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排序方式: 共有117条查询结果,搜索用时 15 毫秒
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This study tested a model in which perceived parental media mediation in social network games (SNGs) was related to adolescents' conceptual and attitudinal advertising literacies, both of which were in turn related to purchase request intention. The 780 participants, aged between 10 and 14 years, watched a video clip of SNG Habbo that included a commercial message and then completed a questionnaire. Perceived autonomy-supportive restrictive media mediation was found to be positively associated with understanding selling intention. Perceived autonomy-supportive active media mediation was positively related to understanding persuasive intention. Understanding persuasive intention was positively related to purchase request intention. 相似文献
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Koen Jochmans 《Journal of Applied Econometrics》2020,35(7):860-878
This paper concerns linear models for grouped data with group-specific effects. We construct a portmanteau test for the null of no within-group correlation beyond that induced by the group-specific effect. The approach allows for heteroskedasticity and is applicable to models with exogenous, predetermined, or endogenous regressors. The test can be implemented as soon as three observations per group are available and is applicable to unbalanced data. A test with such general applicability is not available elsewhere. We provide theoretical results on size and power under asymptotics where the number of groups grows but their size is held fixed. Extensive power comparisons with other tests available in the literature for special cases of our setup reveal that our test compares favorably. In a simulation study we find that, under heteroskedasticity, only our procedure yields a test that is both size correct and powerful. In a large data set on mothers with multiple births we find that infant birthweight is correlated across children even after controlling for mother fixed effects and a variety of prenatal care factors. This suggests that such a strategy may be inadequate to take care of all confounding factors that correlate with the mother's decision to engage in activities that are detrimental to the infant's health, such as smoking. 相似文献
96.
Koen Dewettinck Wim Vroonen 《International Journal of Human Resource Management》2017,28(17):2473-2502
Although researchers have extensively stressed the critical role of line managers in the effective implementation of HR practices, little is known about what exactly causes managers to enact these practices. In this paper, we draw from signaling theory, theory of planned behavior and social exchange theory to investigate both the antecedents and the outcomes of front-line management’s enactment of performance management (PM) activities. Results from two Belgian samples of 731 front-line managers and 425 employees show that line management’s beliefs regarding the usefulness of PM activities mediate the relationship between HR support and line management’s implicit person theory, on the one hand, and PM enactment, on the other. This relationship is moderated by the manager’ span of control. Furthermore, line management enactment shows to be positively related to employee engagement and job satisfaction. 相似文献
97.
The environments of public organizations have become substantially volatile due to economic and societal changes, requiring organizations to continuously adapt and to develop an innovation-oriented culture. In response to the multitude of challenges posed by this volatile environment, politicians in inter alia the executive and parliament impose structural reforms upon public organizations, implying that these organizations might be confronted with a series of structural reforms over their lifetime. This paper advances that a history of repeated and frequent structural reforms, irrespective of the underlying drivers of these reforms, has a negative effect on the innovation-orientedness of the organizational culture. We explore the link between an organization’s history of structural reforms and the degree to which the culture within these organizations is innovation-oriented. Results indicate that organizational turmoil generated by repeated structural reforms reduces innovativeness and suggest that too many structural reforms imposed in a too short time span will have detrimental side effects. 相似文献
98.
The hold period between the initial refusal and the follow-up conversion attempt may be used as a strategic tool to improve
conversion rates. We argue that longer hold periods result in better conversion rates, particularly among hard-to-convert
refusals. In this article we will first investigate to what extend and in which manner survey authorities exert this elapsed
time as an active survey instrument. Contact sheet data show that different national survey coordinators deploy different
strategies with regard to this hold period. In the Netherlands, intentional survey tactics can be disentangled, whereas Swiss
contact data show that the length of the hold period is a mere result other fieldwork conditions. Actual conversion success
seems to be consistently dependent upon the hold period between the initial refusal and the follow-up contact. 相似文献
99.
Koen V. Hindriks Dmytro Tykhonov Mathijs M. de Weerdt 《Group Decision and Negotiation》2012,21(1):49-77
When there is one buyer interested in obtaining a service from one of a set of sellers, multi-attribute or multi-issue auctions
can ensure an allocation that is efficient. Even when there is no transferable utility (e.g., money), a recent qualitative
version of the Vickrey auction may be used, the QVA, to obtain a Pareto-efficient outcome where the best seller wins. However,
auctions generally require that the preferences of at least one party participating in the auction are publicly known, while
often making this information public is costly, undesirable, or even impossible. It would therefore be useful to have a method
that does not impose such a requirement, but is still able to approximate the outcome of such an auction. The main question
addressed here is whether the Pareto-efficient best-seller outcome in multi-issue settings without transferable utility (such
as determined by the QVA) can be reasonably approximated by multi-bilateral closed negotiation between a buyer and multiple
sellers. In these closed negotiations parties do not reveal their preferences explicitly, but make alternating offers. The
main idea is to have multiple rounds of such negotiations. We study three different variants of such a protocol: one that
restricts the set of allowed offers for both the buyer and the seller, one where the winning offer is announced after every
round, and one where the sellers are only told whether they have won or not after every round. It is shown experimentally
that this protocol enables agents that can learn preferences to obtain agreements that approximate the Pareto-efficient best-seller
outcome as defined by the auction mechanism. We also show that the strategy that exploits such a learning capability in negotiation
is robust against and dominates a Zero Intelligence strategy. It thus follows that the requirement to publicly announce preferences
can be removed when negotiating parties are equipped with the proper learning capabilities and negotiate using the proposed
multi-round multi-bilateral negotiation protocol. 相似文献
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