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PROFILE
I am a Human-Computer Interaction researcher with a particular interest in social computing and online collaboration. I'm excited about developing knowledge and creating computer systems that facilitate productive cooperation, promote healthy socialization, and support community diversity.
I am also an experienced lecturer and mentor, having a decade of practice with academic courses related to Information Systems' engineering, such as Introduction to Programming and Full Stack Web Development, Data Analytics, and Human-Computer Interactions.
Please, check my CV for more information.
NiginiOliveira-CV-March2021.pdfSelected publications
Selected publications
CHI'2021
Do Cross-Cultural Differences in Visual Attention Patterns Affect Search Efficiency on Websites?
Do Cross-Cultural Differences in Visual Attention Patterns Affect Search Efficiency on Websites?
Nigini Oliveira*, Amanda Baughan*, Tal August, Naomi Yamashita, Katharina Reinecke
(*) Joint first-authors
Prior work in cross-cultural psychology and neuroscience has shown robust variations in visual attention patterns. People from East Asian societies, in which a holistic thinking style predominates, have been found to attend to contextual information in scenes more than Westerners, whose tendency to think analytically expresses itself in greater attention to foreground objects. This paper applies these findings to website design, using an online study to evaluate whether Japanese (N=65) remember more and are faster at finding contextual website information than US Americans (N=84). Our results do not support this hypothesis. Instead, Japanese overall took significantly longer to find information than US participants—a difference that was exacerbated by an increase in website complexity—suggesting that Japanese may holistically take in a website before engaging with detailed information. We discuss implications of these findings for website design and cross-cultural research.
CHI2021-Baughan_Oliveira_August_Yamashita_Reinecke.pdfCSCW'2018
The Exchange in StackExchange: Divergences between Stack Overflow and its Culturally Diverse Participants
The Exchange in StackExchange: Divergences between Stack Overflow and its Culturally Diverse Participants
Nigini Oliveira, Michael Muller, Nazareno Andrade, Katharina Reinecke
StackExchange is a network of Question & Answer (Q&A) sites that support collaborative knowledge exchange on a variety of topics. Prior research found a significant imbalance between those who contribute content to Q&A sites (predominantly people from Western countries) and those who passively use the site (the so-called "lurkers"). One possible explanation for such participation differences between countries could be a mismatch between culturally related preferences of some users and the values ingrained in the design of the site. To examine this hypothesis, we conducted a value-sensitive analysis of the design of the StackExchange site Stack Overflow and contrasted our findings with those of participants from societies with varying cultural backgrounds using a series of focus groups and interviews. Our results reveal tensions between collectivist values, such as the openness for social interactions, and the performance-oriented, individualist values embedded in Stack Overflow’s design and community guidelines. This finding confirms that socio-technical sites like Stack Overflow reflect the inherent values of their designers, knowledge that can be leveraged to foster participation equity.
CSCW2018-Oliveira_Muller_Andrade_Reinecke.pdfNordiCHI'2016
Participation Differences in Q&A Sites Across Countries: Opportunities for Cultural Adaptation
Participation Differences in Q&A Sites Across Countries: Opportunities for Cultural Adaptation
Nigini Oliveira, Nazareno Andrade, Katharina Reinecke
While the success of online Question & Answer (Q&A) sites relies on user contributions, previous work has shown that the number of contributions varies between countries. What remains unknown is whether this is due to a few people contributing a lot, or whether highly represented countries have a higher percentage of users who are willing to contribute. In this paper, we investigate this question with the goal of identifying opportunities to equalize contributions between countries. Analyzing the data from StackOverflow and Superuser, two popular Q&A sites, we find that the percentage of contributing users significantly varies between 116 countries, and that these differences can be partly explained by a country's national culture and overall English proficiency. We discuss how specific design decisions on these sites, such as the competitive reward mechanism used to encourage contributions, could be changed to encourage currently passive people to contribute.
NordiCHI2016-Oliveira_Andrade_Reinecke.pdfGoogle Sites
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