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Johannes Stricker

Johannes Stricker
Heinrich Heine University Düsseldorf and University of Wuppertal

PhD (Dr. rer. nat.)

About

34
Publications
16,336
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832
Citations
Introduction
I am a postdoctoral researcher and a clinical psychologist at the Heinrich Heine University Düsseldorf and the University of Wuppertal.

Publications

Publications (34)
Article
Full-text available
The Almost Perfect Scale-Revised (APS-R) and its short form (SAPS) are among the most-established multidimensional perfectionism measures. Yet, investigations into the APS-R/SAPS nomological networks have mainly been limited to the level of broader personality traits. This reliance on trait-level associations hampers the conceptual understanding of...
Article
Full-text available
A central innovation in the International Classification of Diseases 11th Revision (ICD-11) is a dimensional personality disorder model differentiating five personality trait domains. The Personality Inventory for ICD-11 (PiCD) is a frequently used measure to assess these components of the ICD-11 personality disorder model. Conceptually, the ICD-11...
Article
The International Classification of Diseases 11th Revision (ICD-11) contains a dimensional model of personality disorder. Beyond general personality dysfunction, this model accommodates six personality descriptors depicting maladaptive personality characteristics. Perfectionism is a well-researched multidimensional personality disposition with stro...
Article
Full-text available
The successful integration of asylum seekers into the labor market is among the most pressing issues of refugee-receiving countries. We construe co-workers’ willingness to collaborate with asylum seekers as a crucial factor for integration and investigate its antecedents. Linking Allport’s contact theory with team diversity theories, we propose tha...
Article
Full-text available
Background and Objectives. Perfectionism is a multidimensional personality trait often viewed as a risk factor for developing test anxiety. A recent meta-analysis showed positive correlations of perfectionism facets with test anxiety dimensions. However, all previous research into the perfectionism-test anxiety relation has been cross-sectional. Th...
Article
Fractions are hard to understand for students. According to Siegler’s integrated theory, magnitude understanding is central to numerical development. Whole-number magnitude understanding can be improved by serious games that include practicing mapping numbers onto number lines or similar one-dimensional visuospatial representations. These games wer...
Article
Full-text available
The view that perfectionists are prone to experiencing sleep disturbance is widely held. Yet, almost three decades of empirical research have yielded conflicting results. Whereas some researchers viewed perfectionism as a risk factor for sleep disturbance, others spoke of “adaptive” or “positive” forms of perfectionism in the context of sleep. The...
Article
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Ellis et al. (2021, this issue; in the following abbreviated as EEA) conducted a conceptual replication and extension of a recent meta-analysis relating number line estimation to broader mathematical competence (Schneider et al., 2018; in the following: SEA). EEA pooled and analyzed data from seven new studies and compared the results to SEA’s find...
Article
Full-text available
E-mental health (eMH) encompasses the use of digital technologies to deliver, support, or enhance mental health services. Despite the growing evidence for the effectiveness of eMH interventions, the process of implementation of eMH solutions in healthcare remains slow throughout Europe. To address this issue, the e-Mental Health Innovation and Tran...
Article
When students learn a scientific theory that conflicts with their earlier naïve theories, the newer and more correct knowledge does not always replace the older and more incorrect knowledge. Both may coexist in a learner's long-term memory. Using a new speeded reasoning task, Shtulman and Valcarcel (2012) showed that naïve theories interfere with r...
Article
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A large amount of literature is available for researchers who are interested in performing meta-analyses in psychology. However, due to a large number of available sources and meta-analytic approaches, it can be difficult to get started with a meta-analysis when prior experiences are limited. In this annotated reading list, we provide an overview o...
Article
Full-text available
Perfectionism is a multidimensional personality trait whose facets differentially relate to indicators of psychological functioning, such as global self-esteem. There has been some theoretical disagreement whether perfectionism affects global self-esteem, or vice versa. This question merits renewed attention due to increasing efforts to prevent the...
Article
Zusammenfassung Die COVID-19-Pandemie und ihre Folgen (z. B. Kontaktbeschränkungen) stellen die psychiatrisch-psychotherapeutische Versorgung national und international vor neue Herausforderungen. Dieser Beitrag gibt einen Überblick über digitale Verfahren zur Behandlung psychischer Störungen unter Pandemiebedingungen und zur Reduktion pandemiebedi...
Article
Full-text available
Many persons with personality disorder experience psychological distress. The International Classification of Diseases, 11th Revision (ICD-11) contains a dimensional personality disorder model that comprises personality dysfunctioning, 5 maladaptive personality trait domains, and a borderline pattern qualifier. Research on the relations between the...
Article
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Easily comprehensible summaries of scholarly articles that are provided alongside 'ordinary' scientific abstracts, so-called plain language summaries, can be a powerful tool for communicating research findings to a wider audience. Using an experimental within-person-design in a preregistered study (N = 166), we showed that the comprehensibility for...
Article
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Background. The quality of mental health services is crucial for the effectiveness and efficiency of mental healthcare systems, symptom reduction, and quality of life improvements in persons with mental illness. In recent years, particularly care coordination (i.e., the integration of care across different providers and treatment settings) has rece...
Article
Background: Among the many reasons for the stigmatization of mental illnesses and those affected by it, the supposedly insufficient treatability plays a central role. In fact, treatability is not worse compared to various somatic diseases, although different factors impair the use and thus the effect of optimal treatment options. This is where meas...
Article
From January 2022, the WHO member countries shall start implementing the mortality and morbidity statistics (MMS) version of the eleventh revision of the International Classification of Diseases (ICD-11). Regarding mental, behavioural or neurodevelopmental disorders, there are substantial changes from ICD-10 to ICD-11. The subchapter for schizophre...
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[Letter to the editor] *Both authors contributed equally.
Article
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There are different views on whether perfectionism is a characteristic of intellectually gifted students. Over the last decades, comparative studies of intellectually gifted and non-gifted students have produced inconsistent results. This heterogeneity in findings might be explained by underpowered studies and the multidimensional nature of perfect...
Article
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In 2019, the Robert Koch Institute (RKI) as the national Public Health Institute in Germany was commissioned by the Federal Ministry of Health to develop a concept for continuous health reporting on mental health in Germany. Meaningful data is required since mental health has strong public health relevance due to high prevalence and burden of psych...
Article
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Findings from psychological research are usually difficult to interpret for non-experts. Yet, non-experts resort to psychological findings to inform their decisions (e.g., whether to seek a psychotherapeutic treatment or not). Thus, the communication of psychological research to non-expert audiences has received increasing attention over the last y...
Article
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In this web-based field study, we compared the diagnostic accuracy and clinical utility of 10 selected mental disorders between the ICD-11 Clinical Descriptions and Diagnostic Guidelines (CDDG) and the ICD-10 CDDG using vignettes in a sample of 928 health professionals from all WHO regions. On average, the ICD-11 CCDG displayed significantly higher...
Article
Full-text available
This article provides a brief overview of the changes from ICD-10 to ICD-11 regarding the classification of mental, behavioral, or neurodevelopmental disorders. These changes include a new chapter structure, new diagnostic categories, changes in diagnostic criteria, and steps towards dimensionality. Additionally, we review evaluative field studies...
Article
There is a long-lasting debate regarding the long-term antipsychotic treatment of schizophrenia. The most frequently advocated strategy is continued antipsychotic maintenance treatment (i.e., continuous treatment with a constant dose of antipsychotic medication after symptom remission). Yet, because of the potential side effects of continued antips...
Article
How do persons who expect perfection from others experience and behave in daily life situations? To address this question, we investigated the relations of other-oriented perfectionism with the Big Five personality traits, the Big Five personality states (i.e., self-reported short-term behavior), and perceived situation characteristics using Experi...
Article
Perfectionism is a multidimensional personality disposition comprising different facets that relate differentially to various indicators of psychological and academic functioning. The Integrated Model of the Development of Perfectionism posits that child, parental, and environmental variables influence perfectionism development. So far, environment...
Article
Full-text available
Spectacular cases of scientific misconduct have contributed to concerns about the validity of published results in psychology. In our systematic review, we identified 16 studies reporting prevalence estimates of scientific misconduct and questionable research practices (QRPs) in psychological research. Estimates from these studies varied due to dif...
Article
The number line estimation task is widely used to investigate mathematical learning and development. The present meta-analysis statistically synthesized the extensive evidence on the correlation between number line estimation and broader mathematical competence. Averaged over 263 effect sizes with 10576 participants with sample mean ages from 4 to...
Article
Full-text available
Worry refers to the experience of uncontrollable negative thoughts. Cognitive models suggest that the combination of negative information processing biases along with diminished attentional control contribute to worry. In the current study we investigate whether promoting a) adaptive interpretation bias and b) efficient deployment of attentional co...
Article
Full-text available
Many studies have investigated the association between numerical magnitude processing skills, as assessed by the numerical magnitude comparison task, and broader mathematical competence, e.g. counting, arithmetic, or algebra. Most correlations were positive but varied considerably in their strengths. It remains unclear whether and to what extent th...
Poster
Article retractions in health-related fields of psychology: Are there reasons for concern?

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