Marie Wiberg - Academia.edu (original) (raw)

Papers by Marie Wiberg

Research paper thumbnail of THE SWEDISH DRIVING-LICENSE TEST A Summary of Studies from the Department of Educational Measurement, Umeå University

Research paper thumbnail of A comparison of two approaches to correction of restriction of range in correlation analysis

A common problem in predictive validity studies in the educational and psychological fields, e.g.... more A common problem in predictive validity studies in the educational and psychological fields, e.g. in educational and employment selection, is restriction in range of the predictor variables. There are several methods for correcting correlations for restriction of range. The aim of this paper was to examine the usefulness of two approaches to correcting for range restriction; Thorndike's case 2 correction and ML estimates obtained from the EM algorithm, by comparing the corrected correlations with the correlation from an unrestricted sample. The unrestricted sample consisted of examinees who took the practical Swedish driving-license test regardless of their result on the theory test. Examinees that passed the theory test and took the practical test were regarded as a restricted sample. The result provided empirical support for the appropriateness of Thorndike's case 2 correction method. Although using the EM algorithm yielded a good estimate of the correlation in the unrestricted sample, further studies are needed on this topic.

Research paper thumbnail of Development and Construct Validation of the Swedish Zimbardo Time Perspective Inventory

European Journal of Psychological Assessment, 2011

In this study, we developed and evaluated a Swedish version of the Zimbardo Time Perspective Inve... more In this study, we developed and evaluated a Swedish version of the Zimbardo Time Perspective Inventory (ZTPI;. The original version of the ZTPI was extended by including a Future Negative scale, and the psychometric properties of both versions were examined in a sample of 419 adults aged between 18 and 80 years. Confirmatory factor analysis (CFA) provided support both for the original five-factor solution proposed by in a Swedish sample and for a six-factor solution with the Future Negative scale as an independent factor. These findings extend the original ZTPI and suggest that negative feelings about the future constitute a central dimension of the temporal perspective. The Swedish Zimbardo Time Perspective Inventory (S-ZTPI) provides a reliable and valid instrument for measuring time perspective in the context of Swedish research and to be beneficial in its application in multiple areas of psychology and related disciplines.

Research paper thumbnail of The Swedish driver licensure examination: exploration of a two-stage model

Journal of Safety Research, 2004

Introduction: Sweden, together with several countries in the world, has no compulsory educational... more Introduction: Sweden, together with several countries in the world, has no compulsory educational requirement prior to the drivers license examination. Having a valid license examination (i.e., a knowledge test and a driving test) is therefore important in order to ensure competent drivers. Method: The aim of this paper is to explore the possibility of a two stage testing approach for the Swedish licensure examination. In order to explore the relationship between the knowledge test and the road test, a descriptive and a logistic regression approach were carried out. Results: The result indicates that how the driving candidates perform on the road test depends on their performance on the knowledge test. Therefore, the Swedish drivers licensing examination is suitable for a two-stage testing model.

Research paper thumbnail of The Swedish driver licensure examination: exploration of a two-stage model

Journal of Safety Research, 2004

Introduction: Sweden, together with several countries in the world, has no compulsory educational... more Introduction: Sweden, together with several countries in the world, has no compulsory educational requirement prior to the drivers license examination. Having a valid license examination (i.e., a knowledge test and a driving test) is therefore important in order to ensure competent drivers. Method: The aim of this paper is to explore the possibility of a two stage testing approach for the Swedish licensure examination. In order to explore the relationship between the knowledge test and the road test, a descriptive and a logistic regression approach were carried out. Results: The result indicates that how the driving candidates perform on the road test depends on their performance on the knowledge test. Therefore, the Swedish drivers licensing examination is suitable for a two-stage testing model.

Research paper thumbnail of Differential Item Functioning in Mastery Tests: A Comparison of Three Methods Using Real Data

International Journal of Testing, 2009

The aim of this study was to examine log linear modelling (LLM) compared with logistic regression... more The aim of this study was to examine log linear modelling (LLM) compared with logistic regression (LR) and Mantel-Haenszel (MH) test for detecting Differential Item Functioning (DIF) in a mastery test. The three methods were chosen because they have similar components. The results showed fairly high matching percentages together with high correlations among the methods regarding size of DIF. The MH approach yielded more conservative results than both LR and LLM. LLM and LR were fairly consistent with each other. The LLM has the advantage of dividing the test scores into certain intervals, which is of special interest in mastery tests. This partition of test scores was also tried with LR and MH with different results.

Research paper thumbnail of Differential Item Functioning in Mastery Tests: A Comparison of Three Methods Using Real Data

International Journal of Testing, 2009

The aim of this study was to examine log linear modelling (LLM) compared with logistic regression... more The aim of this study was to examine log linear modelling (LLM) compared with logistic regression (LR) and Mantel-Haenszel (MH) test for detecting Differential Item Functioning (DIF) in a mastery test. The three methods were chosen because they have similar components. The results showed fairly high matching percentages together with high correlations among the methods regarding size of DIF. The MH approach yielded more conservative results than both LR and LLM. LLM and LR were fairly consistent with each other. The LLM has the advantage of dividing the test scores into certain intervals, which is of special interest in mastery tests. This partition of test scores was also tried with LR and MH with different results.

Research paper thumbnail of THE SWEDISH DRIVING-LICENSE TEST A Summary of Studies from the Department of Educational Measurement, Umeå University

Research paper thumbnail of A comparison of two approaches to correction of restriction of range in correlation analysis

A common problem in predictive validity studies in the educational and psychological fields, e.g.... more A common problem in predictive validity studies in the educational and psychological fields, e.g. in educational and employment selection, is restriction in range of the predictor variables. There are several methods for correcting correlations for restriction of range. The aim of this paper was to examine the usefulness of two approaches to correcting for range restriction; Thorndike's case 2 correction and ML estimates obtained from the EM algorithm, by comparing the corrected correlations with the correlation from an unrestricted sample. The unrestricted sample consisted of examinees who took the practical Swedish driving-license test regardless of their result on the theory test. Examinees that passed the theory test and took the practical test were regarded as a restricted sample. The result provided empirical support for the appropriateness of Thorndike's case 2 correction method. Although using the EM algorithm yielded a good estimate of the correlation in the unrestricted sample, further studies are needed on this topic.

Research paper thumbnail of Development and Construct Validation of the Swedish Zimbardo Time Perspective Inventory

European Journal of Psychological Assessment, 2011

In this study, we developed and evaluated a Swedish version of the Zimbardo Time Perspective Inve... more In this study, we developed and evaluated a Swedish version of the Zimbardo Time Perspective Inventory (ZTPI;. The original version of the ZTPI was extended by including a Future Negative scale, and the psychometric properties of both versions were examined in a sample of 419 adults aged between 18 and 80 years. Confirmatory factor analysis (CFA) provided support both for the original five-factor solution proposed by in a Swedish sample and for a six-factor solution with the Future Negative scale as an independent factor. These findings extend the original ZTPI and suggest that negative feelings about the future constitute a central dimension of the temporal perspective. The Swedish Zimbardo Time Perspective Inventory (S-ZTPI) provides a reliable and valid instrument for measuring time perspective in the context of Swedish research and to be beneficial in its application in multiple areas of psychology and related disciplines.

Research paper thumbnail of The Swedish driver licensure examination: exploration of a two-stage model

Journal of Safety Research, 2004

Introduction: Sweden, together with several countries in the world, has no compulsory educational... more Introduction: Sweden, together with several countries in the world, has no compulsory educational requirement prior to the drivers license examination. Having a valid license examination (i.e., a knowledge test and a driving test) is therefore important in order to ensure competent drivers. Method: The aim of this paper is to explore the possibility of a two stage testing approach for the Swedish licensure examination. In order to explore the relationship between the knowledge test and the road test, a descriptive and a logistic regression approach were carried out. Results: The result indicates that how the driving candidates perform on the road test depends on their performance on the knowledge test. Therefore, the Swedish drivers licensing examination is suitable for a two-stage testing model.

Research paper thumbnail of The Swedish driver licensure examination: exploration of a two-stage model

Journal of Safety Research, 2004

Introduction: Sweden, together with several countries in the world, has no compulsory educational... more Introduction: Sweden, together with several countries in the world, has no compulsory educational requirement prior to the drivers license examination. Having a valid license examination (i.e., a knowledge test and a driving test) is therefore important in order to ensure competent drivers. Method: The aim of this paper is to explore the possibility of a two stage testing approach for the Swedish licensure examination. In order to explore the relationship between the knowledge test and the road test, a descriptive and a logistic regression approach were carried out. Results: The result indicates that how the driving candidates perform on the road test depends on their performance on the knowledge test. Therefore, the Swedish drivers licensing examination is suitable for a two-stage testing model.

Research paper thumbnail of Differential Item Functioning in Mastery Tests: A Comparison of Three Methods Using Real Data

International Journal of Testing, 2009

The aim of this study was to examine log linear modelling (LLM) compared with logistic regression... more The aim of this study was to examine log linear modelling (LLM) compared with logistic regression (LR) and Mantel-Haenszel (MH) test for detecting Differential Item Functioning (DIF) in a mastery test. The three methods were chosen because they have similar components. The results showed fairly high matching percentages together with high correlations among the methods regarding size of DIF. The MH approach yielded more conservative results than both LR and LLM. LLM and LR were fairly consistent with each other. The LLM has the advantage of dividing the test scores into certain intervals, which is of special interest in mastery tests. This partition of test scores was also tried with LR and MH with different results.

Research paper thumbnail of Differential Item Functioning in Mastery Tests: A Comparison of Three Methods Using Real Data

International Journal of Testing, 2009

The aim of this study was to examine log linear modelling (LLM) compared with logistic regression... more The aim of this study was to examine log linear modelling (LLM) compared with logistic regression (LR) and Mantel-Haenszel (MH) test for detecting Differential Item Functioning (DIF) in a mastery test. The three methods were chosen because they have similar components. The results showed fairly high matching percentages together with high correlations among the methods regarding size of DIF. The MH approach yielded more conservative results than both LR and LLM. LLM and LR were fairly consistent with each other. The LLM has the advantage of dividing the test scores into certain intervals, which is of special interest in mastery tests. This partition of test scores was also tried with LR and MH with different results.