Early Spelling Acquisition: Does Writing Really Beat the Computer?

1992 ◽  
Vol 15 (3) ◽  
pp. 223-228 ◽  
Author(s):  
Sharon Vaughn ◽  
Jeanne Shay Schumm ◽  
Jane Gordon

This research evaluated the efficacy of handwriting, letter tiles, and computer-based instruction on the early spelling acquisition of normal achieving (NLD) and learning disabled (LD) elementary students. The study replicated and extended the Cunningham and Stanovich (1990) study. Forty-eight primary-grade students (24 non-learning disabled; 24 learning disabled) received spelling training under three experimental conditions that involved different types of instructional activity: writing, sorting letter tiles, or typing on the computer. Results indicated no significant differences between the LD and NLD groups on words spelled correctly for any of the three conditions. Since the number of spelling words learned was low across conditions and groups, the number of correctly learned bigrams was examined. No within-group differences emerged for condition (writing, tile, computer); however, significant differences between the groups were found on number of bigrams learned for writing, tile, and computer, with the NLD group outperforming the LD group on all three conditions. Statistically significant time effects for bigrams were also noted for all three conditions. Unlike the Cunningham and Stanovich (1990) study, results did not replicate the superiority of the handwriting condition for the NLD group, nor was the handwriting condition found to be significantly more effective for the LD group.

2014 ◽  
Vol 37 (2) ◽  
pp. 157-164 ◽  
Author(s):  
Željko Pavičić ◽  
Mario Ostović ◽  
Sven Menčik ◽  
Anamaria Ekert Kabalin ◽  
Marija Vučemilo ◽  
...  

AbstractIn the present study, postural behaviour was compared between gilts kept in service unit with different types of flooring during all seasons. The study included four 28-day production cycles and 10 gilts per cycle, equally divided into a control and an experimental group. Control gilts were housed in gestation stalls with slatted concrete floor, whereas in the experimental group the floor was covered with an adjusted rubber mat. Postural behaviour of gilts was observed 4 times per cycle for 4 hours. Study results showed that during cooler seasons, gilts in concrete stalls spent more time standing and lying sternally, whereas gilts in matted stalls were mostly lying, predominantly laterally (P<0.001 all). There were no significant between group differences according to the time the gilts spent sitting or the frequency of changing posture in any season observed. Nevertheless, experimental animals spent significantly less time changing standing to both lying positions during all seasons (P<0.01 all). In conclusion, rubber mats may improve lying comfort in gilts; however, when using rubber mats, the house thermal conditions should be taken in consideration.


1989 ◽  
Vol 5 (4) ◽  
pp. 459-471 ◽  
Author(s):  
Susan H. Gray

This study contributes to the debate over how much control over instruction should be given to different types of learners and how much control should be left to the computer program in computer-based instruction. The effect of locus of control and student control over branching on ability to locate the answers contained in computer screens to a paper-and-pencil list of questions and the ability to retain learned information is explored. Student control conditions were branching for review only and total branching control to any topic in the sequence. Results using two-way analyses of variance indicated that students with high internality scores and computer sequence control over only review retrieved the most correct information. Students with control over only review retained the most correct information, regardless of locus of control scores. Students with higher internality scores also scored better on one of the software's two internal performance scores. Grade-point average was also positively correlated with accuracy of retrieval and retention.


2012 ◽  
Vol 50 (No. 2) ◽  
pp. 47-60 ◽  
Author(s):  
K. Nechvatalova ◽  
P. Knotigova ◽  
J. Krejci ◽  
M. Faldyna ◽  
E. Gopfert ◽  
...  

The aim of the study was to verify under experimental conditions the hypothesis that a reliable protection of piglets against Actinobacillus pleuropneumoniae (App) infection can be obtained by colostrum-derived antibodies and/or a low-dose infection from sows naturally infected with App. Twenty-eight piglets were allocated into four groups. Piglets of groups 1A and 1B were the progeny of App-seronegative sows, piglets of groups 2A and 2B originated from App-seropositive sows. At the age of 4 weeks, piglets in groups 1A and 2A were exposed to a low infection dose with the pathogenic strain of App serotype 9 (4 &times; 10<sup>4</sup> CFU/ml). At the age of 8 weeks, all four groups of piglets were exposed to the App serotype 9 challenge (2.5 &times; 10<sup>7</sup> CFU/ml). We compared the differences in clinical, radiological, pathological changes and cytological findings in blood and bronchoalveolar lavage samples between groups with different levels of antigen-specific immunity after challenge. Piglets that obtained colostrum-derived antibodies and experienced a low-dose App infection were best protected against App challenge. More apparent clinical and pathological changes were observed in groups protected with either only colostrum-derived antibodies or active immunity induced by a preceding low-dose infection. However, none of the types of protection prevented developing of the disease and characteristic changes in the lungs. Cell counts changes in blood and lavage gave evidence of only bacterial infection in progress; however, between-group differences were not marked. Antibodies (IgG, IgA) present in the respiratory tract at the time of challenge played a major role in protection against App infection.


1986 ◽  
Vol 2 (2) ◽  
pp. 169-187 ◽  
Author(s):  
Esther R. Steinberg ◽  
A. B. Baskin ◽  
Elfriede Hofer

This study investigated an alternative to traditional computer-based instruction in problem solving. The computer presented an organizational/memory tool as an aid to a student's own strategies rather than direct instruction in specific strategies. Our goals were: 1) to determine whether students would use the tool and 2) whether and how locus of control would affect use of the tool and problem-solving performance. Our four experimental conditions varied in the locus of control of the tool and in the availability of informational feedback, from total computer control with feedback to total learner control without feedback. Results showed that learners diduseorganizational/memory tools when not required to do so and that tools were most effective in the learner control with feedback condition. Instructional treatment affected learners' perception of the role of the computer and of the value of the tool. Results indicated the need to adaptively decrease feedback, and to adapt instructional techniques as learning progresses.


1985 ◽  
Vol 30 (2) ◽  
pp. 123-124
Author(s):  
Jill H. Larkin

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jiaqi Wang ◽  
Yan Chen ◽  
Qinyao Xu ◽  
Miaomiao Cai ◽  
Qian Shi ◽  
...  

AbstractSuperhydrophobic sponges have considerable potential for oil/water separation. Most of the methods used for superhydrophobic modification of sponges require toxic or harmful solvents, which have the drawbacks of hazardous to environment, expensive, and complex to utilize. Moreover, the hydrophobic layer on the surface of sponge is often easily destroyed. In this paper, a highly efficient superhydrophobic sponge with excellent reusability was developed by using a facile, simple and environmentally friendly dopamine biomimetic bonding method. Different types of sponges, such as melamine, polyethylene or polyurethane sponge wastes, were used as raw materials to prepare superhydrophobic sponges, which possess the advantages of inexpensive and abundant. The effects of different dopamine polymerization time and different hydrophobic agent dosage on the hydrophobicity and oil absorption capacity of melamine sponges were optimized. The study results showed that the water contact angle of the superhydrophobic sponge could reach 153° with excellent organic solvent absorption capacity of 165.9 g/g. Furthermore, the superhydrophobic sponge retained approximately 92.1% of its initial absorption capacity after 35 reutilization cycles. More importantly, the dopamine biomimetic bonding superhydrophobic modification method can be used for different types of sponges. Therefore, a universally applicable, facile, simple and environmentally friendly superhydrophobic modification method for sponges was developed.


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