References of "Keller, Ulrich 50002080"
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See detailUnterschiede zwischen Schulformen
Keller, Ulrich UL; Lorphelin, Dalia UL; Muller, Claire UL et al

in Martin, Romain; Brunner, Martin (Eds.) Épreuves Standardisées. Nationaler Bericht 2011‐2012 (2012)

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See detailDoes Childhood General Cognitive Ability at Age 12 Predict Subjective Well-Being at Age 52?
Chmiel, Magda UL; Brunner, Martin UL; Keller, Ulrich UL et al

in Journal of Research in Personality (2012), 46

Drawing on a broad, multidimensional conceptualization of subjective well-being, this study examined the power of childhood general cognitive ability to predict life satisfaction, satisfaction with eight ... [more ▼]

Drawing on a broad, multidimensional conceptualization of subjective well-being, this study examined the power of childhood general cognitive ability to predict life satisfaction, satisfaction with eight individual life domains, and the frequency of experiencing positive and negative affect in middle adulthood. Data were obtained from a representative Luxembourgish sample (N = 738; 53% female) in a longitudinal study conducted in 1968 and 2008. Childhood general cognitive ability was unrelated to life satisfaction, negatively related to negative affect and satisfaction with free time, and positively related to positive affect and satisfaction with some of the life domains associated with socioeconomic success (i.e. finances, self, housing, work, or health). This predictive power persisted even when childhood socioeconomic status was controlled. [less ▲]

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See detailThe Genetics Lab_Theoretical background & psychometric evaluation
Sonnleitner, Philipp UL; Brunner, Martin; Keller, Ulrich UL et al

Report (2012)

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See detailUser’s guide to apply, configure and adapt the Genetics Lab
Sonnleitner, Philipp UL; Mayer, Hélène; Keller, Ulrich UL et al

E-print/Working paper (2012)

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See detailGenetics Lab scoring algorithm
Keller, Ulrich UL; Sonnleitner, Philipp UL

Software (2012)

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See detailIntelligence as assessed by modern computer-based problem solving scenarios
Sonnleitner, Philipp UL; Brunner, Martin; Keller, Ulrich UL et al

Scientific Conference (2012)

Computer-based problem solving scenarios—so-called microworlds—have often been suggested as promising alternative assessment instruments of intelligence. Potential benefits compared to traditional paper ... [more ▼]

Computer-based problem solving scenarios—so-called microworlds—have often been suggested as promising alternative assessment instruments of intelligence. Potential benefits compared to traditional paper-pencil tests involve tracking of students’ mental representations of the problems as well as their problem solving strategies by means of behavioral data. Though, it is still topic of ongoing debate whether the skills assessed by such microworlds are distinct from or identical to the construct of intelligence as measured by conventional reasoning tests. To address this issue, we thoroughly investigated construct and incremental validity of a recently developed microworld, the Genetics Lab (Sonnleitner et. al, 2011). We obtained data from a multilingual and representative Luxembourgish student sample (N = 563) who completed the Genetics Lab and 3 reasoning scales of an established intelligence test battery. Results of a Confirmatory Factor Analysis suggest that the construct assessed by the Genetics Lab is largely identical to the construct of intelligence as measured by traditional reasoning scales. Incremental validity was found with respect to the performance in a national assessment of students’ competencies and performance in the PISA study of 2009. Thus, the notion of microworlds to be a valuable measure of intelligence is supported. [less ▲]

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See detailThe Genetics Lab. Acceptance and psychometric characteristics of a computer-based microworld to assess Complex Problem Solving
Sonnleitner, Philipp UL; Brunner, Martin; Greiff, Samuel UL et al

in Psychological Test and Assessment Modeling (2012), 54

Computer-based problem solving scenarios or “microworlds” are contemporary assessment instruments frequently used to assess students’ complex problem solving behavior – a key aspect of today’s educational ... [more ▼]

Computer-based problem solving scenarios or “microworlds” are contemporary assessment instruments frequently used to assess students’ complex problem solving behavior – a key aspect of today’s educational curricula and assessment frameworks. Surprisingly, almost nothing is known about their (1) acceptance or (2) psychometric characteristics in student populations. This article introduces the Genetics Lab (GL), a newly developed microworld, and addresses this lack of empirical data in two studies. Findings from Study 1, with a sample of 61 ninth graders, show that acceptance of the GL was high and that the internal consistencies of the scores obtained were satisfactory. In addition, meaningful intercorrelations between the scores supported the instrument’s construct validity. Study 2 drew on data from 79 ninth graders in differing school types. Large to medium correlations with figural and numerical reasoning scores provided evidence for the instrument’s construct validity. In terms of external validity, substantial correlations were found between academic performance and scores on the GL, most of which were higher than those observed between academic performance and the reasoning scales administered. In sum, this research closes an important empirical gap by (1) proving acceptance of the GL and (2) demonstrating satisfactory psychometric properties of its scores in student populations. [less ▲]

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See detailReading comprehension strategies of biliterate students in German and French
Ugen, Sonja UL; Brunner, Martin UL; Fischbach, Antoine UL et al

Scientific Conference (2011, July)

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See detailThe Genetics Lab - A new Computer-Based Problem Solving Scenario to assess Intelligence
Sonnleitner, Philipp UL; Brunner, Martin; Keller, Ulrich UL et al

Scientific Conference (2011)

Assessments of intelligence by means of paper-pencil tests faced several critiques that point to their lack of face validity, insufficient coverage of the definition of intelligence, their sensitivity to ... [more ▼]

Assessments of intelligence by means of paper-pencil tests faced several critiques that point to their lack of face validity, insufficient coverage of the definition of intelligence, their sensitivity to the emotional state of the test taker, and the danger of getting outdated. The present paper discusses to what extent these limitations can be overcome by computer-based problem solving scenarios–so-called microworlds. Generally speaking, microworlds are supposed to be highly accepted by test takers, to provide process measures by directly tracing problem solving behavior, and to realize game-like characteristics that may increase test motivation and reduce test anxiety. To capitalize on these potential advantages, we developed the microworld Genetics Lab that was completed by a large, heterogeneous sample of more than 600 Luxembourgish students. Performance scores were derived for students’ problem solving strategies as well as their mental problem representations–important cognitive data which are not accessible with typical paper-pencil tests. Analyses of the psychometric characteristics of the Genetics Lab empirically underscored the construct validity for the derived performance scores. For example, process oriented measures of strategy use were found to possess discriminant validity with respect to grades. Further, acceptance and induced test anxiety of the Genetics lab was explored relative to a paper-pencil measure of intelligence. Our results show that the Genetics Lab is a reliable and valid assessment instrument and emphasize the benefits of using microworlds for assessing intelligence. [less ▲]

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See detailGeschlechtsunterschiede in Lesen und Mathematik: Ergebnisse aus 69 Ländern.
Brunner, Martin; Keller, Ulrich UL; Sonnleitner, Philipp UL et al

Scientific Conference (2011)

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See detailChallenges of modern Computer Based Assessment: Usability, Scoring, and “Digital Natives”
Sonnleitner, Philipp UL; Brunner, Martin; Keller, Ulrich UL et al

Scientific Conference (2011)

In recent years, computer based assessment has undergone substantive change. Test developers as well as test users have become aware of the fact that computers can do more than administrate traditional ... [more ▼]

In recent years, computer based assessment has undergone substantive change. Test developers as well as test users have become aware of the fact that computers can do more than administrate traditional (paper-pencil) item formats like multiple-choice. More complex computer based item types allow tracking test takers’ mental representations of the problem or even their problem solving strategies by means of behavioral data. An example for such a modern item type are microworlds – dynamically changing problem solving scenarios with which the test taker has to interact. However, with the advent of complex item types, new challenges arise. First, usability is at stake - test takers do not intuitively know what to do or how to interact with complex tasks. Second, a massive load of data is produced and it gets difficult for the test developer to decide on relevant scores. Third, today’s students - so-called “digital natives”- grew up with computers and therefore set high quality standards for software applications. They may quickly loose trust and interest in tests with old fashioned design, cumbersome handling or even malfunctioning software. On basis of the Genetics Lab – a microworld developed to assess general mental ability – these challenges of modern computer based assessment are discussed. Three consecutive small scale studies were carried out to investigate usability issues, validate scoring algorithms and to ensure acceptance among students. The results demonstrate the importance of considering usability during the test development process, particularly with regard to scoring. The modification of conventional test development procedures for modern computer based assessment is suggested. Moreover, possibilities to satisfy even a critical target population are presented. [less ▲]

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See detailAssessing Intelligence for Education in the 21st Century: The Benefits of Microworlds
Sonnleitner, Philipp UL; Brunner, Martin; Keller, Ulrich UL et al

Scientific Conference (2011)

Computer-based problem solving scenarios—so-called microworlds—are contemporary educational assessment instruments of intelligence that offer several benefits compared to traditional paper-pencil tests ... [more ▼]

Computer-based problem solving scenarios—so-called microworlds—are contemporary educational assessment instruments of intelligence that offer several benefits compared to traditional paper-pencil tests. This involves tracking of students’ mental representations of the problems as well as their problem solving strategies by means of behavioral data which provides key information for educational interventions. Moreover, microworlds realize game-like characteristics that may increase test motivation and reduce test anxiety. In the present study, the Genetics Lab, a newly developed microworld, was completed by a representative sample of more than 800 Luxembourgish students. Students chose among three different languages (German, French and English) in which the problem content of the Genetics Lab was presented. The present paper analyzes the psychometric properties of the various performance scores derived for the Genetics Lab with respect to their relations to school grades, and measurement invariance across gender, chosen test language, and migration background. Moreover, a direct comparison with traditional measures of intelligence demonstrated construct validity of the performance scores of the Genetics Lab. In sum, the results obtained for the Genetics Lab show the benefits of behavioral data obtained for computer-based problem-solving scenarios and support the notion of microworlds to be a valuable measure of intelligence. [less ▲]

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See detailGeoGebraPrim - GeoGebra for Primary School
Kreis, Yves UL; Dording, Carole; Keller, Ulrich UL

Scientific Conference (2010, June 30)

The aims of the project are on one hand the improvement of the children’s understanding of the elementary geometric concepts and on the other side a deeper insight in the bond of geometry and algebra. The ... [more ▼]

The aims of the project are on one hand the improvement of the children’s understanding of the elementary geometric concepts and on the other side a deeper insight in the bond of geometry and algebra. The study consists in a pre-/post-test scenario combined with observations of particularly interesting situations. All in all 59 children of 9 years have participated; about half of them have followed a traditional paper/pencil geometry course while the others have been mixing experiences on the computer to the traditional ones. In last years presentation we have given a short overview of the project, explained the educational and technological concepts used and presented first results of the study. This year we will present the outcomes of the project based on statistical analysis of the children's answers comparing the different questions/tests as well as our observations during class. [less ▲]

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See detailZusammenfassung der Ergebnisse von PISA 2009
Boehm, Bettina; Brunner, Martin UL; Dierendonck, Christophe UL et al

in SCRIPT; EMACS (Eds.) PISA 2009. Nationaler Bericht Luxemburg (2010)

Detailed reference viewed: 79 (9 UL)