte, Joshua 01 January 2016 (has links)
Pop culture and social media have become a prime source of entertainment and communication. The current study focuses on the potential effects of consuming this form of media and how it affects our sexual cognitions and behaviors. A sample of nine hundred and two university students were given self-reporting questionnaires concerning demographics, sexual cognitions, and exposure to sexual content in music. An analysis of music artist’s posts on social media was also performed. It was hypothesized that artists who have sexual content published in their work will also have the same amount of sexual content on social media. However, there were no significant correlations found between these sources. This study found that exposure to sexual content on social media could increase the chances of acquiring certain sexual cognitions. The current study also aimed to analyze the common characteristics of artist’s that post a higher frequency of sexual content on social media. This study found that female artists tend to post more sexual content on social media compared to male artists, as well as music groups containing both male and female artists.
176

A Measurement of Campus Presence: The Cognitive Link Between Campus Engagement and Positive Outcomes in College Students

Kleiman, Daniel M 01 January 2017 (has links)
Prior research has shown that positive psychological states and attitudes are known outcomes in students who are engaged on their college campus. Although many studies prove this to be evident, literature lacks examination between these two variables. The purpose of the current study was to find a cognitive link between student engagement and the measured outcomes of self-esteem, college self-efficacy, college affiliation, and levels of optimism/pessimism. The study proposed that there is a process of developing an internal sense of presence on campus, which occurs in those students that are actively engaged in activities outside of the classroom. Individual personality traits are additionally measured as a variable for tendencies of involvement. Measurements of presence level in students were analyzed by administering a Campus Presence Scale, modified from the Witmer & Singer Presence Scale. The study subscales that examine levels of student engagement and its outcomes were measured in an online questionnaire format via Qualtrics. A total of 371 students at the University of Central Florida participated in the study. This study hypothesized that students who spend more time on campus engaged in co-curricular activities would display higher levels of presence development. The study also sought a flow of development in these processes, hypothesizing that campus presence mediates the actions in which students engage and their psychological well-being and attitudes towards their institution. Analyses in SPSS were used to examine these relationships. Results indicated that presence is significantly correlated with higher student self-esteem, self-efficacy, college affiliation, and optimism. Results also showed that those involved with student organizations and those who regularly attend campus events are significantly more extroverted and have higher levels of presence, college affiliation and self-efficacy
177

Flocks, Swarms, Crowds, and Societies: On the Scope and Limits of Cognition

Neemeh, Zachariah A 01 January 2017 (has links)
Traditionally, the concept of cognition has been tied to the brain or the nervous system. Recent work in various noncomputational cognitive sciences has enlarged the category of “cognitive phenomena” to include the organism and its environment, distributed cognition across networks of actors, and basic cellular functions. The meaning, scope, and limits of ‘cognition’ are no longer clear or well-defined. In order to properly delimit the purview of the cognitive sciences, there is a strong need for a clarification of the definition of cognition. This paper will consider the outer bounds of that definition. Not all cognitive behaviors of a given organism are amenable to an analysis at the organismic or organism-environment level. In some cases, emergent cognition in collective biological and human social systems arises that is irreducible to the sum cognitions of their constituent entities. The group and social systems under consideration are more extensive and inclusive than those considered in studies of distributed cognition to date. The implications for this ultimately expand the purview of the cognitive sciences and bring back a renewed relevance for anthropology and introduce sociology on the traditional six-pronged interdisciplinary wheel of the cognitive sciences.
178

Do Different Personality Types Differ in Level of Confirmation Bias?

Long, Allison J 01 January 2017 (has links)
The purpose of this research study was to determine if there is a correlation between personality type and level of confirmation bias. Confirmation bias is the idea that people are more likely to agree with opinions already similar to their own and they will actively seek out that opinion. The NEO Five Factor Inventory was administered to determine the subjects’ levels in openness to experience, conscientiousness, extraversion, agreeableness, and neuroticism. The Confirmation Inventory was administered to determine the level of confirmation bias. It was predicted that people high in openness will score low in confirmation bias; people who score high in conscientiousness will score high in confirmation bias; high levels of agreeableness will result in low scores of confirmation bias; and the final hypothesis is people who score high in neuroticism will also score high levels of confirmation bias. It is predicted that a person's level of extraversion will not affect their level of confirmation bias. The low participant number caused non-significant results. Overall, no significant differences were found that illuminate the relationship between confirmation bias and personality. None of the comparisons were found to be significant at the .01 level.
179

Online Product Reviews: Effects of Star Ratings and Valence on Review Perception among Those High and Low in Need for Cognition

Schreck, Jacquelyn L 01 January 2018 (has links)
The Internet is becoming the main source for various tasks, from learning, to working, and shopping. There are many websites one can use to shop. Almost all stores have a website from which you can order anything you might want. As online shopping becomes more prominent, it is important to understand the effects of the Internet and its product reviewers and, specific to this study, consumer decision making. This study seeks to understand the effect of star ratings and valence on review perception between the different cognitive levels of individuals. Recognition review perception, and intent to purchase were being measured. Results showed that need for cognition did have an effect on accuracy of recognition and perceived valence. Need for cognition and congruency as well as actual valence had an effect on perceived valence. Need for cognition, actual valence, and congruency all had an effect on purchase intention. This research is important because it is relevant to a growing trend around the world. Technology is already integrated into nearly everyone’s lives and it is only going to more so as we continue to evolve. Just as it is becoming more common for people to receive education from online institutions, and for employers to use more Internet based applications, it is only natural consumers will continue the trend of purchasing items online. Learning the social and cognitive influences of online reviews on perception and purchasing intentions is something everyone needs to be aware of.
180

The Development of Perceptions of Facial Attractiveness

Vingilis-Jaremko, Larissa 10 1900 (has links)
<p>There is strong agreement among adults both within and across cultures as to which faces are attractive (Langlois et al., 2000), and these perceptions can affect social interactions via the ‘beauty is good’ stereotype (Dion, Berscheid, & Walster, 1972). Adults perceive faces that are symmetrical to be more attractive than faces that are less symmetrical (Perrett et al., 1999), and faces that approximate the population average to be more attractive than most other faces (Langlois & Roggman, 1990). I examined the development of the influence of symmetry and averageness on children’s judgments of facial attractiveness in the faces of children and adults. In the work presented in chapters 2 and 3, I presented children and adults with pairs of faces that had been transformed to be more symmetrical and less symmetrical (chapter 2) or closer and farther from their group average (chapter 3). On each trial, participants selected which face was more attractive from the pair. I found that symmetry did not influence 5-year-olds’ judgments of attractiveness, but it did influence 9-year-olds’ judgments of attractiveness although to a lesser extent than those of adults. I additionally found that averageness strongly influenced 5-yearolds’ attractiveness judgments, and the strength of the preference increased from age 5 to 9, and from age 9 to adulthood. These findings are the first demonstrations that symmetry and averageness influence attractiveness judgments prior to adolescence, and that they influence attractiveness judgments in children’s faces. To assess whether natural differences in face experience can affect how strongly averageness is preferred in different face categories, I tested children attending single-sex schools and expected averageness to influence attractiveness judgments more strongly in same-sex than opposite-sex faces of their own age (chapter 4). I did not find that pattern of results. Averageness might influence attractiveness judgments regardless of the age and sex of face because a minimum level of face experience could be adequate for attractiveness judgments based on a prototype and/or because of similarities among averages of different ages and sexes. Together, the findings of this thesis demonstrate that children assess facial attractiveness based on some of the same dimensions as do adults, but that children are more tolerant of deviations from averageness and symmetry. Developmental changes might reflect the refinement of a face prototype as experience with faces increase, increased visual sensitivity as the visual system develops, and/or increased salience of cues for mate choice after puberty.</p> / Doctor of Science (PhD)

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