It is well established that Parkinson's disease leads to impaired learning from reward and enhanced learning from punishment. The administration of dopaminergic medications reverses this learning pattern. However, few studies have investigated the neural underpinnings of these cognitive processes. In this study, using fMRI, we tested a group of Parkinson's disease patients on and off dopaminerg...

Most current attempts to explain the evolution—through individual selection—of pro-social behavior (i.e. behavior that favors the group) that allows for cohesive societies among non related individuals, focus on altruistic punishment as its evolutionary driving force. The main theoretical problem facing this line of research is that in the exercise of altruistic punishment the benefits of punis...

OBJECTIVES Corporal punishment is still widely practiced around the globe, despite the large body of child development research that substantiates its short- and long-term consequences. Within this context, this paper examined the relationship between parental use of corporal punishment and youth externalizing behavior with a Chilean sample to add to the growing empirical evidence concerning th...

Public–private collaborations have the potential to effectively respond extreme events. However, traditional public–private that are usually led by governmental actors often encounter significant difficulties in a crisis. Based on case study of collaboration dealing with COVID-19 China, we explore how private actor emerges as leader initiate and manage crisis, stakeholders this work together ha...

Previous research has shown that trial ordering affects cognitive performance, but this has not been tested using category-learning tasks that differentiate learning from reward and punishment. Here, we tested two groups of healthy young adults using a probabilistic category learning task of reward and punishment in which there are two types of trials (reward, punishment) and three possible out...

Punishment can stabilize costly cooperation and ensure the success of a common project that is threatened by free-riders. Punishment mechanisms can be classified into pool punishment, where the punishment act is carried out by a paid third party, (e.g. a police system or a sheriff), and peer punishment, where the punishment act is carried out by peers. Which punishment mechanism is preferred wh...

In this paper, we consider the output regulation problem of a class of linear switched multi-agent systems. The problem can be viewed as a generalization of several control problems of the multi-agent systems. Due to the limited information exchanges of different subsystems, the problem does not permit a centralized approach. By devising a distributed observer, we can solve the problem by both ...

We study the effects of environmental policy commitments in a futuristic world in which solar radiation management (SRM) can be utilized to reduce climate change damages. Carbon and sulfur dioxide emissions (correlated pollutants) can be reduced through tradable permits. We show that if nations simultaneously commit to carbon permit policies, national SRM levels rise with carbon quotas. Alterna...

While peer punishment sometimes motivates increased cooperation, it sometimes reduces cooperation. We use a lab experiment to study why punishment sometimes fails. We begin with a gift exchange game with punishment as it has typically been implemented therein since punishment has often backfired in this game. We modify two features of punishment that could increase its efficacy: punishment’s st...