Using Response Times to Model Not-Reached Items due to Time Limits

Missing values at the end of a test typically are the result of test takers running out of time and can as such be understood by studying test takers’ working speed. As testing moves to computer-based assessment, response times become available allowing to simulatenously model speed and ability. Integrating research on response time modeling with research on modeling missing responses, we propose using response times to model missing values due to time limits. We identify similarities between approaches used to account for not-reached items (Rose et al. in ETS Res Rep Ser 2010:i–53, 2010) and the speed-accuracy (SA) model for joint modeling of effective speed and effective ability as proposed by van der Linden (Psychometrika 72(3):287–308, 2007). In a simulation, we show (a) that the SA model can recover parameters in the presence of missing values due to time limits and (b) that the response time model, using item-level timing information rather than a count of not-reached items, results in person parameter estimates that differ from missing data IRT models applied to not-reached items. We propose using the SA model to model the missing data process and to use both, ability and speed, to describe the performance of test takers. We illustrate the application of the model in an empirical analysis.

     

Letter legibility and visual word recognition

Word recognition performance varies systematically as a function of where the eyes fixate in the word. Performance is maximal with the eye slightly left of the center of the word and decreases drastically to both sides of thisoptimal viewing position. While manipulations of lexical factors have only marginal effects on this phenomenon, previous studies have pointed to a relation between the viewing position effect (VPE) and letter legibility: When letter legibility drops, the VPE becomes more exaggerated. To further investigate this phenomenon, we improved letter legibility by magnifying letter size in a way that was proportional to the distance from fixation (e.g., TABLE). Contrary to what would be expected if the VPE were due to limits of acuity, improving the legibility of letters has only a restricted influence on performance. In particular, for long words, a strong VPE remains even when letter legibility is equalized across eccentricities. The failure to neutralize the VPE is interpreted in terms of perceptual learning: Since normally, because of acuity limitations, the only information available in parafoveal vision concerns low-resolution features of letters; even when magnification provides better information, readers are unable to make use of it.     

Der Analogiebegriff in der modernen Phyfik

Ohne Zusammenfassung     

Tatsachen und Theorien der Formbildung als Weg zum Lebensproblem

Ohne Zusammenfassung Die folgende Abhandlung ist die bedeutend erweiterte Ausarbeitung eines Vortrages, welcher am 9. Januar 1929 in einer Allgemeinen Versammlung der Zoologisch-Botanischen Gesellschaft in Wien, am 15. Oktober 1929 vor der Gesellschaft für empirische Philosophie in Berlin und am 30. Oktober 1929 in der Kantgesellschaft Karlsruhe gehalten wurde. Bei der Ausarbeitung wurde vor allem Bedacht genommen, Tatsachen und Theorien, die sich bereits in des Verf.s „Kritischer Theorie der Formbildung” (Schaxels Abh. z. th. B. 27, Berlin 1928) dargestellt finden, nur kurz zu behandeln, andererseits aber das genannte Werk hier durch die Verarbeitung der dort noch nicht behandelten Ergebnisse zu erg?nzen. Auch in die Literaturangabe wurden im allgemeinen nur an jenem Orte nicht angegebene Werke aufgenommen. Auf das erw?hnte Buch, das eine umfassende, kritische Darstellung der Theorien der Formbildung zum Ziele hat, sei hier ein für allemal hingewiesen.     

Parenting Behaviors of Mothers and Fathers of Preschool Age Children with Internalizing Disorders

This study investigated parenting behaviors of mothers and fathers of clinically anxious preschool children (with or without depressive comorbidity) and healthy comparison children. Studies assessing children from early school age onwards have found that parental control, rejection, and inconsistent discipline are associated with the presence of children’s internalizing symptoms/disorders. Despite the scarcity of studies investigating these associations at preschool age, we assumed that findings with older children would also apply to children in this age group. In a cross-sectional study we assessed N = 176 children of preschool age (M = 5; 2 years) and both of their parents. A diagnostic interview (Preschool Age Psychiatric Assessment) was conducted to determine children’s psychiatric diagnoses, yielding the following results: a group of n = 67 children with pure anxiety disorders (AD group), a group of n = 38 children with anxiety disorders with depressive comorbidity (AD/DC group), and a comparison group of n = 71 children without psychiatric disorders. Both parents completed the German extended version of the Alabama Parenting Questionnaire. We evaluated maternal depressive symptoms and children’s temperament as further correlates. All variables that differed significantly between groups were entered into multinomial logistic regression analyses to test which variables predict group membership. When comparing each of the two anxiety groups with the comparison group we obtained the following results: (1) Inconsistent paternal discipline and maternal depressive symptoms increased and children’s positive affectivity decreased the probability of children of being in the AD group rather than in the comparison group. (2) Maternal overinvolvement, maternal depressive symptoms and children’s negative affectivity increased and children’s positive affectivity decreased the probability of children of belonging to the AD/DC group rather than to the comparison group. When comparing the two anxiety groups with each other, we found that inconsistent paternal discipline increased and children’s negative affectivity decreased the probability of children of being in the AD group rather than in the AD/DC group. The results suggest that paternal parenting behaviors show different associations with internalizing disorders at preschool age than maternal parenting behaviors. This underlines the importance of including fathers in the prevention and treatment of internalizing disorders at preschool age.     

Judging the plausibility of arguments in scientific texts: a student–scientist comparison

The ability to evaluate scientific claims and evidence is an important aspect of scientific literacy and requires various epistemic competences. Readers spontaneously validate presented information against their knowledge and beliefs but differ in their ability to strategically evaluate the soundness of informal arguments. The present research investigated how students of psychology, compared to scientists working in psychology, evaluate informal arguments. Using a think-aloud procedure, we identified the specific strategies students and scientists apply when judging the plausibility of arguments and classifying common argumentation fallacies. Results indicate that students, compared to scientists, have difficulties forming these judgements and base them on intuition and opinion rather than the internal consistency of arguments. Our findings are discussed using the mental model theory framework. Although introductory students validate scientific information against their knowledge and beliefs, their judgements are often erroneous, in part because their use of strategy is immature. Implications for systematic trainings of epistemic competences are discussed.