Key pecking by 3 pigeons was maintained by a multiple fixed-ratio 10, fixed-ratio 30, fixed-ratio 90 schedule of food presentation. Components differed with respect to amount of reinforcement, such that the unit price was 10 responses per 1-s access to food. Acute administration of morphine, l-methadone, and cocaine dose-dependently decreased overall response rates in each of the components. Wh...

A multi item inventory model with demand dependent on unit price and leading time with limited storage space and set up cost is considered in this paper. The varying production and leading time crashing costs are considered to be continuous functions of unit price and leading time respectively. The model is solved using Karush Kuhn Tucker conditions approach with optimal order quantity, unit pr...

OBJECTIVE To determine the willingness to pay (WTP) and the benefit-cost of modern contraceptives delivered through the public sector in Nigeria. METHODS Data were collected from 4517 randomly selected households. The WTP for the 6 major contraceptive methods available in the public sector was elicited. Logistic regression was used to determine whether the decision to state a positive WTP amo...

In early 2013 rumors about the Euro-appreciation gained momentum, which may lead to decreases in exports and increases in imports of the member states. Therefore, we investigate the impact of changes in the nominal Euro exchange rate vis-à-vis major currencies on export and import performance of nine different Euro-area-countries. To disentangle the “true” equilibrium elasticities SURE system e...

We introduce and study a non-equilibrium continuous-time dynamical model of the price of a single asset traded by a population of heterogeneous interacting agents in the presence of uncertainty and regulatory constraints. The model takes into account (i) the price formation delay between decision and investment by the second-order nature of the dynamical equations, (ii) the linear and nonlinear...

We study the economic importance of accounting information as defined by the value that sophisticated investors can extract from financial statements when maximizing their expected utility from holding a portfolio of U.S. equities. Our approach applies the elegant parametric portfolio policy (PPP) method of Brandt, Santa-Clara and Valkanov (2009) that models portfolio weights as a linear functi...

We study the ex-ante efficiency of mark-to-market accounting (MTM) in a loan market by taking into account its real effects on banks’ origination and retention decisions. Despite its benefit of improved valuation accuracy, MTM could reduce the overall efficiency of the economy. The efficiency loss results from the central idea of the paper: the attempt to exploit the information in market price...

Firms sometimes write price lists or catalogs for their exports, so they set prices for a period of time and do not adjust prices during that interval in response to changes in their environment. The firm sets the price either in its own currency or the importer’s currency. This paper draws a simple link between the choice of currency and the pricing decision of a firm that changes prices in re...

Traditionally, policymakers and financial markets have regarded the “core” consumer price index (CPI) as a key inflation indicator. The core CPI, a special index published by the Bureau of Labor Statistics (BLS), excludes the volatile prices of food and energy. In excluding these components, BLS recognizes that prices that swing dramatically in response to unusual shifts in weather and other un...