Comparative Analysis of Thresholds of Non-Revolutionary Institutional Change: China and the United States in the 1980s

Ireland has experienced a series of interlocking banking, fiscal, unemployment, and political crises since 2007. We detail the challenges involved in modeling individual moments of the crisis through the lens of balance sheets and transactions matrices among sectors of the Irish society. We conclude with a series of recommendations for models of small open economies.     

An Educational Production Function for Principles of Economics

An educational production function is developed from the earlier models of Bloom, Hanushek, and Allison. Using two-stage least squares regression, the statistical analysis attempts to sort out the variables which are significant in explaining achievement and attitude in the first course in economics.     

Marketing Hype: A New Perspective for New Product Research and Introduction

Marketing research procedures typically used to support new product development activities often emphasize the collection of data from potential customers, even when the product success depends on the decisions of a number of key stakeholders such as distributors, media, etc. Consequently, most conventional product introduction efforts focus on a target customer segment and ignore the needs of other stakeholders. These narrowly concentrated research efforts can lead to unfounded expectations regarding the product performance. Similarly, the lopsided focus on consumers can lead to reduced marketing effectiveness. Jerry Wind and Vijay Mahajan argue for the recognition of the process of "marketing hype," a set of prelaunch activities leading to the creation of a supportive market environment. This can lead to the creation of broader strategies that focus on the key stakeholders as subjects for new product research, and targets for the introductory marketing programs. This could lead to a richer understanding of the intergroup influences on the adoption of the new product and increase the chances of a successful new product launch.     

Numerical issues in threshold autoregressive modeling of time series

This paper analyses the contribution of various numerical approaches to making the estimation of threshold autoregressive time series more efficient. It relies on the computational advantages of QR factorizations and proposes Givens transformations to update these factors for sequential LS problems. By showing that the residual sum of squares is a continuous rational function over threshold intervals it develops a new fitting method based on rational interpolation and the standard necessary optimality condition. Taking as benchmark a simple grid search, the paper illustrates via Monte Carlo simulations the efficiency gains of the proposed tools.     

Music,music videos,and wear out

Repeated exposure to a music video was found to forestall wear out relative to repetitive exposure to the music only. Susceptibility to wear out in the case of the music video was further reduced by eliminating the closure associated with the story told by the video. The level of positive cognitive responses was posited as a mediator to help explain the observed results. © 1993 John Wiley & Sons, Inc.