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The study proposes and tests a self‐concept‐based perspective for the effects of formal mentoring support on affective organizational commitment (AOC) via multiple mediators. Using time‐lagged multi‐source dyadic data (n = 203), we demonstrate that formal mentoring support significantly influences newcomer–protégés' AOC through an underlying self‐evaluative mechanism indicated by organization‐based self‐esteem (OBSE), even in the presence of a well‐established alternative mediator (perceived organizational support; POS). Moreover, we further demonstrate when or under what circumstances such effects might be attenuated or exaggerated by introducing a salient boundary condition to such a process (i.e., perceived mentor organizational prototypicality). As the findings reveal, by making newcomer–protégés feel good about themselves in the workplace (i.e., perceive self‐value) formal mentoring support can also promote organizational commitment, effects that are likely to be amplified when the formal mentor is perceived to be prototypical of the organization. Thus, bridging the mentoring and socialization literatures, the inclusion of our proposed mediators and moderator and testing their relationships simultaneously not only provides a more nuanced view of the underlying mechanisms through which the effects of formal mentoring support are channeled to influence newcomer–protégés' work attitudes but it offers new theoretical elaboration and contextual understanding that we hope will prompt future research and be of benefit to human resource practitioners. Implications to theory, practice and future research directions are discussed. [ABSTRACT FROM AUTHOR]

Enhanced Conversational Recast (ECR) is an input-based grammatical intervention approach developed from research on statistical learning. Recent research reported evidence demonstrating the efficacy of ECR on the learning of grammatically obligatory morphemes in English-speaking preschool children with developmental language disorder (DLD). This single-case experimental design study, which adopted a within-participant design with single baseline and control item, investigated the efficacy of ECR in promoting the learning of aspect markers in four Cantonese-speaking typically-developing preschool children. Two children demonstrated positive outcomes with the progressive aspect marker 'gan2' given 12 ECR training sessions within a mean dosage of 288. One of these children demonstrated statistically significant gains in the percentage of correct use in the probes. The lack of positive outcomes in the other two children on the earlier developing aspect marker 'zo2' and limitations of the study were discussed. With early evidence established in the typically developing children in this study, future research on Cantonese speaking children with DLD can be considered.

Online influencer marketing (OIM) has become an integral component of brands' marketing strategies; however, marketers lack an adequate understanding of its scope, effectiveness, and potential threats. To fill this gap, this article first describes the phenomenon's background, defines OIM, and delineates its unique features to set the conceptual boundaries for the new concept. Drawing insights from practitioner and consumer interviews, and in line with social capital theory, the authors propose that OIM can be understood as leveraging influencer resources (including follower networks, personal positioning, communication content, and follower trust) to enhance a firm's marketing communication effectiveness. Six novel propositions illustrate the benefits and potential threats of OIM, which may spur progress toward a theory of OIM. Finally, this article outlines key strategies for effectively managing OIM and identifies important literature-practice gaps to suggest avenues for further research., Author(s): Fine F. Leung [sup.1] , Flora F. Gu [sup.1] , Robert W. Palmatier [sup.2] Author Affiliations: (1) grid.16890.36, 0000 0004 1764 6123, Faculty of Business, The Hong Kong Polytechnic [...]

The number of teaching assistants (TAs) working in mainstream schools has soared in recent years as students with special educational needs (SEN) are integrated into regular classrooms. However, research on TAs is rare. This study investigated whether and how work engagement mediates the relationship between self-efficacy and job satisfaction among 292 Chinese TAs working in Hong Kong mainstream schools. Survey data were analyzed using partial least squares structural equation modeling (PLS-SEM). Supported by the social cognitive theory of self-efficacy and self-determination theory of work engagement, our results showed that TAs' self-efficacy is positively related to their job satisfaction through the mediation of work engagement. Implications for an appropriate focus on enhancing TAs' self-efficacy through classroom experiences and training courses are discussed.

Influencer marketing initiatives require firms to select and incentivize online influencers to engage their followers on social media in an attempt to promote the firms' offerings. However, limited research considers the costs of influencer marketing when evaluating these campaigns' effectiveness, particularly from an engagement elasticity perspective. Moreover, it is unclear whether and how marketers could enhance influencer marketing effectiveness by strategically selecting influencers, targeting their followers, or managing content. This study draws on a communication model to examine how factors related to the sender of a message (influencer), the receiver of the message (influencer's followers), and the message itself (influencer's posts) determine influencer marketing effectiveness. The findings show that influencer originality, follower size, and sponsor salience enhance effectiveness, and posts that announce new product launches diminish it. Several tensions arise when firms select influencers and manage content: Influencer activity, follower–brand fit, and post positivity all exert inverted U-shaped moderating effects on influencer marketing effectiveness, suggesting that firms that adopt a balanced approach along these dimensions can achieve greater effectiveness. These novel insights offer important implications for marketers designing influencer marketing campaigns. [ABSTRACT FROM AUTHOR]

Understanding and effectively responding to employee psychological contract (PC) breach is a critical task for human resource (HR) managers. Drawing on social information processing theory and the deontic theory of justice and using two separate studies, Study 1 (an experiment) and Study 2 (a two-wave field study), the study proposes and tests a conceptualization that helps to explicate the implications of PC breach from the perspective of the third-party employee. Specifically, supporting our hypotheses, we found that when a third-party observer perceives a coworker's PC breach perpetrated by their common focal supervisor that this negatively influences the third-party's perceptions of the supervisor's interactional justice (i.e., both interpersonal and informational) and that such a relationship is moderated by the extent of the third-party's guanxi with the supervisor. Moreover, our findings further reveal that when a third-party observer with high guanxi with the supervisor also has a high power distance orientation (PDO), that the negative effects associated with the perceived coworker PC breach will be weakened. The study not only responds to scholars' calls but it improves understanding of how the relational context may distort third-party perceptions of social treatment and justice-related behavior. Implications to theory, practice, and future research are discussed. [ABSTRACT FROM AUTHOR]

Integrating conservation of resource (COR) theory and the theory of relational organizing, we conceptualize expatriate–host country national (HCN) knowledge transfer as resource gains between the sender and receiver. Based on a sample of 107 expatriate–HCN dyads, we found that when the knowledge receiver, be it an expatriate or HCN, is high on cultural intelligence (CQ), the sender will be more likely to perceive higher levels of trust in the receiver and shared vision with the receiver. These cognitive responses to the receiver's CQ are instrumental in facilitating the receiver's knowledge acquisition. We also identified the sender's perceptions of the collaborative‐based HR configuration as a contextual condition that strengthens the relationship between the knowledge receiver's CQ and the sender's perceived trust in the receiver and shared vision with the receiver. [ABSTRACT FROM AUTHOR]

The number of teaching assistants (TAs) working in mainstream schools has soared in recent years as students with special educational needs (SEN) are integrated into regular classrooms. However, research on TAs is rare. This study investigated whether and how work engagement mediates the relationship between self-efficacy and job satisfaction among 292 Chinese TAs working in Hong Kong mainstream schools. Survey data were analyzed using partial least squares structural equation modeling (PLS-SEM). Supported by the social cognitive theory of self-efficacy and self-determination theory of work engagement, our results showed that TAs’ self-efficacy is positively related to their job satisfaction through the mediation of work engagement. Implications for an appropriate focus on enhancing TAs’ self-efficacy through classroom experiences and training courses are discussed.

Cancer is one of the most striking diseases that has a potential impact on human health with high mortality rate. During the last century many anticancer agents have emerged but unfortunately, these agents could not provide effective solutions for cancer treatment due to side effects and resistance. All over the world, asking for new anticancer agents is still a major goal for medicinal chemists. Pyrrole and pyrrolo[2,3-d]pyrimidine scaffolds are very interesting bioactive core exhibiting several biological activities as anticancer, anti-inflammatory, antimicrobial activities. Herein, we highlighted on the anticancer activity of the pyrrole and pyrrolo[2,3-d]pyrimidine derivatives which are reported to possess anticancer activity and many of them are in market or still in clinical trials. This work deals with design and synthesis of new pyrrole and pyrrolopyrimidine derivatives. The new compounds were screened for their cytotoxic activity against HepG2 and MCF7in vitro. The most active compounds were evaluated for their VEGFR-2 inhibition in vitro