scholarly journals An investigation of the effects of self-reported self-control strength on shooting performance

2020 ◽  
Author(s):  
Chris Englert ◽  
Anna Dziuba ◽  
Wanja Wolff ◽  
Louis-Solal Giboin
Keyword(s):  
Elite Athletes ◽  
Self Control ◽  
Morning Session ◽  
Afternoon Session ◽  
Task Duration ◽  
Control Strength ◽  
Perception Of Self ◽  
The Difference ◽  
Regular Training ◽  
Practical Implications

During professional shooting tournaments, which typically last multiple hours, athletes must stay focused at all times in order to perform at their highest levels. Sustaining attention over extended periods of time relies on self-control. Crucially, perceived state self-control strength appears to wane as a function of task duration, which ultimately can impair shooting performance. In the present study, we tested the assumption that the level of self-reported self-control strength decreases over the course of a 1-hour shooting task measured twice during a regular training day and separated by a 2-hour break. Additionally, we assumed that shooting performance would be linked with fluctuations in self-control. A total of 21 shooters (14 elite and 7 sub-elite) took part in this study and were asked to perform a series of 10 shots at a standardized target, five times in the morning and five times in the afternoon (i.e., 100 shots total). The participants also reported their perceived state self-control strength at the baseline (prior to the start of the morning session as well as the afternoon session) and after a series of 10 shots each in the morning and afternoon (i.e., 12 measurements in total). In line with our hypotheses, we observed that perceived state self-control diminished with the number of shots performed, and that perceived state self-control could explain shooting performance. Additionally, these observations could explain the difference in shooting performance between elite and sub-elite athletes. The results suggest that the perception of self-control strength is highly important for optimal shooting performance. Practical implications are discussed.

The Effect of Ego Depletion on Sprint Start Reaction Time

2014 ◽  
Vol 36 (5) ◽  
pp. 506-515 ◽  
Author(s):  
Chris Englert ◽  
Alex Bertrams
Keyword(s):  
Reaction Time ◽  
Reaction Times ◽  
Ego Depletion ◽  
The Self ◽  
Self Control ◽  
Control Strength ◽  
Increased Risk ◽  
False Start ◽  
Speed Up ◽  
Practical Implications

In the current study, we consider that optimal sprint start performance requires the self-control of responses. Therefore, start performance should depend on athletes’ self-control strength. We assumed that momentary depletion of self-control strength (ego depletion) would either speed up or slow down the initiation of a sprint start, where an initiation that was sped up would carry the increased risk of a false start. Applying a mixed between- (depletion vs. nondepletion) and within- (before vs. after manipulation of depletion) subjects design, we tested the start reaction times of 37 sport students. We found that participants’ start reaction times decelerated after finishing a depleting task, whereas it remained constant in the nondepletion condition. These results indicate that sprint start performance can be impaired by unrelated preceding actions that lower momentary self-control strength. We discuss practical implications in terms of optimizing sprint starts and related overall sprint performance.

scholarly journals Elites Do Not Deplete – No Effect of Prior Mental Exertion on Subsequent Shooting Performance in Elite Shooters

2021 ◽  
Vol 12 ◽  
Author(s):  
Chris Englert ◽  
Anna Dziuba ◽  
Louis-Solal Giboin ◽  
Wanja Wolff
Keyword(s):  
Elite Athletes ◽  
Self Control ◽  
Mixed Effect ◽  
Impaired Performance ◽  
Mixed Effect Models ◽  
Control Strength ◽  
Control Resource ◽  
Mental Exertion ◽  
Over Time ◽  
Linear Mixed Effect Models

In order to perform at the highest level, elite shooters have to remain focused during the whole course of a tournament, which regularly lasts multiple hours. Investing self-control over extended time periods is often associated with lower levels of perceived self-control strength (i.e., the subjective estimation of how much mental effort one is capable of investing in a given task) and impaired performance in several sports-related domains. However, previous findings on the effects of prior self-control efforts on shooting performance have been mixed, as elite shooters seem to be less affected by preceding self-control demanding tasks than sub-elite athletes. Therefore, the aim of the present study was to investigate the effects of self-control on shooting performance in elite shooters. Hence, we randomly assigned elite shooters to an experimental (n = 12) or a control condition (n = 11) and asked them to perform a series of 40 shots at baseline (T1) and again after a task which either did or did not require self-control (T2). Additionally, we continuously measured the shooters’ level of perceived self-control strength. We assumed that in elite athletes, shooting accuracy as well as the perceived level of self-control strength would not be significantly affected over time from T1 to T2 in both conditions. In line with our assumptions, Bayesian linear mixed effect models revealed that shooting performance remained relatively stable in both conditions over time and the conditions also did not differ significantly in their perceived levels of self-control strength. Contrary to resource-based theories of self-control, these results speak against the idea of a limited self-control resource as previous acts of self-control did not impair subsequent shooting performance in elite athletes.

Some Tears in Achilles Tatius (Achilles 6.7.3–7)

2018 ◽  
Author(s):  
G. O. Hutchinson
Keyword(s):  
Self Control ◽  
First Person ◽  
Achilles Tatius ◽  
Mind And Body ◽  
The Difference ◽  
The Mind

Another novelist provides in some respects a point in between Chariton and Heliodorus. His elaborate expatiation on tears and the lover put rhythm at the service of an intricate treatment of the mind and body, and a shrewd depiction of amorous self-control and manipulation. The first-person narrative adds a further stratum of sophistication to this handling of the speaker’s rival and enemy. Achilles Tatius demonstrates further, in contrast with Chariton, the range of possibilities for the exploitation of rhythm seen already in the difference of Chariton and Plutarch. Comparison with Heliodorus brings out Achilles’ elegance.

Insertion of vowels in English syllabic consonantal clusters pronounced by L1 Polish speakers

2021 ◽  
Vol 7 (1) ◽  
pp. 331-341
Author(s):  
Urszula Chwesiuk
Keyword(s):  
Language Learning ◽  
Teaching Methodology ◽  
English Studies ◽  
Vowel Reduction ◽  
Potential Influence ◽  
English System ◽  
The Difference ◽  
Practical Implications ◽  
Different Levels

Abstract The aim of this study was an attempt to verify whether Polish speakers of English insert a vowel in the word-final clusters containing a consonant and a syllabic /l/ or /n/ due to the L1–L2 transfer. L1 Polish speakers are mostly unaware of the existence of syllabic consonants; hence, they use the Polish phonotactics and articulate a vocalic sound before a final sonorant which is deprived of its syllabicity. This phenomenon was examined among L1 Polish speakers, 1-year students of English studies, and the recording sessions were repeated a year later. Since, over that time, they were instructed with regard to phonetics and phonology but also the overall practical language learning, the results demonstrated the occurrence of the phenomenon of vowel insertion on different levels of advanced command of English. If the vowels were inserted, their quality and length were monitored and analysed. With regard to the English system, pronouncing vowel /ə/ before a syllabic consonant is possible, yet not usual. That is why another aim of this study is to examine to what extent the vowels articulated by the subjects differ from the standard pronunciation of non-final /ə/. The quality differences between the vowels articulated in the words ending with /l/ and /n/ were examined as well as the potential influence from the difference between /l/ and /n/ on the occurrence of vowel reduction. Even though Polish phonotactics permit numerous consonantal combinations in all word positions, it proved to be challenging for L1 Polish speakers to pronounce word-final consonantal clusters containing both syllabic sonorants. This result carries practical implications for the teaching methodology of English phonetics.

Information Matrices in Latent-Variable Models

1989 ◽  
Vol 14 (4) ◽  
pp. 335-350 ◽  
Author(s):  
Robert J. Mislevy ◽  
Kathleen M. Sheehan
Keyword(s):  
Latent Variables ◽  
Latent Variable ◽  
Information Matrix ◽  
Missing Information ◽  
Variable Model ◽  
Related Information ◽  
Expected Information ◽  
The Difference ◽  
Information Matrices ◽  
Practical Implications

The Fisher, or expected, information matrix for the parameters in a latent-variable model is bounded from above by the information that would be obtained if the values of the latent variables could also be observed. The difference between this upper bound and the information in the observed data is the “missing information.” This paper explicates the structure of the expected information matrix and related information matrices, and characterizes the degree to which missing information can be recovered by exploiting collateral variables for respondents. The results are illustrated in the context of item response theory models, and practical implications are discussed.

The response of majority employee-owned firms during the pandemic compared to other firms

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Joseph Blasi ◽  
Douglas Kruse ◽  
Dan Weltmann
Keyword(s):  
Design Methodology ◽  
Employee Ownership ◽  
Social Implications ◽  
Firm Level ◽  
Content Type ◽  
Rutgers University ◽  
Employment Trends ◽  
The Difference ◽  
Industry Membership ◽  
Practical Implications

PurposeThe purpose of this study is to understand how majority employee-owned firms responded to the pandemic compared to firms that were not majority employee-owned. The Employee Ownership Foundation partnered with Rutgers University and the SSRS survey firm to survey ESOP and non-ESOP firms about their responses to the COVID-19 pandemic. A key purpose of the survey was to estimate firm-level changes in employment from mid-January to August (current employment figures were adjusted to August 5 using BLS industry employment trends). The survey also looked at other forms of adjustment and responses to the pandemic as reviewed below. The focus in this study is on the differences between firms that are majority owned by ESOPs and those that are not.Design/methodology/approachThe survey included 247 executives from ESOP Association member companies and 500 executives from an SSRS business panel constructed to be representative of US companies with 50 or more employees. The survey started on August 5 and ended on September 23, 2020.Findings(1) Majority ESOP firms had employment declines from January to August that were on average only one-fourth as large as for other firms. The difference is maintained when controlling for industry membership. (2) Majority ESOP firms were more likely to be declared “essential,” but the lower employment cutbacks among majority ESOP firms remain among essential and non-essential businesses. As essential businesses, majority ESOP firms were more likely receive Paycheck Protection Program or other government pandemic assistance, but both assistance recipients and non-recipients had lower employment cutbacks among majority ESOP firms. (3) The extent of employment cutbacks was higher for non-managers than for managers, but the manager/non-manager gap was higher among other firms than among majority ESOP firms.Research limitations/implicationsThis study supports empirical findings done previously.Practical implicationsThis study suggests to non-EO firms what they can do.Social implicationsThis study suggests strengths of EO firms.Originality/valueA very original and one-of-a-kind dataset.

Open Access Publishing, academic research and scholarly communication

2015 ◽  
Vol 39 (5) ◽  
pp. 637-648 ◽  
Author(s):  
Robin Osborne
Keyword(s):  
Open Access ◽  
Best Practice ◽  
Academic Research ◽  
Open Access Publishing ◽  
Free Access ◽  
Content Type ◽  
The Difference ◽  
Research Councils ◽  
Practical Implications ◽  
Wrong Place

Purpose – The purpose of this paper is to explore the difference between Open Access and accessibility, to argue that accessibility is the most crucial feature, and to suggest some ways in which Open Access militates against accessibility. Design/methodology/approach – Analysis of best practice by journals and monograph publishers is used to highlight the degree to which accessibility is enhanced by input from readers and editors. The expense of this, both real and hidden, is shown to be compatible only with difficulty with publishing methods where keeping costs low is essential, and Open Access alternatives that make available manuscripts “as submitted” are shown to make available less accessible scholarship. Findings – Scholarship is markedly improved by referees and editors; the emphasis needs to be put on making available the most accessible scholarship, not on making more scholarship available. Practical implications – Journals and publishers should concentrate on, and research councils and similar bodies insist upon, ensuring high quality critical review and editing, not cost-free access. Originality/value – The debate on Open Access has put its emphasis in the wrong place. Rather than easier access to more scholarship, increased resource devoted to pre-publication review, revision and editing is the most important development to ensure the greatest advances in research and scholarship.

The economic and financial viability of sheltered employment centres

2019 ◽  
Vol 57 (9) ◽  
pp. 2261-2283
Author(s):  
Vera Gelashvili ◽  
Eva María Aguilar Pastor ◽  
María-Jesús Segovia-Vargas ◽  
Maria-del-Mar Camacho-Miñano
Keyword(s):  
Training Programs ◽  
Similar Response ◽  
Economic Returns ◽  
Content Type ◽  
Strategic Plans ◽  
Low Levels ◽  
The Difference ◽  
Practical Implications ◽  
Very High

Purpose The purpose of this paper is to investigate whether sheltered employment centers (CEEs) which have a higher rate of professionalization of their managers have better economic returns than those that have a lower one. Design/methodology/approach A questionnaire has been drawn up for their managers. After collecting the answers, an index of professionalization classifies the CEEs with managers of high, medium and low levels of professionalism. This index is then correlated with the main financial ratios of companies. Findings The results show that companies with the highest level of managers’ professionalization, on average, have higher economic returns than companies with medium and low rates, although the difference is not very high. This study is an important contribution to academic literature, as it is the first to examine the professionalization of CEE managers. Research limitations/implications Finally, this paper is not short of limitations. The number of responses is small but there are similar studies with similar response rates. Additionally, the scarcity of responses may suggest that there is a lack of interest about the utility of professionalization by some CEEs managers because, perhaps, they do not have the necessary competences to understand its importance in management. Practical implications This study has some main implications for stakeholders: first, CEEs must pay more attention to the professionalization of their management team, because professionalization can lead to meeting its goals and guaranteeing the firm’s growth. Second, training programs in skills and attitudes should be designed to strengthen these competencies. Moreover, managers of social firms should know that the establishment of strategic plans will be useful to identify new opportunities in the market. Social implications Given the important role of these social firms for the employment of people with disabilities, training programs should be promoted by government in order to ensure the professionalization of these companies. Originality/value This research is an important contribution to the literature on this subject because there are no studies about the level of professionalization of CEEs, companies that represent an important value for the economy of a country.

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