An analysis of concept learning: Simple conceptual control and definition-based conceptual control

The Analysis of Verbal Behavior - Concept learning can involve either contingency shaping of stimulus-class discriminations or the application of definitions of the concepts. Experimental behavior...     

Citizens’ Perception of Past Environmental Damage and Liability in Countries with Transition: Evidence from Kemerovo,Russia

This paper analyzes citizens’ perception of past environmental damage and liability through the estimation of willingness to pay for the implementation of decontamination and land rehabilitation of the damaged site. The paper takes the Russian Federation as a case of country in transition and focuses on Kemerovo region as one of the most affected regions in the country. The major analytical tool employed in the study is choice experiment, data for which was collected through a household survey. Primary conclusion of the analysis is that citizens' willingness to financially support the implementation of environmental quality improvement projects is not high though individuals in the studied area express high level of concern over the issue in focus.     

Restricted mean survival time as a summary measure of time‐to‐event outcome

Many clinical research studies evaluate a time‐to‐event outcome, illustrate survival functions, and conventionally report estimated hazard ratios to express the magnitude of the treatment effect when comparing between groups. However, it may not be straightforward to interpret the hazard ratio clinically and statistically when the proportional hazards assumption is invalid. In some recent papers published in clinical journals, the use of restricted mean survival time (RMST) or τ ‐year mean survival time is discussed as one of the alternative summary measures for the time‐to‐event outcome. The RMST is defined as the expected value of time to event limited to a specific time point corresponding to the area under the survival curve up to the specific time point. This article summarizes the necessary information to conduct statistical analysis using the RMST, including the definition and statistical properties of the RMST, adjusted analysis methods, sample size calculation, information fraction for the RMST difference, and clinical and statistical meaning and interpretation. Additionally, we discuss how to set the specific time point to define the RMST from two main points of view. We also provide developed SAS codes to determine the sample size required to detect an expected RMST difference with appropriate power and reconstruct individual survival data to estimate an RMST reference value from a reported survival curve.     

Allocating Costs of Environmental Management among Generations: A Case of Environmental Liabilities in Transition Economies

The objective of this paper is to examine cost allocation in relation to remediating environmental liability issues in Russia, where significant environmental damages, continuing from the Soviet era, present serious impediments to pursuing sustainable development. The research attempts to highlight citizens?? preferences for remediating facilities and sites with environmental liabilities, and elicits preference differences among citizens using choice experiment methods. Intergenerational issues are involved in addressing environmental liabilities in transition economies because the causes and effects are spread among generations. Therefore, evaluating citizens?? preferences provides more policy implications for future remediation initiatives. The econometric analysis reveals that citizens demonstrate positive preferences for reducing pollution of drinking water and soil decontamination. The research also suggests that the households with higher incomes, older household heads (or spouses), and more young children have higher preferences for remediating environmental liabilities in Russia. Estimation of the marginal willingness to pay (MWTP) for age and income segments of the households allows the government to determine a suitable taxation policy. The findings provide new insights on cost allocation in relation to remediating environmental damages in transition economies that have suffered from these serious environmental legacies.     

Truthful Equilibria in Dynamic Bayesian Games

This paper characterizes an equilibrium payoff subset for dynamic Bayesian games as discounting vanishes. Monitoring is imperfect, transitions may depend on actions, types may be correlated, and values may be interdependent. The focus is on equilibria in which players report truthfully. The characterization generalizes that for repeated games, reducing the analysis to static Bayesian games with transfers. With independent private values, the restriction to truthful equilibria is without loss, except for the punishment level: if players withhold their information during punishment‐like phases, a folk theorem obtains.     

Recursive Methods in Discounted Stochastic Games: An Algorithm for δ→ 1 and a Folk Theorem

We present an algorithm to compute the set of perfect public equilibrium payoffs as the discount factor tends to 1 for stochastic games with observable states and public (but not necessarily perfect) monitoring when the limiting set of (long‐run players') equilibrium payoffs is independent of the initial state. This is the case, for instance, if the Markov chain induced by any Markov strategy profile is irreducible. We then provide conditions under which a folk theorem obtains: if in each state the joint distribution over the public signal and next period's state satisfies some rank condition, every feasible payoff vector above the minmax payoff is sustained by a perfect public equilibrium with low discounting.     

A Method of Exploring the Mechanism of Inflationary Expectations Based on Qualitative Survey Data

The objective of this article is to propose a method of exploring the mechanism of expectation formation based on qualitative survey data. The survey data are regarded as a sample from a multinomial distribution whose parameters are time-variant functions of inflation expectations. The parameters are estimated using a Bayesian recursive approach, which is a generalization of the Kalman filtering technique. For illustrative purposes, the method is applied to Japanese data. One notable finding from the empirical analysis is that the expectation formation process of Japanese enterprises has varied greatly over time.     

Effects of Grammar Instruction and Fluency Training on the Learning of the and a by Native Speakers of Japanese

The Analysis of Verbal Behavior - In a computer-assisted sentence completion task, the effects of grammar instruction and fluency training on learning the use of the definite and indefinite...