Some asymptotic properties of multivariable models identified by equation error techniques

\u3cp\u3eSome interesting properties are derived for simple equation-error-identification techniques - least squares and basic instrumental variable methods - applied to a class of linear, time-invariant, time-discrete multivariable models. The system at hand is not supposed to be contained in the chosen model set. Assuming that the input is unit variance white noise, it is shown that the Markov parameters of the system are estimated asymptotically unbiased over a certain interval around t equals 0.\u3c/p\u3

Some asymptotic properties of multivariable models identified by equation error techniques

\u3cp\u3eSome interesting properties are derived for simple equation error identification techniques, least squares and basic instrumental variable methods, applied to a class of linear time-invariant time-discrete multivariable models. The system at hand is not supposed to be contained in the chosen model set. Assuming that the input is unit-variance white noise, it is shown that the Markov parameters of the system are estimated asymptotically unbiased over a certain interval around t equals 0.\u3c/p\u3

The Monkey game: A computerized verbal working memory task for self-reliant administration in primary school children

Contains fulltext : 178254.pdf (publisher's version ) (Open Access)In two studies, the psychometric properties of an online self-reliant verbal working memory task (the Monkey game) for primary school children (6-12 years of age) were examined. In Study 1, children (n = 5,203) from 31 primary schools participated. The participants completed computerized verbal and visual-spatial working memory tasks (i.e., the Monkey game and the Lion game) and a paper-and-pencil version of Raven's Standard Progressive Matrices. Reading comprehension and math achievement test scores were obtained from the schools. First, the internal consistency of the Monkey game was examined. Second, multilevel modeling was used to examine the effects of classroom membership. Multilevel multivariate regression analysis was used to examine the Monkey game's concurrent relationship with the Lion game and its predictive relationships with reading comprehension and math achievement. Also, age-related differences in performance were examined. In Study 2, the concurrent relationships between the Monkey game and two tester-led computerized working memory tasks were further examined (n = 140). Also, the 1- and 2-year stability of the Monkey game was investigated. The Monkey game showed excellent internal consistency, good concurrent relationships with the other working memory measures, and significant age differences in performance. Performance on the Monkey game was also predictive of subsequent reading comprehension and mathematics performance, even after controlling for individual differences in intelligence. Performance on the Monkey game was influenced by classroom membership. The Monkey game is a reliable and suitable instrument for the online computerized and self-reliant assessment of verbal working memory in primary school children.16 p