scholarly journals The Effects of Peer Group Heterogeneity on the Production of Human Capital at West Point

2009 ◽  
Vol 1 (4) ◽  
pp. 69-84 ◽  
Author(s):  
David S Lyle

Understanding how heterogeneity in peer group composition affects academic attainment has important implications for how schools organize students in group settings. The random assignment of cadets to companies at West Point affords an opportunity to investigate this issue empirically. Estimates of the impact of peer group heterogeneity in math SAT scores on freshmen-year academic performance reveals that more heterogeneous peer groups have positive effects on individual grades. High-ability peers account for most of the positive effect, while low-ability peers have no measureable effect. (JEL I23, J24, M54)

2019 ◽  
Vol 3 (4) ◽  
pp. 209-222
Author(s):  
Philipp K. Görs ◽  
Henning Hummert ◽  
Anne Traum ◽  
Friedemann W. Nerdinger

Digitalization is a megatrend, but there is relatively little knowledge about its consequences for service work in general and specifically in knowledge-intensive business services (KIBS). We studied the impact of digitalization on psychological consequences for employees in tax consultancies as a special case of KIBS. We compare two tax consulting jobs with very different job demands, those of tax consultants (TCs) and assistant tax consultants (ATCs). The results show that the extent of digitalization at the workplace level for ATCs correlates significantly positively with their job satisfaction. For TCs, the same variable correlates positively with their work engagement. These positive effects of digitalization are mediated in the case of ATCs by the impact on important job characteristics. In the case of TCs, which already have very good working conditions, the impact is mediated by the positive effect on self-efficacy. Theoretical and practical consequences of these results are discussed.


2020 ◽  
Vol 218 ◽  
pp. 04014
Author(s):  
Yixing Jin ◽  
Peiying Wu ◽  
Cheng Lin ◽  
Yingda Wang

This study investigated the impact of emotional leadership of leaders on organizational commitment of hotel employees, as well as the mediating role of job satisfaction. The results indicate that: (1) Emotional leadership and job satisfaction have positive effects on organizational commitment. (2) Emotional leadership has a positive effect on job satisfaction. (3) Job satisfaction plays a mediating role between emotional leadership and organizational commitment.


2021 ◽  
Vol 2 (1) ◽  
pp. 12
Author(s):  
Suyanto Suyanto ◽  
Moses Glorino Rumambo Pandin

The development of nursing, especially related to the nursing intervention approach, is running so fast. This can be seen from the use of peer group support in nursing interventions in individual humans. The purpose of this literature is to find the impact of implementing nursing interventions using a peer group support approach. This literature review method uses JBI and Prisma on 120 articles taken from journal databases, namely Scopus, PubMed and ScienceDirect. From the articles analyzed, it was found that the application of peer groups can improve individual abilities both in psychological and behavioral aspects. The application of the peer group approach is able to be one of the approaches in the world of nursing in carrying out nursing actions today.


2019 ◽  
Vol 79 (4) ◽  
pp. 656-667 ◽  
Author(s):  
Ana María Leiva ◽  
Adrián Albarrán ◽  
Daniela López ◽  
Gladys Vidal

Abstract The aim of this study was to evaluate the phytotoxicity of wastewater treated with horizontal subsurface flow (HSSF) constructed wetlands (CWs) and activated sludge (AS) system using disinfection treatment such chlorination and ultraviolet (UV) system. To assess the impact of the reuse of different effluents (HSSF-Cl, HSSF-UV, AS-Cl and AS-UV), bioassays using seeds of Raphanus sativus (R. sativus) and Triticum aestivum (T. aestivum), were performed on both Petri dishes and soil. Different treated wastewater concentrations were varied (6.25%, 12.5%, 25%, 50% and 100%) and the percentage of germination inhibition (PGI), percentage of epicotyl elongation (PEE) and germination index (GI) were determined. Positive effects (PGI and PEE <0% and GI >80%) of HSSF-Cl, HSSF-UV, AS-Cl and AS-UV effluents on germination and epicotyl elongation of R. sativus and T. aestivum were observed in Petri dishes bioassays. However, toxic effects of HSSF-Cl, HSSF-UV and AS-Cl on seeds germination and epicotyl elongation of both plant species were detected in soil samples (PGI and PEE >0% and GI <80%). Only R. sativus seeds to be irrigated with AS-UV achieved GI values above 86% for all concentrations evaluated. These results indicated that AS-UV effluent had a positive effect on seeds germination and can be recommended for treated wastewater reuse in agricultural irrigation.


2021 ◽  
Vol 9 (3) ◽  
pp. 631-636 ◽  
Author(s):  
Dewi Dewi ◽  
Ferdian Hajadi ◽  
Yunita Wijaya Handranata ◽  
Maria Grace Herlina

The purpose of this study is to determine the impact of service quality and customer satisfaction on customer loyalty of the laundry service industry in Indonesia. The research methods used were quantitative, and analyzed using multiple linear regression methods. Data were obtained by distributing questionnaires to 100 respondents in Jakarta from February to March 2020. The selection of respondents used a purposive sampling technique, with the criteria of using laundry services in the past. Findings from this research revealed a significant positive effect of service quality toward customer satisfaction; and both service quality and customer satisfaction also have significant and positive effects towards customer loyalty in laundry services in Indonesia. From this research, it is expected that the entrepreneur in the laundry service industry would better understand the importance of service quality, customer satisfaction and its correlation to customer loyalty in order to improve firm sales performance.


Author(s):  
Daniel Boon Yann Ooi

The communal nature of religion suggests peer effects exist in religiosity, potentially through positive spillovers in religious participation and social formation of religious beliefs. Using seven measures of religiosity, we estimate positive and negative peer effects in each case using peer group composition. We use a simultaneous equation model to account for self-selection into religious peer groups, and while we find positive peer effects are insignificant, there are significant negative peer effects operating through non-religious friends. This suggests peers affect social formation of religious beliefs, rather than through positive spillovers in religious participation.


2017 ◽  
Vol 25 (2) ◽  
pp. 217-232
Author(s):  
Eunji Seo ◽  
Katsuyoshi Takashima

Purpose The purpose of this study is to investigate the negative impact of horizontal conflict on vertical conflict in a triadic configuration, which is based on the supposition that buyers who experience horizontal conflict due to competition with other buyers are motivated to limit vertical conflict to better cooperate with store staff. Design/methodology/approach This study tests the hypotheses with an AMOS-based structure equation model based on survey data of 236 merchandise managers at Japanese retailers. Findings The study’s findings demonstrate that process conflict concerning resource and role allocation, negatively affects the task conflict and relationship conflict involved in vertical interactions. The results suggest that conflict between buyers is an accelerative mechanism affecting the construction of cooperative relationships between buyers and store staff. Originality/value Previous studies have discussed the possibility of positive effects arising from process conflict. In this study, the authors found that horizontal process conflict tolerates vertical conflict statistically and identified a new positive effect of process conflict.


2017 ◽  
Vol 9 (7) ◽  
pp. 815-824 ◽  
Author(s):  
Robert Busching ◽  
Barbara Krahé

This article investigated how the development of deviant behavior in adolescence is influenced by the variability of deviant behavior in the peer group. Based on the social information-processing (SIP) model, we predicted that peer groups with a low variability of deviant behavior (providing normative information that is easy to process) should have a main effect on the development of adolescents’ deviant behavior over time, whereas peer groups in which deviant behavior is more variable (i.e., more difficult to process) should primarily impact the deviant behavior of initially nondeviant classroom members. These hypotheses were largely supported in a multilevel analysis using self-reports of deviant behavior in a sample of 16,891 adolescents in 1,308 classes assessed at two data waves about 1-year apart. The results demonstrate the advantages of studying cross-level interactions to clarify the impact of the peer environment on the development of deviant behavior in adolescence.


2021 ◽  
pp. 105756772110386
Author(s):  
Anke Erdmann

Despite the substantive evidence on the victim-offender overlap from various national contexts, comprehensive examinations for Germany are lacking. This article provides insights into peer group-related correlates of the victim-offender overlap by specifically differentiating the roles of victims, offenders, and victim-offenders. The analysis examines risk factors for involvement in violence using a sample of 3,519 14- and 16-year-old students from a large crime study conducted in Germany. Applying multinomial logistic regression, the risk of being a victim-only, offender-only, or victim-offender is predicted by peer group characteristics such as frequency of meeting, group composition, delinquent norms, and routine activities with friends. The results show that proximity to friends and delinquent norms of peers significantly influence victimization, offending, and the victim-offender overlap. Regarding group composition, violent offending and being a victim-offender occurred more often in male-dominated mixed-gender friend groups, whereas victimization risk is not affected by group composition. Frequent alcohol consumption within the group is associated with victimization risk and the victim-offender overlap, whereas going out is associated with offending and the overlap. The findings underline that the peer context is not only of importance for explaining delinquency but also for unraveling victimization and the victim-offender overlap.


1998 ◽  
Vol 37 (2) ◽  
pp. 105-112 ◽  
Author(s):  
J. Hejzlar ◽  
P. Dolejš ◽  
J. Komárková ◽  
J. Sed′a ◽  
K. Šimek ◽  
...  

The impact of planktivorous fish on the plankton community structure and character of aquatic organic matter was studied by a meso-scale enclosure experiment in a stratified reservoir. Aims of the study were (i) to examine the response of the communities with and without herbivorous zooplankton to an increased input of phosphorus and (ii) to determine the composition and coagulation properties of the organic matter produced by these communities. The concentration and composition of organic matter were affected both in the enclosure with planktivorous fish (F), where high algal biomass developed, and in the enclosure without fish (Z), where algae were maintained at a low concentration by zooplankton grazing. Although differences between the enclosures in concentrations of total dissolved organic matter and its hydrophobic, hydrophilic and neutral/basic fractions were relatively small, coagulation properties of the organics differed substantially. Particulate and dissolved organic matter produced in enclosure F had a positive effect on the efficiency of alum coagulation in contrast to the less readily separable organics produced in enclosure Z. The results indicate that pelagic food web manipulations to maintainin low phytoplankton biomass by zooplankton grazing may not always have positive effects on the treatability of water by coagulation.


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