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    PublicationOpen Access
    Self-Help Plus for refugees and asylum seekers; study protocol for a series of individual participant data meta-analyses
    (Taylor _ Francis, 2021) Karyotaki, Eirini; Sijbrandij, Marit; Purgato, Marianna; Lakin, Daniel; Bailey, Della; Peckham, Emily; Uygun, Ersin; Tedeschi, Federico; Wancata, Johannes; Augustinavicius, Jura; Carswell, Ken; Valimaki, Maritta; van Ommeren, Mark; Koesters, Markus; Popa, Mariana; Leku, Marx Ronald; Anttila, Minna; Churchill, Rachel; White, Ross; Al-Hashimi, Sarah; Lantta, Tella; Au, Teresa; Klein, Thomas; Tol, Wietse A.; Cuijpers, Pim; Barbui, Corrado; Department of Psychology; Acartürk, Ceren; Faculty Member; Department of Psychology; College of Social Sciences and Humanities; 39271
    Background: refugees and asylum seekers face various stressors due to displacement and are especially vulnerable to common mental disorders. To effectively manage psychological distress in this population, innovative interventions are required. The World Health Organization (WHO) Self-Help Plus (SH+) intervention has shown promising outcomes in reducing symptoms of common mental disorders among refugees and asylum seekers. However, individual participant differences in response to SH+ remain largely unknown. The Individual Participant Data (IPD) meta-analysis synthesizes raw datasets of trials to provide cutting-edge evidence of outcomes that cannot be examined by conventional meta-analytic approaches. Objectives: this protocol outlines the methods of a series of IPD meta-analyses aimed at examining the effects and potential moderators of SH+ in (a) reducing depressive symptoms at post-intervention and (b) preventing the six-month cumulative incidence of mental disorders in refugees and asylum seekers. Method: RCTs on SH+ have been identified through WHO and all authors have agreed to share the datasets of the trials. The primary outcomes of the IPD meta-analyses are (a) reduction in depressive symptoms at post-intervention, and (b) prevention of six-month cumulative incidence of mental disorders. Secondary outcomes include post-traumatic stress disorder symptoms, well-being, functioning, quality of life, and twelve-month cumulative incidence of mental disorders. One-stage IPD meta-analyses will be performed using mixed-effects linear/logistic regression. Missing data will be handled by multiple imputation. Conclusions: these results will enrich current knowledge about the response to SH+ and will facilitate its targeted dissemination. The results of these IPD meta-analyses will be published in peer-reviewed journals.
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    PublicationOpen Access
    Shifting evaluation windows: predictable forward primes with long SOAs eliminate the impact of backward primes
    (Public Library of Science, 2013) Fockenberg, Daniel A.; Koole, Sander L.; Lakens, Daniël; Department of Psychology; Semin, Gün Refik; Researcher; Department of Psychology; College of Social Sciences and Humanities; 58066
    Recent work suggests that people evaluate target stimuli within short and flexible time periods called evaluation windows. Stimuli that briefly precede a target (forward primes) or briefly succeed a target (backward primes) are often included in the target's evaluation. In this article, the authors propose that predictable forward primes act as ""go"" signals that prepare target processing, such that earlier forward primes pull the evaluation windows forward in time. Earlier forward primes may thus reduce the impact of backward primes. This shifting evaluation windows hypothesis was tested in two experiments using an evaluative decision task with predictable (vs. unpredictable) forward and backward primes. As expected, a longer time interval between a predictable forward prime and a target eliminated backward priming. In contrast, the time interval between an unpredictable forward primes and a target had no effects on backward priming. These findings suggest that predictable features of dynamic stimuli can shape target extraction by determining which information is included (or excluded) in rapid evaluation processes.
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    PublicationOpen Access
    Cross-linguistic patterns in the acquisition of quantifiers
    (National Academy of Sciences, 2016) Katsos, Napoleon; Cummins, Chris; Ezeizabarrena, Maria-Jose; Gavarro, Anna; Kraljevic, Jelena Kuvac; Hrzica, Gordana; Grohmann, Kleanthes K.; Skordi, Athina; de Lopez, Kristine Jensen; Sundahl, Lone; van Hout, Angeliek; Hollebrandse, Bart; Overweg, Jessica; Faber, Myrthe; van Koert, Margreet; Smith, Nafsika; Vija, Maigi; Zupping, Sirli; Kunnari, Sari; Morisseau, Tiffany; Rusieshvili, Manana; Yatsushiro, Kazuko; Fengler, Anja; Varlokosta, Spyridoula; Konstantzou, Katerina; Farby, Shira; Guasti, Maria Teresa; Vernice, Mirta; Okabe, Reiko; Isobe, Miwa; Crosthwaite, Peter; Hong, Yoonjee; Balciuniene, Ingrida; Nizar, Yanti Marina Ahmad; Grech, Helen; Gatt, Daniela; Cheong, Win Nee; Asbjornsen, Arve; Torkildsen, Janne von Koss; Haman, Ewa; Miekisz, Aneta; Gagarina, Natalia; Puzanova, Julia; Andelkovic, Darinka; Savic, Maja; Josic, Smiljana; Slancova, Daniela; Kapalkova, Svetlana; Barberan, Tania; Hassan, Saima; Chan, Cecilia Yuet Hung; Okubo, Tomoya; van der Lely, Heather; Sauerland, Uli; Noveck, Ira; Department of Psychology; Özge, Duygu; Department of Psychology; College of Social Sciences and Humanities
    Learners of most languages are faced with the task of acquiring words to talk about number and quantity. Much is known about the order of acquisition of number words as well as the cognitive and perceptual systems and cultural practices that shape it. Substantially less is known about the acquisition of quantifiers. Here, we consider the extent to which systems and practices that support number word acquisition can be applied to quantifier acquisition and conclude that the two domains are largely distinct in this respect. Consequently, we hypothesize that the acquisition of quantifiers is constrained by a set of factors related to each quantifier's specific meaning. We investigate competence with the expressions for "all," "none," "some," "some. not," and "most" in 31 languages, representing 11 language types, by testing 768 5-y-old children and 536 adults. We found a cross-linguistically similar order of acquisition of quantifiers, explicable in terms of four factors relating to their meaning and use. In addition, exploratory analyses reveal that language-and learner-specific factors, such as negative concord and gender, are significant predictors of variation.
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    PublicationOpen Access
    Effectiveness of Self-Help Plus in preventing mental disorders in refugees and asylum seekers in Western Europe: a multinational randomized controlled trial
    (Karger Publishers, 2021) Purgato, Marianna; Carswell, Kenneth; Tedeschi, Federico; Anttila, Minna; Au, Teresa; Bajbouj, Malek; Baumgartner, Josef; Biondi, Massimo; Churchill, Rachel; Cuijpers, Pim; Koesters, Markus; Gastaldon, Chiara; Lantta, Tella; Nose, Michela; Ostuzzi, Giovanni; Papola, Davide; Popa, Mariana; Roselli, Valentina; Sijbrandij, Marit; Tarsitani, Lorenzo; Turrini, Giulia; Valimaki, Maritta; Walker, Lauren; Wancata, Johannes; Zanini, Elisa; White, Ross; van Ommeren, Mark; Barbui, Corrado; Department of Psychology; Acartürk, Ceren; İlkkurşun, Zeynep; Faculty Member; Master Student; Department of Psychology; College of Social Sciences and Humanities; Graduate School of Social Sciences and Humanities; 39271; N/A
    Introduction: Self-Help Plus (SH+) is a group-based psychological intervention developed by the World Health Organization for managing stress. Objective: to assess the effectiveness of SH+ in preventing mental disorders in refugees and asylum seekers in Western Europe. Methods: we conducted a randomized controlled trial in 5 European countries. Refugees and asylum seekers with psychological distress (General Health Questionnaire score >= 3), but without a Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM-5) or ICD/10 diagnosis of mental disorder, as assessed with the Mini International Neuropsychiatric Interview (MINI), were randomized to SH+ or enhanced treatment as usual (ETAU). The primary outcome was the frequency of mental disorders with the MINI at 6 months. Secondary outcomes included the frequency of mental disorders at postintervention, self-identified problems, psychological symptoms, and other outcomes. Results: four hundred fifty-nine individuals were randomly assigned to SH+ or ETAU. For the primary outcome, we found no difference in the frequency of mental disorders at 6 months (Cramer V = 0.007, p = 0.90, RR = 0.96; 95% CI 0.52-1.78), while the difference significantly favored SH+ at after the intervention (secondary outcome, measured within 2 weeks from the last session; Cramer V = 0.13, p = 0.01, RR = 0.50; 95% CI 0.29-0.87). Conclusions: this is the first randomized indicated prevention study with the aim of preventing the onset of mental disorders in asylum seekers and refugees in Western Europe. As a prevention effect of SH+ was not observed at 6 months, but rather after the intervention only, modalities to maintain its beneficial effect in the long term need to be identified.
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    PublicationOpen Access
    Trajectories of psychosocial symptoms and wellbeing in asylum seekers and refugees exposed to traumatic events and resettled in Western Europe, Turkey, and Uganda
    (Taylor _ Francis, 2022) Purgato, Marianna; Tedeschi, Federico; Turrini, Giulia; Anttila, Minna; Augustinavicious, Jura; Baumgartner, Josef; Bryant, Richard; Churchill, Rachel; Karyotaki, Eirini; Klein, Thomas; Koesters, Markus; Lantta, Tella; Leku, Marx R.; Nose, Michela; Ostuzzi, Giovanni; Popa, Mariana; Prina, Eleonora; Sijbrandij, Marit; Uygun, Ersin; Valimaki, Maritta; Walker, Lauren; Wancata, Johannes; White, Ross G.; Cuijpers, Pim; Tol, Wietse; Barbui, Corrado; Department of Psychology; Acartürk, Ceren; İlkkurşun, Zeynep; Faculty Member; Master Student; Department of Psychology; College of Social Sciences and Humanities; Graduate School of Social Sciences and Humanities; 39271; N/A
    Background: longitudinal studies examining mental health trajectories in refugees and asylum seekers are scarce. Objectives: to investigate trajectories of psychological symptoms and wellbeing in refugees and asylum seekers, and identify factors associated with these trajectories. Method: 912 asylum seekers and refugees from the control arm of three trials in Europe (n = 229), Turkey (n = 320), and Uganda (n = 363) were included. We described trajectories of psychological symptoms and wellbeing, and used trauma exposure, age, marital status, education, and individual trial as predictors. Then, we assessed the bidirectional interactions between wellbeing and psychological symptoms, and the effect of each predictor on each outcome controlling for baseline values. Results: symptom improvement was identified in all trials, and for wellbeing in 64.7% of participants in Europe and Turkey, versus 31.5% in Uganda. In Europe and Turkey domestic violence predicted increased symptoms at post-intervention (ss = 1.36, 95% CI 0.17-2.56), whilst murder of family members at 6-month follow-up (ss = 1.23, 95% CI 0.27-2.19). Lower wellbeing was predicted by murder of family member (ss = -1.69, 95% CI -3.06 to -0.32), having been kidnapped (ss = -1.67, 95% CI -3.19 to -0.15), close to death (ss = -1.38, 95% CI -2.70 to -0.06), and being in the host country >= 2 years (ss = -1.60, 95% CI -3.05 to -0.14). In Uganda at post-intervention, having been kidnapped predicted increased symptoms (ss = 2.11, 95% CI 0.58-3.65), and lack of shelter (ss = -2.51, 95% CI -4.44 to -0.58) and domestic violence predicted lower wellbeing (ss = -1.36, 95% CI -2.67 to -0.05). Conclusion: many participants adapt to adversity, but contextual factors play a critical role in determining mental health trajectories. / Antecedentes: estudios longitudinales que examinan las trayectorias de la salud mental en losrefugiados y solicitantes de asilo son escasos. Objetivos: investigar las trayectorias de los síntomas psicológicos y el bienestar en refugiadosy solicitantes de asilo, e identificar factores asociados a estas trayectorias.Métodos:Se incluyeron 912 solicitantes de asilos y refugiados del brazo control de tresensayos clínicos en Europa (n= 229), Turquía (n= 320) y Uganda (n= 363). Describimos las trayectorias psicológicas de los síntomas y el bienestar, y utilizamos la exposición traumática, laedad, el estado marital, la educación y el juicio individual como predictores. Después,evaluamos las interacciones bidireccionales entre el bienestar y los síntomas psicológicos, yel efecto de cada uno de los predictores en cada resultado controlando por los valores iniciales.Resultados: se identificó una mejoría en los síntomas en todos los ensayos, y del bienestar en el64.7% de los participantes en Europa y Turquía, versus el 31.5% en Uganda. En Europa y en Turquía,la violencia doméstica predijo el incremento de síntomas de después de la intervención (ß= 1.36,95% CI 0.17 a 2.56), mientras que el homicidio de algún miembro familiar a los 6 meses deseguimiento (ß= 1.23, 95% CI 0.27 a 2.19). Un menor bienestar fue predicho por el homicidio dealgún miembro de la familia (ß=?1.69, 95% CI?3.06 a?0.32), haber sido secuestrado (ß=?1.67, 95% CI?3.19 a?0.15), haber estado próximo a la muerte (ß=?1.38, 95% CI?2.70 a?0.06), y estar en el país de acogida?2años(ß=?1.60, 95% CI?3.05 a?0.14). En Uganda,después de la intervención, haber sido secuestrado predijo un aumento de los síntomas(ß=2.11, 95% CI 0.58 a 3.65), y la falta de refugio (ß=?2.51, 95% CI?4.44 a?0.58) y laviolencia doméstica predijo un menor bienestar (ß=?1.36, 95% CI?2.67 a?0.05).Conclusión: muchos participantes se adaptan a la adversidad, pero los factores contextualesjuegan un papel crítico en determinar las trayectorias de la salud mental.
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    PublicationOpen Access
    The value added of studying work attitudes and values: some lessons to learn
    (Sage, 2019) Tosun, Jale; Kraaykamp, Gerbert; Department of Psychology; Cemalcılar, Zeynep; Faculty Member; Department of Psychology; College of Social Sciences and Humanities; 40374
    Work is one of the most valued activities of individuals' lives. Attitudes toward work not only influence work-related outcomes, such as income, but also hold sway over personal well-being and satisfaction with politico-administrative institutions. Consequently, country-comparative research aimed at learning about the determinants of individuals' work attitudes and values and their consequences is worthwhile and offers insights that are relevant for many disciplines. In this epilogue, we summarize the main insights produced by the contributions to this volume on the antecedents and consequences of work attitudes and values as well as draw some broader conclusions.
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    PublicationOpen Access
    Symptoms of anxiety and depression during the COVID-19 pandemic in six European countries and Australia - differences by prior mental disorders and migration status
    (Elsevier, 2022) Gemes, K.; Bergstrom, J.; Papola, D.; Barbui, C.; Lam, A.I.F.; Hall, B.J.; Seedat, S.; Morina, N.; Quero, S.; Campos, D.; Pinucci, I.; Tarsitani, L.; Deguen, S.; van der Waerden, J.; Patane, M.; Sijbrandij, M.; Burchert, S.; Bryant, R.A.; Mittendorfer-Rutz, E.; Department of Psychology; Acartürk, Ceren; Faculty Member; Department of Psychology; College of Social Sciences and Humanities; 39271
    Background: little is known about changes of mental health during the COVID-19 pandemic in potentially disadvantaged groups. We investigated changes in anxiety and depression symptoms during the first year of the pandemic in six European countries and Australia by prior mental disorders and migration status. Methods: overall, 4674 adults answered a web-based survey in May-June 2020 and were followed by three repeated surveys up to February 2021. Information on psychosocial, financial and demographic, living conditions, prior mental disorders, depression and anxiety symptoms during the pandemic and migration status was collected. Weighted general estimation equations modelling was used to investigate the association between prior mental disorders, migration status, and symptoms over time. Results: most participants were <40 years old (48%), women (78%) and highly educated (62%). The baseline prevalence of depressive and anxiety symptoms ranged between 19%-45% and 13%-35%, respectively. In most countries, prevalence rates remained unchanged throughout the pandemic and were higher among people with prior mental disorders than without even after adjustment for several factors. We observed interactions between previous mental disorders and symptoms of anxiety or depression over time in two countries. No difference by migration status was noted. Limitations: convenience sampling limits generalizability. Self-assessed symptoms of depression and anxiety might involve some misclassification. Conclusions: depression and anxiety symptoms were worse among individuals with prior mental disorders than without, but there was no clear trend of worsening mental health in the observed groups during the observed period.
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    PublicationOpen Access
    Second language tutoring using social robots: a large-scale study
    (Institute of Electrical and Electronics Engineers (IEEE), 2019) Vogt, Paul; van den Berghe, Rianne; de Haas, Mirjam; Hoffman, Laura; Mamus, Ezgi; Montanier, Jean-Marc; Oudgenoeg-Paz, Ora; Garcia, Daniel Hernandez; Papadopoulos, Fotios; Schodde, Thorsten; Verhagen, Josje; Wallbridge, Christopher D.; Willemsen, Bram; de Wit, Jan; Belpaeme, Tony; Goksun, Tilbe; Kopp, Stefan; Krahmer, Emiel; Leseman, Paul; Pandey, Amit Kumar; Department of Psychology; Kanero, Junko; Oranç, Cansu; Küntay, Aylin C.; Faculty Member; Department of Psychology; Graduate School of Social Sciences and Humanities
    We present a large-scale study of a series of seven lessons designed to help young children learn english vocabulary as a foreign language using a social robot. The experiment was designed to investigate 1) the effectiveness of a social robot teaching children new words over the course of multiple interactions (supported by a tablet), 2) the added benefit of a robot's iconic gestures on word learning and retention, and 3) the effect of learning from a robot tutor accompanied by a tablet versus learning from a tablet application alone. For reasons of transparency, the research questions, hypotheses and methods were preregistered. With a sample size of 194 children, our study was statistically well-powered. Our findings demonstrate that children are able to acquire and retain English vocabulary words taught by a robot tutor to a similar extent as when they are taught by a tablet application. In addition, we found no beneficial effect of a robot's iconic gestures on learning gains.
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    PublicationOpen Access
    MaR-T: designing a projection-based mixed reality system for nonsymbolic math development of preschoolers: guided by theories of cognition and learning
    (Association for Computing Machinery (ACM), 2019) Department of Psychology; Department of Electrical and Electronics Engineering; Göksun, Tilbe; Ürey, Hakan; Salman, Elif; Özcan, Oğuzhan; Beşevli, Ceylan; Faculty Member; Faculty Member; Faculty Member; Department of Psychology; Department of Electrical and Electronics Engineering; KU Arçelik Research Center for Creative Industries (KUAR) / KU Arçelik Yaratıcı Endüstriler Uygulama ve Araştırma Merkezi (KUAR); College of Social Sciences and Humanities; College of Engineering; Graduate School of Sciences and Engineering; 47278; 8579; N/A; 12532; N/A
    Recent developmental studies state that nonsymbolic number representation (i.e., more-less comparisons) is important for math development, and children's judgment about such non-numerical magnitudes can be affected by sensory properties (i.e., volume, space). Yet, to our knowledge, there are no tangible based systems for training this math concept. Building on theories of cognition and learning, we developed MaR-T, a projector-camera setup. This paper is a step towards investigating the effects of projection-based mixed-reality (MR) system with tangibles on nonsymbolic number representation of 3-to 5-year-old children. We present our user studies with a total of 14 participants, conducted to observe their interaction with the setup and the possible effects of our design on learning. The results indicate that MaR-T can provide active, engaging, and social learning, and our insights can inspire other interaction design and education studies.
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    PublicationOpen Access
    Editorial: Representational states in memory: where do we stand?
    (Frontiers, 2015) Cowan, Nelson; Department of Psychology; Öztekin, İlke; PhD Student; Department of Psychology; College of Social Sciences and Humanities
    This editorial discusses representational states in memory. For decades researchers have assessed the interactions and dissociations across memory systems and representational states using behavioral investigations, seeking for the key principles that govern them. Recent advances in neuroscience have provided the field with a new set of tools that can be employed to complement and extend previous efforts by means of assessing the corresponding underlying neural mechanisms. In an effort to move toward a more unified perspective, this research topic brought together a collection of empirical, theoretical and review articles that collectively advance our understanding of representational states in memory, as well as bear the potential to reconcile some of the differences across the models. The authors conclude by highlighting several venues for future research. Recent advances in neuroscience now enable powerful approaches that combine behavioral indices along with complementary neuroscience methods that can utilize univariate and multivariate analyses of neuroimaging data on healthy individuals, as well as transcranial magnetic stimulation and lesion studies to test and infer similarities and dissociations across the hypothesized states of memory. (PsycINFO Database Record (c) 2015 APA, all rights reserved)