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Details

  • Name

    Diana Machado Carvalho
  • Cluster

    Computer Science
  • Role

    External Research Collaborator
  • Since

    16th September 2019
Publications

2016

Usability evaluation of an entertainment platform by people with intellectual disabilities

Authors
Rocha, T; Carvalho, D; Gonçalves, R; Martins, J; Branco, F; Bessa, M;

Publication
2016 11TH IBERIAN CONFERENCE ON INFORMATION SYSTEMS AND TECHNOLOGIES (CISTI)

Abstract
In this paper it is presented a usability evaluation of an entertainment platform, well-known, YouTube. The main aim is to study how people with intellectual disabilities interact with the layout and uses their search field option. We intended to observe and analyze performance and satisfaction but also if the interface can give them autonomy on the search option. The results show that participants had a good experience with the interface, however cannot be autonomy with the search option.

2015

Interaction Paradigms Versus Age-Related User Profiles: an Evaluation on Content Selection

Authors
Carvalho, DCM; Bessa, MEC; Magalhaes, LGM; Carrapatoso, EMEM;

Publication
IEEE LATIN AMERICA TRANSACTIONS

Abstract
Novel input modalities such as touch, tangibles or gestures try to exploit human's innate skills rather than imposing new learning processes. However, despite the recent boom of different natural interaction paradigms, it hasn't been systematically evaluated how these interfaces influence a user's performance or whether each interface could be more or less appropriate when it comes to: 1) different age groups; and 2) different basic operations, as data selection, insertion or manipulation. This work presents the first step of an exploratory evaluation about whether or not the users' performance is indeed influenced by the different interfaces. The key point is to understand how different interaction paradigms affect specific target-audiences (children, adults and older adults) when dealing with a selection task. 60 participants took part in this study to assess how different interfaces may influence the interaction of specific groups of users with regard to their age. Four input modalities were used to perform a selection task and the methodology was based on usability testing (speed, accuracy and user preference). The study suggests a statistically significant difference between mean selection times for each group of users, and also raises new issues regarding the "old" mouse input versus the "new" input modalities.

2014

Different interaction paradigms for different user groups: an evaluation regarding content selection

Authors
Carvalho, D; Bessa, M; Magalhães, L;

Publication
Proceedings of the XV International Conference on Human Computer Interaction, Interacción '14, Puerto de la Cruz, Tenerife, Spain, September 10-12, 2014

Abstract
In recent years there has been a boom of different natural interaction paradigms, such as touch, tangible or gesture-based interfaces, that make better use of human's innate skills rather than imposing new learning processes. However, no work has been reported that systematically evaluates how these interfaces influence users' performance with regard to their level of digital literacy or even age. Furthermore, it is also important to understand the interaction paradigms' impact when performing basic operations, such as data selection, insertion and manipulation, and which interface could be the most efficient for each task. This paper reports the first step of an exploratory evaluation about the relationship between different interaction paradigms and specific target-audiences: dealing with a selection task. We conducted an experiment with 60 subjects to evaluate how different interfaces may influence the performance of specific groups of users. Four input modalities are evaluated in a selection task and results for these different user groups are reported in terms of performance, efficacy (error rate) and user preference. For each group of users, we determined there was a statistically significant difference between the mean time taken to complete the task in each interface. Also, the one input modality every user was accustomed with (the computer mouse) was the one that showed the most discrepancy regarding performance between the groups. We believe that this study raises new issues for future research. Copyright 2014 ACM.

2012

New interaction paradigms to fight the digital divide: a pilot case study regarding multi-touch technology

Authors
Diana Carvalho; Maximino Bessa; Lia Oliveira; Carlos Guedes; Emanuel Peres; Luís Magalhães

Publication
DSAI 2012 - DSAI 2012 - Software Development for Enhancing Accessibility and Fighting Info-exclusion, Douro region, Portugal

Abstract

2012

Developing a multi-touch Serious Game to fight the digital divide - The Portuguese ATM: a pilot case study

Authors
Diana Carvalho; Maximino Bessa; Lia Oliveira; Carlos Guedes; Emanuel Peres; Luís Gonzaga Magalhães

Publication
CISTI'2012 - 7ª Conferência Ibérica de Sistemas e Tecnologias de Informação, vol.1, no.2, pp.823-828, Madrid , Espanha

Abstract