Which pathway to good ideas? An attention‐based view of innovation in social networks

Research Summary: This study introduces the notion of attention allocation in networks to argue that individuals with different types of network structure produce good ideas via different pathways. Using survey data on communication networks at a software company, we find that people with highly constrained networks generate good ideas by following a logic of interrogation, by which they focus their attention on information from a particular contact. Conversely, individuals with less constrained networks produce good ideas by following a logic of recombination, whereby they divide their attention to information coming from across multiple contacts. The results show that in highly constrained networks, interrogation is a more reliable pathway to good ideas than recombination. We discuss the implications of these findings for behavioral strategy, social networks, and innovation. Managerial Summary: People can develop good ideas when they recombine diverse information inputs shared by non‐redundant communication partners that span multiple local clusters. But, in an organization, most individuals are embedded in constrained networks of people who know each other and thus typically receive redundant information from work colleagues. This study suggests that they can innovate via a different pathway: through interrogation. We find that people who focus their attention on information coming from a particular person succeed at generating good ideas because they deeply interrogate local knowledge and develop domain‐specific insights.     

CEO inside debt and convertible bonds

The question whether convertible bonds are issued to combat the risk‐shifting problem is a subject of debate in the literature, primarily because of the unavailability of clear measures regarding managerial risk‐shifting incentives. Taking advantage of recently developed inside debt‐holding measures for CEOs, we find strong evidence in support of the risk‐shifting hypothesis. When a CEO holds a large amount of inside debt, three distinct patterns emerge: (i) the firm exhibits a lower ratio of outstanding convertibles to total debt; (ii) the firm is less likely to issue convertibles than straight debt; and (iii) the firm devises contract terms to decrease the chance of conversion when it issues convertibles.     

Interaction effects of formal and social controls on business-to-business performance

Marketing and Strategy studies have treated relational governance as a critical factor of business-to-business (B2B) performance. Extant studies offer contrasting views on whether formal or social control is a better control mechanism, with little known about their interaction effect. In this study, the authors aim to investigate the interaction effect of these two control mechanisms by dividing a B2B contract (formal control) into two provisions (transactional and relational) and to examine the specific interaction effect of social control on each provision. The authors also seek to investigate the moderating effects of environmental dynamism, prior ties, and buyer lock-in. The measure of B2B performance reflects relational quality and financial outcome. The results show significantly different interactions between each provision of the contract and social control depending on the level of environmental dynamism and buyer lock-in, and suggest that the environmental condition of the transactions is reflective of managers' optimal control mechanisms.     

Financial Factors in the Business Cycle of a Small Open Economy: The Case of Korea

Financial factors influencing the business cycle have received considerable attention in recent years in the aftermath of the global financial crisis in 2008. This paper examines the role of financial factors in the business cycle by considering Korea, a small open economy, that experienced a severe financial crisis in 1997 as well as the recent global financial crisis. We estimate small open economy Bayesian DSGE (dynamic stochastic general equilibrium) models with financial factors and analyze the role of these financial factors in the business cycle in the context of Korea. The results indicate that the model based on an endogenous financial accelerator and a modified monetary policy rule provides a better explanation to the data than that without the financial factors and justify the recent attention to financial factors influencing the business cycle.     

How does the call market method affect price efficiency? Evidence from the Singapore Stock Market

On August 21, 2000, the Singapore Exchange (SGX) adopted the call market method to open and close the market while the remainder of the day’s trading continued to rely on the continuous auction method. The call method significantly improved the price discovery process and market quality. A positive spillover effect is observed from the opening and closing calls. Day-end price manipulation also declined after the introduction of the call market method. However, the beneficial impact from the call market method is asymmetric, benefiting liquid stocks more than illiquid stocks.     

Targeting Rules for an Open Economy

This study extends the formal analysis of inflation targeting monetary policy using the standard New Keynesian framework to a small open economy by adding inflation and output persistence as well as a direct exchange rate channel to domestic inflation. We find that output variability is lower under CPI inflation targeting than under domestic inflation targeting. However, CPI inflation results in higher variability of the real exchange rate than domestic inflation targeting. Output and the nominal interest rate are less volatile under flexible inflation targeting than under almost-strict inflation targeting. We also find that almost-strict domestic inflation targeting cannot completely insulate domestic inflation from foreign shocks due to a direct exchange rate channel. The model is calibrated to Canadian data.     

Fixed-to-mobile call substitution and telephony market definition in Korea

An appropriate market definition is critical in most antitrust cases. In practice, antitrust authorities define economic markets in a deterministic manner with little concern about the risk involved in defining markets incorrectly. In contrast, this article proposes a probabilistic market definition method by which antitrust authorities can establish a statistical confidence level for their intended market-definition judgments. As an application, we examine the likelihood that the fixed-line and mobile telephony services in Korea can compete in the same economic market. Combining critical loss analysis with a hierarchical Bayes model for stated preference data, we find some evidence for the separation of the fixed-line and mobile telephony markets in present-day Korea. After discussing certain possible regulation biases for market definition, we predict that the two markets will converge in the near future as the mobile price premium continues to decrease.     

Does Reputation Contribute to Reducing Organizational Errors? A Learning Approach

In this study I examine the effect of a firm's reputation for product quality on its effort in learning to reduce its product defect rate. Theoretical ideas on the motivation of learning associated with social aspiration levels and the self-serving bias combined with social categorization suggest that poor quality reputation firms are more likely than their counterparts with a good reputation to attend to potential product defects and consequently reduce their defect rate. However, a stream of research on the motivation of learning stemming from historical aspiration levels and slack search leads to a different argument: a reputation for good quality is more likely to provide firms with a motivation to avoid product defects. I build upon these two competing arguments and hypothesize that stronger motives for learning exist in situations where firms have either a weak or strong reputation for product quality. My study of product recalls in the US automotive industry highlights an inverted U-shaped relationship, indicating the liability of an intermediate reputation in reducing product defects.     

Asymmetric Effects of Money on Inflation: Evidence from Korean Data

New Keynesian macroeconomic models predict that monetary shocks have asymmetric effects on inflation, i.e., inflation responds more to positive monetary shocks than to negative shocks (Asymmetry Hypothesis A), and that the asymmetry is positively associated with movements in average inflation (Asymmetry Hypothesis B). Korean data are shown to provide little support for Asymmetry Hypothesis A and strong support for Asymmetry Hypothesis B. [O53, E12]