| 1. |
- Stevanovic, D., et al.
(författare)
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Assessing the symptoms of Internet Gaming Disorder among college/university students: An international validation study of a self-report
- 2020
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Ingår i: Psihologija. - : National Library of Serbia. - 0048-5705 .- 1451-9283. ; 53:1, s. 43-63
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Tidskriftsartikel (refereegranskat)abstract
- The present study evaluated the psychometric properties of a self-report scale for assessing Internet Gaming Disorder (IGD) symptoms according to the DSM-5 and ICD-11 among 3270 college/university students (2095 [64.1%] females; age mean 21.6 [3.1] years) from different countries worldwide. Croatian, English, Polish, Portuguese, Serbian, Turkish, and Vietnamese versions of the scale were tested. The study showed that symptoms of IGD could be measured as a single underlying factor among college/university students. A nine item-symptom scale following DSM-5, and a short four-item scale representing the main ICD-11 symptoms, had sound internal consistency and construct validity. Three symptom-items were found non-invariant across the language samples (i.e., preoccupation with on-line gaming, loss of interests in previous hobbies and entertainment, and the use of gaming to relieve negative moods). This study provides initial evidence for assessing IGD symptoms among college/university students and will hopefully foster further research into gaming addiction in this population worldwide especially with taking into account language/cultural differences.
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| 2. |
- Ćirović, N., et al.
(författare)
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Thought and mood/arousal disturbances as central broad dimensions in youth psychopathology : A network analysis
- 2024
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Ingår i: Neuroscience Applied. - 2772-4085. ; 3:Suppl 1, s. 103951-103951
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Tidskriftsartikel (refereegranskat)abstract
- Mounting evidence has implicated that the structure of psychopathology is better conceptualized as dimensional and not categorical as well as hierarchical [1-3]. A hierarchical structure includes a broad general dimension of psychopathology and more specific dimensions that capture distinct aspects of psychopathology [3]. Studies inquiring into the structure of psychopathology in youth are limited, but highly needed to provide the basis for aetiological research. A network paradigm could offer a novel way to study the structure of psychopathological dimensions revealing dynamics behind their interrelations.This study was based on the previous analysis that aimed to map various psychopathological symptoms and personality traits within the hierarchical structure based on the Hierarchical Taxonomy of Psychopathology (HiTOP) [2] in a multinational sample of 3923 community adolescents (34.7% males, aged 15 to 19 years) (https://osf.io/fujxa/).Twelve specific components were derived via sequential principal component analysis (PCA) and further analysed here: thought dysfunction, low mood, fearfulness, anxiety, physiological hyperarousal, attentional dysfunction, disruptive mood, antisocial behaviour, antagonistic behaviour, detachment, self-destructive behaviour, and substance use. These components were an input to a network analysis to study the grouping/node communities, interconnectedness, and centrality of them. The analyses include Exploratory Graph Analysis (EGA; model=glasso) for dimensionality/grouping analysis and network analysis (EBICglasso estimation performed on Spearman correlations) performed in EGAnet and bootnet packages in R. We used Strength and Expected Influence as centrality measures. Components are represented as nodes in the network.The EGA suggested four dimensions/node communities: the first consisting of substance use and antisocial behaviour, the second composed of self-destructive behaviour and disruptive mood, the third consisting of antagonism and detachment, and the fourth consisting of thought dysfunction, low mood, physiological arousal, anxiety, attentional dysfunction, and fearfulness.The network analysis revealed that thought dysfunction, physiological arousal, low mood, and disruptive mood were the most central nodes in the network suggesting their interconnectedness with all other nodes in the network.Our network analysis revealed that specific psychopathological subfactors in youth could be clustered into four broader separate dimensions. Specifically, thought and mood/arousal disturbances proved to be most interconnected with all other nodes/subfactors in the network suggesting that these subfactors could be central in youth psychopathology.This result reinforces earlier observations, indicating that thought dysfunction encompasses more than just disordered thought content and forms; it also represents a transdiagnostic phenomenon that spans various disorder dimensions [5]. Thought dysfunction is primarily associated with psychosis but it is also an indication of a broader inability to regulate thinking processes in general (i.e., dysfunctional processes) and extends to other cognitive-rational disturbances [1]. In addition, these findings also align with previous findings that negative affectivity (mostly related to individual differences in experiences of negative emotions), like low or disruptive mood and arousal difficulties highly likely underly general psychopathology [1].
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| 3. |
- McDevitt, Allan D., et al.
(författare)
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Next-generation phylogeography resolves post-glacial colonization patterns in a widespread carnivore, the red fox (Vulpes vulpes), in Europe
- 2022
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Ingår i: Molecular Ecology. - : Wiley. - 0962-1083 .- 1365-294X. ; 31:3, s. 993-1006
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Tidskriftsartikel (refereegranskat)abstract
- Carnivores tend to exhibit a lack of (or less pronounced) genetic structure at continental scales in both a geographic and temporal sense and this can confound the identification of post-glacial colonization patterns in this group. In this study we used genome-wide data (using genotyping by sequencing [GBS]) to reconstruct the phylogeographic history of a widespread carnivore, the red fox (Vulpes vulpes), by investigating broad-scale patterns of genomic variation, differentiation and admixture amongst contemporary populations in Europe. Using 15,003 single nucleotide polymorphisms (SNPs) from 524 individuals allowed us to identify the importance of refugial regions for the red fox in terms of endemism (e.g., Iberia). In addition, we tested multiple post-glacial recolonization scenarios of previously glaciated regions during the Last Glacial Maximum using an Approximate Bayesian Computation (ABC) approach that were unresolved from previous studies. This allowed us to identify the role of admixture from multiple source population post-Younger Dryas in the case of Scandinavia and ancient land-bridges in the colonization of the British Isles. A natural colonization of Ireland was deemed more likely than an ancient human-mediated introduction as has previously been proposed and potentially points to a larger mammalian community on the island in the early post-glacial period. Using genome-wide data has allowed us to tease apart broad-scale patterns of structure and diversity in a widespread carnivore in Europe that was not evident from using more limited marker sets and provides a foundation for next-generation phylogeographic studies in other non-model species.
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