Sent from My iPhone: The Medium and Message as Cues of Sender Professionalism in Mobile Telephony

The growing ubiquity of mobile telephony able to send e-mail raises new questions, and renews old issues, about the effect of the medium on a message. This article reports experimental results testing effects of user- and medium-generated cues on perceptions of message senders. Grounded in warranting theory, we assess the interaction of low- and high-warrant cues on perceptions of the sender's professionalism, hypothesizing senders of grammatically accurate messages are perceived as more credible. However, we also hypothesize an interaction between grammatical accuracy and the system-generated high-warrant cues from the mobile device used to send the message. Responses from 111 students assessing the credibility of an e-mail sender indicate that, although a message's user-generated content (grammatically accurate vs. erred) influences receiver's perceptions, negative attributions are attenuated by cues reflecting the transmission medium (i.e., a message's mobile signature block). Findings offer theoretical implications for warranting theory. Additionally, results suggest practitioners need to craft a message and indicate the transmission medium strategically to mitigate any impacts on attributions of professionalism to message receivers.     

The stepping stones of learning and evaluation

Based on the teachers’ lectures and evaluations we elaborate on a model of the aspects of learning. Inside the framework of this model three ways for solving a given problem relating to the previous teaching are presented.

We describe and analyse a method which is useful in selecting an evaluation task adapted to intended objectives, helps in the interpretation of the students’ performances and acts as a guide to the possible inferences about what the students acquire.     

Currents and sub-currents in innovation flows: Explaining innovativeness using new-product announcements

The creation of new knowledge is a haphazard process: not every sector in an economy is equally involved. The effect of industry structure on innovativeness has been a focus of attention for a long time by both academics and policymakers. In a much quoted article, using unique data - new-product announcements - Acs and Audretsch [Acs, Z.J., Audretsch, D.B., 1988. Innovation in large and small firms: an empirical analysis. American Economic Review 78(4), 678-690] identified several characteristics of industry structure and their effects on innovativeness. By analyzing a new and more consciously compiled database, we re-examine their original claims. Our results largely support their findings: industry concentration and degree of unionization for instance hamper innovation; skilled labor promotes it. Our findings diverge in one significant respect from theirs: we suggest that the large firms do not contribute more to an industry’s innovativeness than small firms. At the industry level, we find strong support for the Schumpeter Mark I perspective of creative destruction by small firms rather than creative accumulation by large firms. In addition, we show that less dedicated innovators prove more susceptible to firm-external industry factors than more committed innovators. An unfavorable competitive environment decreases the likelihood that less successful innovators will announce new products.     

Predicting a Threshold of Perceived Facebook Post Success via Likes and Reactions: A Test of Explanatory Mechanisms

Individuals frequently engage in self-presentation via social media and can subsequently receive various simple communicative cues (paralinguistic digital affordances; PDAs) from which they may determine the success of their self-presentation, including Likes and Upvotes. Previous research has found these communicatively abstract one-click cues are interpreted idiosyncratically when received, but the quantity received matters to users in determining whether a post is “successful.” The present work probes explanatory mechanisms behind the use of PDA responses as a metric of self-presentational success, deriving hypotheses from social comparison theory, social penetration theory, and expectancy violations theory. Results from a survey (N = 255) reveal that social comparison and communicative reciprocity provide explanatory power regarding the threshold of Likes and Reactions to a Facebook post needed to consider a post successful.