Stefan Keller
Biographic Data
| ID | 5145483 |
|---|---|
| NAME | Stefan Keller |
| GIVEN NAMES | Stefan |
| FAMILY NAME | Keller |
| SIGNATURE | KELLER S |
| AFFILIATIONS | Zurich University of Teacher Education |
| ORCID | 0000-0003-0115-5314 |
| VERIFIED | Yes |
| TOTAL WORKS | 10 |
| TOTAL CITATIONS | 11 |
| AUTHOR COUNT | 10 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2003 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 2 |
Pursuing fair writing assessment: Halo effects in primary school foreign language writing in grade six
Assessing the writing competence of pupils learning English as a foreign language (EFL) at primary school is associated with specific challenges because of learners’ limited language resources. This study investigates the extent to which characteristics of their texts trigger so-called halo effects. Halo effects are an assessment bias where the quality of one feature unintentionally influences the evaluation of other aspects. The study examines h…
Enhancing School Students’ Self-Regulated Learning through Generative AI Support: A Randomized Controlled Trial
Self-regulated learning (SRL) is a critical competency for academic success and lifelong learning, yet providing personalized SRL support in real-time classroom settings remains challenging. In this randomized controlled trial, we investigated whether generative-AI-(GenAI)-based interventions can effectively support SRL in secondary school students. Drawing on an integrative model of self-regulation in education, the study contrasted two types of…
Testing teacher judgments comprehensively: Accuracy, halo, frame of reference, strategy, and personality effects in holistic and analytic assessments of student essays
Language quality, content, structure: What analytic ratings tell us about EFL writing skills at upper secondary school level in Germany and Switzerland
Argumentative writing in English as a foreign language (EFL) is an important skill in upper secondary education in Germany and Switzerland. This article provides insights into students’ EFL writing skills in the aspects of language quality, content, and structure (N = 2314 TOEFL argumentative essays from two time-points, beginning and end of Year 11). These essays were analyzed by trained human raters using analytic assessment rubrics for each as…
English writing skills of students in upper secondary education: Results from an empirical study in Switzerland and Germany
Assessment of 10-nm Particle Number (PN) Portable Emissions Measurement Systems (Pems) for Future Regulations
The particle number (PN) emissions of vehicles equipped with particulate filters are low. However, there are technologies that can have high PN levels, especially below the currently lower regulated particle size of 23 nm. Sub-23-nm particles are also considered at least as dangerous as the larger ultrafine particles. For this reason, the European Union (EU) is planning to regulate particles down to 10 nm. In this study we compared prototype port…
Judgment accuracy in experienced versus student teachers: Assessing essays in English as a foreign language
The time-varying association between perceived stress and hunger within and between days
Combining Rhetoric and Pragmatics to Read Othello
This article shows how combining the disciplines of ancient rhetoric and modern “pragmatics” opens up new approaches to the substance of Shakespeare's dramatic language, the fundamental medium of his art. Focusing on the “Temptation Scene” from Othello, it offers detailed analyses of rhetorical figures, combining them with “Politeness Theory” and “Relevance Theory”. From this point of view, rhetoric appears both ancient and modern, a guide to exp…
Shakespeare?s Rhetorical Fingerprint. New Evidence on the Authorship of Titus Andronicus
(2003). Shakespeare’s Rhetorical Fingerprint. New Evidence on the Authorship of Titus Andronicus. English Studies: Vol. 84, No. 2, pp. 105-118
Judgment accuracy in experienced versus student teachers: Assessing essays in English as a foreign language
The time-varying association between perceived stress and hunger within and between days
Combining Rhetoric and Pragmatics to Read Othello
This article shows how combining the disciplines of ancient rhetoric and modern “pragmatics” opens up new approaches to the substance of Shakespeare's dramatic language, the fundamental medium of his art. Focusing on the “Temptation Scene” from Othello, it offers detailed analyses of rhetorical figures, combining them with “Politeness Theory” and “Relevance Theory”. From this point of view, rhetoric appears both ancient and modern, a guide to exp…
Shakespeare?s Rhetorical Fingerprint. New Evidence on the Authorship of Titus Andronicus
(2003). Shakespeare’s Rhetorical Fingerprint. New Evidence on the Authorship of Titus Andronicus. English Studies: Vol. 84, No. 2, pp. 105-118
Combining Rhetoric and Pragmatics to Read Othello
This article shows how combining the disciplines of ancient rhetoric and modern “pragmatics” opens up new approaches to the substance of Shakespeare's dramatic language, the fundamental medium of his art. Focusing on the “Temptation Scene” from Othello, it offers detailed analyses of rhetorical figures, combining them with “Politeness Theory” and “Relevance Theory”. From this point of view, rhetoric appears both ancient and modern, a guide to exp…
The time-varying association between perceived stress and hunger within and between days
English writing skills of students in upper secondary education: Results from an empirical study in Switzerland and Germany
Assessment of 10-nm Particle Number (PN) Portable Emissions Measurement Systems (Pems) for Future Regulations
The particle number (PN) emissions of vehicles equipped with particulate filters are low. However, there are technologies that can have high PN levels, especially below the currently lower regulated particle size of 23 nm. Sub-23-nm particles are also considered at least as dangerous as the larger ultrafine particles. For this reason, the European Union (EU) is planning to regulate particles down to 10 nm. In this study we compared prototype port…
Judgment accuracy in experienced versus student teachers: Assessing essays in English as a foreign language
Language quality, content, structure: What analytic ratings tell us about EFL writing skills at upper secondary school level in Germany and Switzerland
Argumentative writing in English as a foreign language (EFL) is an important skill in upper secondary education in Germany and Switzerland. This article provides insights into students’ EFL writing skills in the aspects of language quality, content, and structure (N = 2314 TOEFL argumentative essays from two time-points, beginning and end of Year 11). These essays were analyzed by trained human raters using analytic assessment rubrics for each as…
Pursuing fair writing assessment: Halo effects in primary school foreign language writing in grade six
Assessing the writing competence of pupils learning English as a foreign language (EFL) at primary school is associated with specific challenges because of learners’ limited language resources. This study investigates the extent to which characteristics of their texts trigger so-called halo effects. Halo effects are an assessment bias where the quality of one feature unintentionally influences the evaluation of other aspects. The study examines h…
Enhancing School Students’ Self-Regulated Learning through Generative AI Support: A Randomized Controlled Trial
Self-regulated learning (SRL) is a critical competency for academic success and lifelong learning, yet providing personalized SRL support in real-time classroom settings remains challenging. In this randomized controlled trial, we investigated whether generative-AI-(GenAI)-based interventions can effectively support SRL in secondary school students. Drawing on an integrative model of self-regulation in education, the study contrasted two types of…
Testing teacher judgments comprehensively: Accuracy, halo, frame of reference, strategy, and personality effects in holistic and analytic assessments of student essays
Psychology (6 works) · Linguistics (5 works) · Foreign language (4 works) · Mathematics education (4 works) · Pedagogy (4 works) · Computer Science (3 works) · Educational Strategies and Epistemologies (3 works) · Philosophy (3 works) · Writing and Handwriting Education (3 works) · Art (2 works)