Katerina Papanikolaou

Prof. Katerina Papanikolaou

Department of Child Psychiatry, Medical School, Aghia Sophia Children’s Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece
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Research Focus & Metrics

Academic Career Length

7Years (2020-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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17 April 2023 in Behavioral Sciences
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Journal Article
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Panagiotis KourtesisPanagiotis Kourtesis
Panagiotis Kourtesis
EKEvangelia Chrysanthi Kouklari
Evangelia Chrysanthi Kouklari
Petros RoussosPetros Roussos
Petros Roussos
VMVasileios Mantas
Vasileios Mantas
Katerina PapanikolaouKaterina Papanikolaou
Katerina Papanikolaou
Artemios PehlivanidisArtemios Pehlivanidis
Artemios Pehlivanidis
Poor social skills in autism spectrum disorder (ASD) are associated with reduced independence in daily life. Current interventions for improving the social skills of individuals with ASD fail to represent the complexity of real-life social settings and situations. Virtual reality (VR) may facilitate social skills training in social environments and situations similar to those in real life; however, more research is needed to elucidate aspects such as the acceptability, usability, and user experience of VR systems in ASD. Twenty-five participants with ASD attended a neuropsychological evaluation and three sessions of VR social skills training, which incorporated five social scenarios with three difficulty levels. Participants reported high acceptability, system usability, and user experience. Significant correlations were observed between performance in social scenarios, self-reports, and executive functions. Working memory and planning ability were significant predictors of the functionality level in ASD and the VR system’s perceived usability, respectively. Yet, performance in social scenarios was the best predictor of usability, acceptability, and functionality level. Planning ability substantially predicted performance in social scenarios, suggesting an implication in social skills. Immersive VR social skills training in individuals with ASD appears to be an appropriate service, but an errorless approach that is adaptive to the individual’s needs should be preferred.

26 August 2020 in BMC Psychiatry
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Journal Article
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Artemios PehlivanidisArtemios Pehlivanidis
Artemios Pehlivanidis
Katerina PapanikolaouKaterina Papanikolaou
Katerina Papanikolaou
VMVasilios Mantas
Vasilios Mantas
EKEva Kalantzi
Eva Kalantzi
KKKalliopi Korobili
Kalliopi Korobili
CPCharalambos Papageorgiou
Charalambos Papageorgiou
Background: Co-occurring psychiatric disorders in adults with Attention Deficit Hyperactivity Disorder (ADHD) and/or Autism Spectrum Disorder (ASD) contribute to the burden of the healthcare and possibly to the delay of diagnosis. Aim of the study was to clinically assess the prevalence and compare lifetime co-occurring psychopathology in a sample of newly diagnosed ADHD and/or ASD adults and discuss the diagnostic challenges they pose. Methods: The lifetime prevalence rates of ten of the most frequently co-occurring psychiatric diagnoses was registered in 336 adults of normal intelligence who underwent a thorough clinical evaluation for the diagnosis of ADHD and/or ASD for the first time in their lives. Four study groups were formed: the ADHD (n = 151), the ASD (n = 58), the ADHD+ASD (n = 28) and the nonADHD/nonASD (NN) (n = 88) group. Results: At least one co-occurring psychopathology was found in 72.8% of the ADHD group, in 50% of the ASD group, in 72.4% of the ADHD+ASD group and in 76.1% of the NN group (p = 0.004). In all groups the most frequent psychiatric disorder was depressive disorder. The only significant difference regarding the patterns of psychiatric co-occurrence between the ADHD and the nonADHD groups (ASD and NN groups) was found for SUD (p = 0.001). Also, the proportion of subjects with Bipolar Disorder was significantly greater in the NN group as compared to those with ASD (p = 0.025). Conclusions: Our results support the high prevalence of co-occurring psychiatric disorders in adults with ADHD and/or ASD with the ASD group presenting the lowest rate. The most marked difference between the ADHD and the nonADHD groups was found for SUD. Moreover, our findings highlight the need for a thorough clinical assessment of all referred patients both in the presence and absence of ADHD and/or ASD.

26 December 2020 in Brain Sciences
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Journal Article
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Artemios PehlivanidisArtemios Pehlivanidis
Artemios Pehlivanidis
Katerina PapanikolaouKaterina Papanikolaou
Katerina Papanikolaou
KKKalliopi Korobili
Kalliopi Korobili
EKEva Kalantzi
Eva Kalantzi
VMVasileios Mantas
Vasileios Mantas
CPCharalambos Papageorgiou
Charalambos Papageorgiou
This study assessed the co-occurrence of attention deficit hyperactivity disorder (ADHD) and autism spectrum disorder (ASD) in newly diagnosed adults of normal intelligence and the contribution of trait-based dimensions deriving from the Barkley Adult ADHD Rating Scale-IV (BAARS-IV), the Autism-Spectrum Quotient (AQ), and the Empathy Quotient (EQ) to the differentiation of patients with ADHD, ASD, and ADHD/ASD. A total of 16.1% of patients with ADHD received a co-occurring ASD diagnosis, while 33.3% of patients with ASD received an ADHD diagnosis. Subjects with ADHD or ADHD/ASD had higher scores in all ADHD traits compared to ASD subjects. Compared to the ADHD group, the ASD group had AQ scores that were significantly greater, except for attention to detail. ADHD/ASD co-occurrence significantly increased the score of attention to detail. The total EQ score was greater in the ADHD group. In the stepwise logistic regression analyses, past hyperactivity, current inattention and impulsivity, attention switching, communication, imagination, and total EQ score discriminated ADHD patients from ASD patients. Attention to detail, imagination, and total EQ score discriminated ADHD cases from ADHD/ASD cases, while past hyperactivity and current impulsivity discriminated ASD subjects from ADHD/ASD subjects. Our findings highlight the importance of particular trait-based dimensions when discriminating adults with ADHD, ASD, and co-occurring ADHD/ASD.

14 May 2023 in European Child & Adolescent Psychiatry
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Journal Article
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AKAnastasia Koumoula
Anastasia Koumoula
LMLauro Estivalete Marchionatti
Lauro Estivalete Marchionatti
ACArthur Caye
Arthur Caye
VKVasiliki Eirini Karagiorga
Vasiliki Eirini Karagiorga
PBPanagiota Balikou
Panagiota Balikou
GSGiovanni Abrahão Salum
Giovanni Abrahão Salum
Evidence-based information is essential for effective mental health care, yet the extent and accessibility of the scientific literature are critical barriers for professionals and policymakers. To map the necessities and make validated resources accessible, we undertook a systematic review of scientific evidence on child and adolescent mental health in Greece encompassing three research topics: prevalence estimates, assessment instruments, and interventions. We searched Pubmed, Web of Science, PsycINFO, Google Scholar, and IATPOTEK from inception to December 16th, 2021. We included studies assessing the prevalence of conditions, reporting data on assessment tools, and experimental interventions. For each area, manuals informed data extraction and the methodological quality were ascertained using validated tools. This review was registered in protocols.io [68583]. We included 104 studies reporting 533 prevalence estimates, 223 studies informing data on 261 assessment instruments, and 34 intervention studies. We report the prevalence of conditions according to regions within the country. A repository of locally validated instruments and their psychometrics was compiled. An overview of interventions provided data on their effectiveness. The outcomes are made available in an interactive resource online [https://rpubs.com/camhi/sysrev_table]. Scientific evidence on child and adolescent mental health in Greece has now been cataloged and appraised. This timely and accessible compendium of up-to-date evidence offers valuable resources for clinical practice and policymaking in Greece and may encourage similar assessments in other countries.

25 February 2022 in Journal of Clinical Medicine
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Katerina PapanikolaouKaterina Papanikolaou
Katerina Papanikolaou
VNVassiliki Ili Ntre
Vassiliki Ili Ntre
IGIoanna-Maria Gertsou
Ioanna-Maria Gertsou
ETEvdokia Tagkouli
Evdokia Tagkouli
CTChara Tzavara
Chara Tzavara
GKGerasimos A. Kolaitis
Gerasimos A. Kolaitis
Parenting a child with autism can be particularly stressful and challenging, especially during periods of crises. This study focuses on parenting children with autism during the COVID-19 pandemic in comparison to the economic crisis, six years ago. We administered the same set of questionnaires (CES-D, F-COPES, PSI-SF, and WHOQoL-BREF), along with a demographic characteristic and a COVID-19-related questionnaire to the same group of parents of children with autism as we did six years ago. Results indicated that during the COVID-19 crisis, the level of parenting stress and the distress due to personal factors related to demands of parenting, were significantly lower compared to the economic crisis, while the environment facet of quality of life was significantly higher. The depressive symptomatology was elevated during both periods. Finally, when addressing the pandemic crisis, parents were more likely to passively accept problematic issues, less able to obtain social support, and less able to acquire and accept help from others. In our sample, findings differentiate the genre of crises through the parents’ responses regarding the sense of competence in their parental role, their quality of life, and the coping strategies they implemented. The study implies that each crisis must be confronted with particular responses to particular needs.

18 January 2024 in Languages
Verified
Journal Article
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Vasiliki ZarokanellouVasiliki Zarokanellou
Vasiliki Zarokanellou
APAlexandra Prentza
Alexandra Prentza
Dionysios TafiadisDionysios Tafiadis
Dionysios Tafiadis
GKGerasimos A. Kolaitis
Gerasimos A. Kolaitis
Katerina PapanikolaouKaterina Papanikolaou
Katerina Papanikolaou
Background: This quasi-experimental comparative group study examined vocabulary knowledge and its associations with other language skills in Greek-speaking children with high-functioning Autism Spectrum Disorder and mild language impairment (HF-ASDLI) and typically developing (TD) peers. Methods: 25 children aged 7–10 years old participated in each group. Groups were matched in age, gender, and non-verbal IQ. Naming and word definition tasks were used to evaluate vocabulary knowledge in both groups. Results: Groups did not differ in the naming task; however, children with HF-ASDLI scored lower in the definition task. Both vocabulary tasks positively correlated with morpho-syntactic and overall language ability in both groups, although a significant positive correlation was detected between vocabulary knowledge and informational competence exclusively in the group with HF-ASDLI. Conclusions: Being in the HF-ASDLI group and having narrative ability significantly predicted participants’ performance in the definitions task, indicating that language impairment better explains vocabulary difficulties. These results agree with findings from the English language.