The empirical derivation of equations for predicting subjective textual information

Parameters pertaining to information processing by human beings have, in the past, been determined by learning and memory experiments with nonsense syllables, number sequences, etc. However, in the real world we are concerned with the processing of meaningful information, not senselles texts. Therefore, the determination of subjective information directly from meaningful material becomes extremely important in the instruction-learning process.This study derives an equation for predicting the subjective textual information contained in a text of material written in the English language. Specifically, this investigation describes, by a mathematical equation, the relationship between the subjective information content of written textual material and the relative number of errors committed by a learner when asked to predict, letter by letter, the content of given textual material. This relationship shows that the subjective information of a given text for a specific learner is directly proportional to the number of wrongly guessed signs made by that learner. This is expressed mathematically by% MathType!MTEF!2!1!+- % feaafeart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamysaiabg2 % da9iaaiodacaGGUaGaaGymaiaabccacaWGfbaaaa!3B57! \[ I = 3.1{\rm{ }}E \] 0935 0212 VWhere: I = Information in bits E = Number of wrongly guessed signsThe application of Shannon's guessing procedure (1951) in this study permits the measurement of the subjective information of a given text for a specific learner. Unlike senseless texts, the subjective information of a meaningful text varies from learner to learner. Therefore, the derived equation permits the measurement of information in terms of a value that is dependent not only upon the inherent qualities of the subject matter, but also upon the internal state of the learner.The derived equation for the English language is then compared to an equation derived by Weltner (1967) for the German language and found to be remarkably similar.This work was, in part, supported by United States Air Force Contract F41609-71-C-0027 entitled Flying Training Research on Airborne and Ground Training Systems, and a research grant from Arizona State University.     

Current conceptions of literacy – insights from work with children and older learners with sensory needs

There have been many efforts to conceptualise literacy, both in terms of its essence and component parts, but it has proved difficult to define. This paper considers work that is undertaken with children and older learners with sensory needs in order to promote the early stages of literacy. Recent government initiatives aimed at fostering literacy development have caused teachers of children with sensory needs to re-examine their practice. The paper discusses early literacy as part of children's attempts to communicate and describes children with sensory needs engaging in a range of activities that are termed 'literacy' by those working with them. By taking into account these activities, the authors endeavour to throw light on the broader questions around concepts of literacy.     

The role of communication in managing reductions in work force

Reductions in work force (downsizing, delayering, resizing, outplacement, layoffs, demassing) are used by organizations to achieve desired economic goals and ensure survival. However, these reductions often negatively affect the work behaviors and attitudes of continuing employees and thus, may detract from the success of the reduction in work force. The purpose of this study was to increase our understanding of the effects of multiple workforce reductions on survivors by extending Brockner's (1988) model and outlining the role of communication in the process so that researchers and practitioners can better predict and control for the effects of workforce reductions. In pursuit of this goal, a causal model of effects on survivors was developed and then tested with data collected in a large, midwestern insurance company that implemented two workforce reductions.

The hypothesized model was inconsistent with the data and subsequently was rejected. A revised model was then tested and found to fit at three time periods. The revised model demonstrates survivor reactions to reductions are complex and change over time and in response to multiple reductions. The main conclusion was that managers can influence survivor information deprivation, career future uncertainty, work satisfaction, and propensity for turnover by paying attention to, and if possible controlling, organizational identification, financial rewards, work team communication support, and manager communication support. The results also suggest that survivor reactions to prior organizational interventions may influence the success of current interventions.     

A Two-Stage Approach to Synthesizing Covariance Matrices in Meta-Analytic Structural Equation Modeling

A great obstacle for wider use of structural equation modeling (SEM) has been the difficulty in handling categorical variables. Two data sets with known structure between 2 related binary outcomes and 4 independent binary variables were generated. Four SEM strategies and resulting apparent validity were tested: robust maximum likelihood (ML), tetrachoric correlation matrix input followed by SEM ML analysis, SEM ML estimation for the sum of squares and cross-products (SSCP) matrix input obtained by the log-linear model that treated all variables as dependent, and asymptotic distribution-free (ADF) SEM estimation. SEM based on the SSCP matrix obtained by the log-linear model and SEM using robust ML estimation correctly identified the structural relation between the variables. SEM using ADF added an extra parameter. SEM based on tetrachoric correlation input did not specify the data generating process correctly. Apparent validity was similar for all models presented. Data transformation used in log-linear modeling can serve as an input for SEM.     

Curriculum Continuity and Transfer from Primary to Secondary School: the case of history

The transfer of children from primary school to secondary school has long been seen as a problematic area. The National Curriculum was depicted as offering a solution to some of the transfer problems by providing for curriculum continuity across the primary-secondary divide. This paper reports the results of a study of curriculum continuity in one subject, history, now that a National Curriculum has been in place for several years. It reports that teachers continue to see problems with the transfer and that secondary school teachers still incline to a ‘fresh start’ approach to year 7 pupils. There is also some evidence of a lack of curriculum consistency within the secondary schools involved in the research, there are differences between primary and secondary schools in the range of teaching and learning methods employed, there is some decline in pupils’ ratings of their experience of secondary education across year 7 and there are signs of some gender differences in these ratings. The conclusion is that there is a case for saying that the new arrangements have not alleviated the problems associated with the transfer.     

Faculty and Male Football and Basketball Players on University Campuses

Abstract

Four experiments examined the influence of observing a correct model (CM), a learning sequence model (LSM), and an incorrect model (IM) on the performance of two motor skills. The results of experiment 1 showed that the CM and LSM conditions facilitated performance on the first 10 trails, but not thereafter when compared to the IM group and a control group. Experiment 2 showed that performance estimation was improved by observing the CM and LSM conditions, indicating that information was conveyed by observing these models. Experiment 3 revealed pronounced modeling effects on a difficult motor skill for the CM and LSM conditions which were sustained throughout the 60 practice trials. Experiment 4 showed no differences in performance between a live model demonstrating correctly and a filmed model demonstrating correctly. The findings from the 4 experiments were discussed in terms of the information conveyed through observation and its function in the development of the cognitive components of a motor skill.     

The influence of crank rate on peak oxygen consumption during arm crank ergometry

The aim of this study was to assess the influence of three imposed crank rates on the attainment of peak oxygen consumption ( V O 2peak ) and other physiological responses during incremental arm crank ergometry. Twenty physically active, although non-specifically trained, males volunteered for the study. They completed an exercise protocol using an electrically braked arm ergometer (Lode Angio, Groningen, Netherlands) at crank rates of 60, 70 and 80 rev·min -1 . The order of tests was randomized and they were separated by at least 2 days. Peak V O 2 was significantly higher ( P ? 0.05) at 70 and 80 rev·min -1 than at 60 rev·min -1 . Peak ventilation volume increased as a function of crank rate and was higher ( P ? 0.05) at 80 than at 60 rev·min -1 . Peak heart rate was higher ( P ? 0.05) at 70 and 80 rev·min -1 than at 60 rev·min -1 . Furthermore, 70 and 80 rev·min -1 resulted in an extended test time compared with 60 rev·min -1 . The greater physiological responses observed during the tests at the two faster crank rates might have been the result of a postponement of acute localized neuromuscular fatigue, allowing for more work to be completed. We recommend, therefore, that an imposed crank rate between 70 and 80 rev·min -1 should be used to elicit V O 2peak and other physiological responses in arm crank ergometry.