Partial Verbal Redundancy in Multimedia Presentations for Writing Strategy Instruction

Multimedia instructional materials require learners to select, organize, and integrate information across multiple modalities. To facilitate these comprehension processes, a variety of multimedia design principles have been proposed. This study further explores the redundancy principle by manipulating the degree of partial redundancy between written and narrated content. Ninety high school students learned about cohesion via animated lesson videos from the Writing Pal intelligent tutoring system. Videos were crafted such that narrated and onscreen written content overlapped by 10%, 26%, or 50%. Across conditions, students gained significantly in their knowledge of cohesion‐building strategies and the effects of cohesion on writing quality. However, degree of redundancy did not influence learning gains. Additionally, although more‐skilled readers outperformed less‐skilled readers, reading skill did not interact with the degree of redundancy. These results provide evidence that a broad range of partially redundant multimedia materials may be viable instructional tools that benefit diverse learners. Copyright © 2015 John Wiley & Sons, Ltd.     

The development of route learning in Down syndrome,Williams syndrome and typical development: investigations with virtual environments

The ability to navigate new environments has a significant impact on the daily life and independence of people with learning difficulties. The aims of this study were to investigate the development of route learning in Down syndrome (N = 50), Williams syndrome (N = 19), and typically developing children between 5 and 11 years old (N = 108); to investigate use of landmarks; and to relate cognitive functions to route‐learning ability in these groups. Overall, measures of attention and long‐term memory were strongly associated with route learning, even once non‐verbal ability was controlled for. All of the groups, including 5‐ to 6‐year‐old TD children, demonstrated the ability to make use of all landmark types to aid route learning; those near junctions, those further from junctions, and also distant landmarks (e.g. church spire, radio mast). Individuals with WS performed better than a matched subset of TD children on more difficult routes; we suggest that this is supported by relatively strong visual feature recognition in the disorder. Participants with DS who had relatively high levels of non‐verbal ability performed at a similar level to TD participants.     

The foolishness of preaching

Journal of Religion and Health -     

The Effect of Generalized Compliments,Sex of Server,and Size of Dining Party on Tipping Behavior in Restaurants1

This study examined the effects of food servers' sex, the use of generalized compliments, and the size of the dining party on tipping behavior in restaurants. Four food servers (2 males, 2 females) waited on 360 parties eating dinner, and either complimented or did not compliment the parties on their dinner selections. Results indicated that food servers received significantly higher tips when complimenting their parties than when not complimenting them, although as the size of the party increased, the effectiveness of compliments decreased. These results and their implications are discussed.     

A General Family of Limited Information Goodness-of-Fit Statistics for Multinomial Data

Maydeu-Olivares and Joe (J. Am. Stat. Assoc. 100:1009–1020, 2005; Psychometrika 71:713–732, 2006) introduced classes of chi-square tests for (sparse) multidimensional multinomial data based on low-order marginal proportions. Our extension provides general conditions under which quadratic forms in linear functions of cell residuals are asymptotically chi-square. The new statistics need not be based on margins, and can be used for one-dimensional multinomials. We also provide theory that explains why limited information statistics have good power, regardless of sparseness. We show how quadratic-form statistics can be constructed that are more powerful than X ² and yet, have approximate chi-square null distribution in finite samples with large models. Examples with models for truncated count data and binary item response data are used to illustrate the theory.     

Creativity,Schizotypicality, and Mystical Experience: An Empirical Study

This study examined the commonalities and the differences between creativity and the schizophrenia spectrum. The variables measured were creativity, schizotypy, absorption, mystical experiences, spatial ability, balance, positive and negative presence, and neuroticism. Three community groups were recruited: 31 artists, 10 people with schizophrenia, and 31 comparisons matched for gender and age with the artists. A larger student group, consisting of 102 students, was also recruited to examine the correlations among the same variables within a larger, more normative, group. The largest commonality between the artist and the schizophrenic groups was the propensity to mystical experiences. The greatest differences between them were that the artists were higher in creativity, had better spatial ability, had better balance, had more positive states of presence, and were lower in neuroticism. In the student group, creativity was positively correlated with positive schizotypy, impulsive nonconformity, spatial ability, positive presence, absorption, and mystical experiences, although in the student group, the relation between creativity and mystical experiences was completely mediated by absorption.