Juan A. Hernández
University of La Laguna
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Featured researches published by Juan A. Hernández.
Emotion | 2010
Inmaculada León; José M. Díaz; Manuel de Vega; Juan A. Hernández
In this study, participants read stories describing emotional episodes with either a positive or negative valence (Experiment 1). Following each story, participants were exposed to short sentences referring to the protagonist, and the event-related potential (ERP) for each sentences last word was recorded. Some sentences described the protagonists emotion, either consistent or inconsistent with the story; others were neutral; and others involved a semantically anomalous word. Inconsistent emotions were found to elicit larger N100/P200 and N400 than consistent emotions. However, when participants were exposed to the same critical sentences in a control experiment (Experiment 2) in which the stories had been removed, emotional consistency effects disappeared in all ERP components, demonstrating that these effects were discourse-level phenomena. By contrast, the ordinary N400 effect for locally anomalous words in the sentence was obtained both with and without story context. In conclusion, reading stories describing events with emotional significance determines strong and very early anticipations of an emotional word.
Journal of Cognitive Neuroscience | 2014
Manuel de Vega; Inmaculada León; Juan A. Hernández; Mitchell Valdés; Iván Padrón; Evelyn C. Ferstl
Some studies have reported that understanding concrete action-related words and sentences elicits activations of motor areas in the brain. The present fMRI study goes one step further by testing whether this is also the case for comprehension of nonfactual statements. Three linguistic structures were used (factuals, counterfactuals, and negations), referring either to actions or, as a control condition, to visual events. The results showed that action sentences elicited stronger activations than visual sentences in the SMA, extending to the primary motor area, as well as in regions generally associated with the planning and understanding of actions (left superior temporal gyrus, left and right supramarginal gyri). Also, we found stronger activations for action sentences than for visual sentences in the extrastriate body area, a region involved in the visual processing of human body movements. These action-related effects occurred not only in factuals but also in negations and counterfactuals, suggesting that brain regions involved in action understanding and planning are activated by default even when the actions are described as hypothetical or as not happening. Moreover, some of these regions overlapped with those activated during the observation of action videos, indicating that the act of understanding action language and that of observing real actions share neural networks. These results support the claim that embodied representations of linguistic meaning are important even in abstract linguistic contexts.
Cognition & Emotion | 1998
Inmaculada León; Juan A. Hernández
We aimed to examine the differences between appraisal and attribution as regards their capacity to predict emotions. More specifically, we hoped to test the hypothesis, derivedfrom the model of Lazarus and Smith(1988), that appraisals predictive potential increases with the subjects personal involvement in the events. The same is not true of attributions, which are probably determined more by implicit theories concerning such events than by the personal significance they might hold. Subjects were required to evaluate an episode relating either to them directly or to a fictitious character. The information in the episode was manipulated to induce certain attributions and appraisals. Following the evaluation, the subject was asked to report on his/her emotions (in the former case) or to infer those of the character. Anger andguilt were chosenas the emotions to be studied. The data, analysed using causal analysis techniques, revealed that appraisal was superior to attribution in terms of predictive ability...
international conference on advanced learning technologies | 2010
Norena Martin-Dorta; Isabel Sanchez-Berriel; Miguel Bravo; Juan A. Hernández; Jose Luis Saorin; Manuel Contero
Recent studies have brought attention to the pedagogical potential of mobile devices, and various experiments have tested tools in handheld devices, indicating that they strengthen and support learning in different fields. The purpose of the work presented in this paper was to design a 3D construction mobile game for 3D spatial visualization training, with the aim of familiarizing users with a 3D environment and improving their understanding of the 2D-3D relationship. This paper describes the architecture of the system that we developed, which includes several different applications: (a) a mobile game played on touch screen devices to permit students to solve exercises about building models with unit-sized cubes in a 3D environment, (b) a PC application, to permit the teacher to design exercises and manage users, and (c) a server application and a database to collect and manage data. The J2ME Mobile 3D Graphics library is used and development is done in Netbeans. Satisfaction questionnaires and observation records were kept of work done by the users in order to evaluate the mobile game. The results show a high degree of satisfaction with the game and that users realize how useful this game can be for the proposed aims.
Psychology Crime & Law | 2010
Ana M. Martín; Bernardo Hernández; Estefanía Hernández-Fernaud; José L. Arregui; Juan A. Hernández
Abstract The aim of this study is to assess the extent to which social and employment integration enhances the efficacy of social–cognitive training carried out in prison through a Spanish adaptation of the Reasoning & Rehabilitation (R & R) programme. A quasi-experimental design was used to compare a group of inmates who received only social–cognitive training with a group of inmates who also received social and employment integration and with a comparison group who received neither of these interventions. The total sample was composed of 117 repeat offenders, serving sentence for property offences, drug dealing and offences against the person. The results obtained through a Kaplan–Meier survival analysis after a 6-year follow-up indicate that both intervention groups are significantly different from the comparison group. The group that received social and employment integration had the highest level of delayed recidivism, but the difference with the group that only received social–cognitive training was not statistically significant. The results are discussed in relation to the Good Lives Model and to the Risk–Needs–Responsivity Model of offender rehabilitation.
Multimedia Tools and Applications | 2014
Norena Martin-Dorta; Isabel Sanchez-Berriel; Miguel Bravo; Juan A. Hernández; Jose Luis Saorin; Manuel Contero
This paper presents a novel spatial instruction system for improving spatial abilities of engineering students. A 3D mobile game application called Virtual Blocks has been designed to provide a 3D virtual environment to build models with cubes that help students to perform visualization tasks to promote the development of their spatial ability during a short remedial course. A validation study with 26 freshman engineering students at La Laguna University (Spain) has concluded that the training had a measurable and positive impact on students’ spatial ability. In addition, the results obtained using a satisfaction questionnaire show that Virtual Blocks is considered an easy to use and stimulating application.
Feminism & Psychology | 2002
Manra Pilar Matud; Juan A. Hernández; Rosario J. Marrero
In this study, the relationship between work role and health was analysed in a sample of 712 women from the Canary Islands. The women, who ranged in age from 18 to 65 years old (mean = 37.5; SD = 19.5), came from different socio-cultural and work backgrounds. The results of the study show that the most relevant variable in the well-being of these women was their work role satisfaction. The most satisfied women showed less anxiety and depression, and had higher self-esteem and a higher overall level of satisfaction. After adjusting for differences in age, no significant health differences remained among women with a different number of roles and different occupational status. We have concluded that a womans well-being fundamentally rests in her opportunity to perform the work role she desires, without having to restrict herself to the traditional role of homemaker or being forced to become a high-achieving professional.
PLOS ONE | 2014
Inmaculada León; María José Rodrigo; Ileana Quiñones; Juan A. Hernández; Agustín Lage; Iván Padrón; Maria A. Bobes
Results illustrating an atypical neural processing in the early and late differentiation of infant faces have been obtained with neglectful mothers. The present study explores whether a different pattern of response is observed when using non-infant affective pictures. We examined the event-related evoked potentials and induced delta, theta and alpha activity in 14 neglectful mothers and 14 control mothers elicited while categorizing positive, negative and neutral pictures from the International Affective Picture System. Self-reports of anhedonia and empathy were also recorded. Early posterior negativity, P200 and late positive potential components were modulated by the emotional content of pictures in both groups. However, the LPP waveform had a more delayed and more attenuated maximum in neglectful mothers than in control mothers. Oscillatory responses indicated lower power increases for neglectful mothers than for control mothers in delta (1–4 Hz), theta (4–8 Hz) and lower alpha (8–10 Hz) bands at frontal sites, and a more consistent increase for neglectful mothers in theta and lower alpha bands at occipital sites, especially for negative pictures. These findings help us to better understand the limits of emotional insensitivity in neglectful mothers.
Behavior Research Methods Instruments & Computers | 1997
Juan A. Hernández; Gustavo Ramírez; Alfonso Sánchez
A high-level language program to obtain the bootstrap-corrected asymptotic distribution-free (ADF) test statistic proposed by Yung and Bentler (1994) is reviewed. The program uses the Gauss-Newton algorithm, first to obtain the ADF test statistic from the raw data, and second, to achieve the corrected test statistic from 500 independent bootstrap samples. A generator of nonnormal random samples was also implemented, according to the algorithms of Fleishman (1978) and Vale and Maurelli (1983), which permits the realization of Monte Carlo simulations. Furthermore, the open nature of the program facilitates the inclusion of new procedures as well as the possibility of increased control of the procedures, variables, and equations.
Behavior Research Methods Instruments & Computers | 1995
Concepción San Luis; Juan A. Hernández; Alfonso Sánchez
The structural equations program EQS V3.0 has proved to be an important tool for research in the field of Monte Carlo simulations. However, when used to replicate a simulation experiment, the simulator has been found to contain a serious flaw which makes it unusable for particularly complex models. This functional anomaly stems from the fact that, from a given replication onward, none of the remaining replications offer adequate and convergent solutions.