CRIS

Permanent URI for this communityhttps://investigadores.udd.cl/handle/123456789/1

Browse

Search Results

Now showing 1 - 10 of 11

Some of the metrics are blocked by your
consent settings
A Methodology for the Analysis of Soccer Matches Based on PageRank Centrality
(2017)
Julio Rojas-Mora
;
CHAVEZ BUSTAMANTE, FELIPE ORLANDO
;
Nicolás Medina-Valdebenito
;
Julio del Río-Andrade
Scopus© Citations 6 3
Some of the metrics are blocked by your
consent settings
Wellbeing, social media addiction and coping strategies among Chilean adolescents during the pandemic
(2023)
VARELA TORRES, JORGE JAVIER
;
PÉREZ EWERT, JANET CAROLA
;
RODRIGUEZ RIVAS, MATIAS ENRIQUE
;
CHUECAS JOFRE, MARIA JOSEFINA
;
Javiera Romo Neira
<jats:sec><jats:title>Introduction</jats:title><jats:p>During the COVID-19 pandemic, adolescents had to deal with a range of mental health problems that has increased social media addiction levels with adverse effects on life satisfaction. Previous studies have explored coping mechanisms to deal with this addiction problem, but did not consider the need to simultaneously cope with different dimensions. Therefore, our study aimed to examine the moderating effect of various coping mechanisms on the relationship between social media addiction and adolescent life satisfaction.</jats:p></jats:sec><jats:sec><jats:title>Methods</jats:title><jats:p>Self-report questionnaires were applied to 1290 secondary school students (age mean = 16.03, <jats:italic>SD</jats:italic> = 1.27, range: 14 to 19; and 57% female). An exploratory and a confirmatory factor analysis were performed to determine the factor structure of the Brief-Cope 28 scale. Then, a descriptive and correlational analysis of the variables and a multiple linear regression analysis was performed.</jats:p></jats:sec><jats:sec><jats:title>Results</jats:title><jats:p>We found that the social media addiction risk was negatively associated with life satisfaction, adaptive strategies were positively correlated to life satisfaction, and maladaptive strategies were negatively correlated to it. Also, a moderation model was evaluated in which four stress management strategies, namely acceptance and perspective-taking, seeking socio-emotional support, active coping, and maladaptive strategies all conditioned the relationship between social media addiction risk and life satisfaction after controlling for demographic variables and the specific strategies of using comedy, religion and substance use. Results indicate additive and multiplicative effects of management strategies for stressful situations in the studied relationship. Seeking socio-emotional support and active coping were positively related to life satisfaction and maladaptive strategies were negatively associated with it. Multiplicative effects indicate that the relationship between the social media addiction risk and life satisfaction depends only on the acceptance and perspective taking that adolescents report. When adolescents reported having low or average levels of acceptance and perspective taking, there was a negative correlation with general life satisfaction, a connection that grew markedly stronger. In contrast, no connection between social media addiction and life satisfaction was detected for adolescents who report higher levels of acceptance and perspective-taking.</jats:p></jats:sec><jats:sec><jats:title>Discussion</jats:title><jats:p>Abuse of social media and the use of maladaptive stress coping strategies were risk factors that decreased life satisfaction among adolescents during the COVID-19 pandemic period.</jats:p></jats:sec>
2Scopus© Citations 12
Some of the metrics are blocked by your
consent settings
Clinicians’ preferences and attitudes towards the use of lithium in the maintenance treatment of bipolar disorders around the world: a survey from the ISBD Lithium task force
(2023-12-01)
Hidalgo-Mazzei, Diego
;
Mantingh, Tim
;
Pérez de Mendiola, Xavier
;
Samalin, Ludovic
;
UNDURRAGA FOURCADE, JUAN PABLO
Background: Lithium has long been considered the gold-standard pharmacological treatment for the maintenance treatment of bipolar disorders (BD) which is supported by a wide body of evidence. Prior research has shown a steady decline in lithium prescriptions during the last two decades. We aim to identify potential factors explaining this decline across the world with an anonymous worldwide survey developed by theInternational Society for Bipolar Disorders (ISBD) Task Force “Role of Lithium in Bipolar Disorders” anddistributed by diverse academic and professional international channels. Results: A total of 886 responses were received of which 606 completed the entirequestionnaire while 206 completed it partially. Respondents were from 43 different countries comprising allcontinents. Lithium was the most preferred treatment option for the maintenance of BD patients (59%). The mostrelevant clinical circumstances in which lithium was the preferred option were in patients with BD I (53%), afamily history of response (18%), and a prior response during acute treatment (17%). In contrast, Lithium wasnot the preferred option in case of patients´ negative beliefs and/or attitudes towards lithium (13%), acuteside-effects or tolerability problems (10%) and intoxication risk (8%). Clinicians were less likely to preferlithium as a first option in BD maintenance phase when practising in developing economy countries [X2 (1,N = 430) = 9465, p = 0.002)] and private sectors [X2 (1, N = 434) = 8191, p = 0.004)]. Conclusions: Clinicians’ preferences and attitudes towards the use of lithium in the maintenancetreatment of bipolar disorders appear to be affected by both the patients’ beliefs and the professionalcontexts where clinicians provide their services. More research involving patients is needed for identifyingtheir attitudes toward lithium and factors affecting its use, particularly in developing economies.
Scopus© Citations 28 1
Some of the metrics are blocked by your
consent settings
Experts by Experience: Qualitative Evaluation of Adolescent Participation in the Development of a Technological Intervention to Prevent Youth Suicide in Chile
(2021)
Sara Hamilton Schilling
;
CARREÑO CALDERON, ALEJANDRA ANGELICA
;
Eric Tapia
;
Franco Mascayano
;
Romina Pitronello
<jats:p>Adolescent suicide is a pressing problem in Chile that has not yet been sufficiently addressed, as suicide rates have stagnated in recent years. One possible explanation could be linked to the adult-centered paradigm that continues to prevail in relation to adolescent health initiatives. In light of this, programs that seek to promote youth mental health should consider incorporating adolescents in the design process using participatory methodologies, to ensure that these initiatives are well-suited for the population. In line with this recommendation, a group of seven adolescents, 13 to 20 years of age, were incorporated into a research team to actively guide the design, development, and validation of a technology-based intervention, known as Project Clan, which was piloted to reduce adolescent suicide in schools in Chile. This group was known as the “Group of Experts,” in acknowledgment of their role as experts by experience on adolescence. A qualitative case study was conducted to explore their lived experiences, through semistructured individual in-depth interviews with six members of the group. Results showed that the adolescents had a high level of interest in mental health and had experienced problems of their own or accompanied friends who were struggling, which motivated their participation in the study. They had a critical view of the previous interventions they had received through educational institutions and valued their role in the promotion of their peers' mental health through the Group of Experts. They also highlighted the importance of creating tools that complement their daily lives and provide an alternative to existing social networks, by respecting their anonymity, providing a secure place for divulgation and self-expression, and facilitating access to professional support. We conclude that programs that address issues that affect adolescents should incorporate adolescents in the decision-making and design processes to ensure the acceptability and effectivity of their interventions.</jats:p>
Scopus© Citations 10 4
Some of the metrics are blocked by your
consent settings
Directors and syndics in corporate networks: Argentina and Italy compared (1913–1990)
(2019)
Andrea Lluch
;
Alberto Rinaldi
;
SALVAJ CARRERA, ERICA HELENA
;
Michelangelo Vasta
10Scopus© Citations 5
Some of the metrics are blocked by your
consent settings
Herding Friends in Similarity-Based Architecture of Social Networks
(2020)
Tamas David-Barrett
<jats:title>Abstract</jats:title><jats:p>Although friendship as a social behaviour is an evolved trait that shares many similarities with kinship, there is a key difference: to choose friends, one must select few from many. Homophily, i.e., a similarity-based friendship choice heuristic, has been shown to be the main factor in selecting friends. Its function has been associated with the efficiency of collective action via synchronised mental states. Recent empirical results question the general validity of this explanation. Here I offer an alternative hypothesis: similarity-based friendship choice is an individual-level adaptive response to falling clustering coefficient of the social network typical during urbanisation, falling fertility, increased migration. The mathematical model shows how homophily as a friend-choice heuristic affects the network structure: (1) homophilic friendship choice increases the clustering coefficient; (2) network proximity-based and similarity-based friendship choices have additive effects on the clustering coefficient; and (3) societies that face falling fertility, urbanisation, and migration, are likely go through a u-shaped transition period in terms of clustering coefficient. These findings suggest that social identity can be seen as an emergent phenomenon and is the consequence, rather than the driver of, homophilic social dynamics, and offer an alternative explanation for the rise of “fake news” as a societal phenomenon.</jats:p>
2Scopus© Citations 15
Some of the metrics are blocked by your
consent settings
Bots don’t Vote, but They Surely Bother!
(2022)
Eduardo Graells-Garrido
;
Ricardo Baeza-Yates
8Scopus© Citations 6
Some of the metrics are blocked by your
consent settings
Network Effects of Demographic Transition
(2019)
Tamas David-Barrett
<jats:title>Abstract</jats:title><jats:p>Traditional human societies use two of biology’s solutions to reduce free-riding: by collaborating with relatives, they rely on the mechanism of kin-selection, and by forming highly clustered social kin-networks, they can efficiently use reputation dynamics. Both of these solutions assume the presence of relatives. This paper shows how social networks change during demographic transition. With falling fertility, there are fewer children that could be relatives to one another. As the missing kin are replaced by non-kin friends, local clustering in the social network drops. This effect is compounded by increasing population size, characteristic of demographic transition. The paper also shows that the speed at which reputation spreads in the network slows down due to both falling fertility and increasing group size. Thus, demographic transition weakens both mechanisms for eliminating free-riders: there are fewer relatives around, and reputation spreads slower. This new link between falling fertility and the altered structure of the social network offers novel interpretations of the origins of legal institutions, the Small World phenomenon, the social impact of urbanisation, and the birds-of-a-feather friendship choice heuristic.</jats:p>
1Scopus© Citations 26
Some of the metrics are blocked by your
consent settings
Multimodal neurocognitive markers of naturalistic discourse typify diverse neurodegenerative diseases
(2021)
Agustina Birba
;
Sol Fittipaldi
;
Judith C Cediel Escobar
;
Cecilia Gonzalez Campo
;
Agustina Legaz
<jats:title>Abstract</jats:title> <jats:p>Neurodegeneration has multiscalar impacts, including behavioral, neuroanatomical, and neurofunctional disruptions. Can disease-differential alterations be captured across such dimensions using naturalistic stimuli? To address this question, we assessed comprehension of four naturalistic stories, highlighting action, nonaction, social, and nonsocial events, in Parkinson’s disease (PD) and behavioral variant frontotemporal dementia (bvFTD) relative to Alzheimer’s disease patients and healthy controls. Text-specific correlates were evaluated via voxel-based morphometry, spatial (fMRI), and temporal (hd-EEG) functional connectivity. PD patients presented action–text deficits related to the volume of action–observation regions, connectivity across motor-related and multimodal-semantic hubs, and frontal hd-EEG hypoconnectivity. BvFTD patients exhibited social–text deficits, associated with atrophy and spatial connectivity patterns along social-network hubs, alongside right frontotemporal hd-EEG hypoconnectivity. Alzheimer’s disease patients showed impairments in all stories, widespread atrophy and spatial connectivity patterns, and heightened occipitotemporal hd-EEG connectivity. Our framework revealed disease-specific signatures across behavioral, neuroanatomical, and neurofunctional dimensions, highlighting the sensitivity and specificity of a single naturalistic task. This investigation opens a translational agenda combining ecological approaches and multimodal cognitive neuroscience for the study of neurodegeneration.</jats:p>
2Scopus© Citations 39
Some of the metrics are blocked by your
consent settings
Hospitalisation in high-risk pregnancy patients: is prenatal attachment affected?
(2020)
Elisa Palma
;
Ivan Armijo
;
Javier Cifuentes
;
Sergio Ambiado
;
Pilar Rochet
17Scopus© Citations 15

CRIS

Browse

Filters

Settings

Sort By

Results per page

Search Results