1,720,965 research outputs found
Two thumbs and one index: A comparison of manual coordination in touch-typing and mobile-typing
No full textIt has been extensively demonstrated that in touch-typing, manual alternation is performed faster than manual repetition (see i.e. Rumelhart & Norman, 1982), due to parallel activation of successive keystrokes. In this experiment, we tested whether the manual coordination patterns typical of touch-typing can be observed in mobile-typing.We recruited skilled touch-typists and divided them into two groups depending on their typing habits on the mobile device. The "one-hand" group typed with one index finger on the mobile, and therefore produced words exclusively through manual repetition. The "two-hands" group used two thumbs, and therefore produced words through a combination of mobile-typing repetitions and alternations. The two groups were tested in a typing to dictation task with both a standard keyboard and a mobile keyboard. Results showed that manual alternation and manual repetition patterns are similar in touch-typing and in mobile-typing. For the "two-hands" group, the mean interkeystroke intervals (IKIs) for touch-typing decreased as manual alterations in words increased in both touch- and mobile-typing. The "one-hand" group showed an opposite pattern in mobile-typing. Bigram frequency was correlated with IKIs per bigrams in both tasks and groups, but the correlation for the "one-hand" group in mobile-typing was different. Our results suggest that manual coordination processes are the same in touch-typing and in mobile-typing despite different effectors, provided that both hands are used to type
Corrigendum to “Two thumbs and one index: A comparison of manual coordination in touch-typing and mobile-typing” [Acta Psychologica 167 (2016) 16–23](S0001691816300518)(10.1016/j.actpsy.2016.03.007)
No full textWe provide here a corrected version of Table 4. The changes made to the previous version are the following: First, we changed the correlation coefficient nomenclature “r” for “rs”, as it is considered a more appropriate nomenclature of the Spearman's correlation. Furthermore, a column was missing in the original table. Seven coefficients were reported instead of the eight coefficients mentioned in the body of the text. The missing data is the correlation coefficient between bigram frequency and IKIs for the “two-hands” group in the mobile-typing task, for the No transition IKIs. The missing value is rs = -.50***. In addition, we corrected two coefficients, one in the fourth column (rs =-.39** instead of -.41*) and one in the sixth column (rs =-.45*** instead of -.54**). Finally, we corrected the asterisks that indicate significant p values: in fact, the p-values are lower than previously indicated. The changes in the new version of Table 4 do not alter the results of the analysis and their discussion. As we wrote in the Section 3.1.2, results indicated a strong negative correlation between bigram frequency and IKIs in all the analyzed samples, except for the “one-hand” group in the mobile-typing task (for transition bigrams), where no correlation was found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Motor expertise for typing impacts lexical decision performance
No full textThe massive shift in writing habits calls for a better understanding of the possible consequences of typing practice on language processing, including reading. To assess a possible impact of typing knowledge on word recognition, we built a set of words and pseudowords differing by their ratio of bimanual transitions between letters, an index of typing difficulty for experts. An effect of typing difficulty was observed in expert participants who were actually typing the items and not in a control group of hunt-and-peck typists. We then tested whether word recognition, measured with the task of lexical decision, was impacted by the typing difficulty of words. We found that lexical decision latencies varied as a function of typing difficulty, but differently for experts and non-experts. The effect was mostly driven by pseudowords. This suggests that motor representations built during the practice of typing have a collateral effect on visual recognition processes. The implications for education are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Two thumbs and one index: A comparison of manual coordination in touch-typing and mobile-typing
No full textInternational audienceno abstrac
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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