the aim of this study was to determine the interactional effects of various video shows (skilled and self-model) and feedback type on performance and learning of dart throwing skill. 90 volunteers were randomly divided into 6 groups including self-control, experimenter control and yoked feedback that received either skilled model or self-model. three groups who watched the skilled model observe...

The main role and responsibility of second language writing teachers is to help learners to write with minimal errors. To do so, teachers need to provide students with appropriate types of feedback. In this research, the researchers examined the effect of post-text written corrective feedback on written grammatical accuracy of Iranian intermediate EFL learners. In the first phase, Nelson Profic...

The evolution of altruism often requires genetic similarity among interactors. For structured populations in which a social trait affects all group members, this entails positive assortment, meaning that cooperators and noncooperators tend to be segregated into different groups. Several authors have claimed that mechanisms other than common descent can produce positive assortment, but this clai...

Abstract Today, debt stabilization in an uncertain environment is an important issue. In particular, the question how fiscal and monetary authorities should deal with this uncertainty is of much importance. Especially for some developing countries such as Iran, in which on average 60 percent of government revenues comes from oil, and consequently uncertainty about oil prices has a large effec...

In this paper we address the formation control problem of generating a formation for a group of nonholonomic mobile agents. The formation control scheme which is proposed in this paper is based on a fusion of leader-follower and the virtual referenced approaches. This scheme gives a formation error representation that is independent of the number of agents in the formation and the resulting con...

In this paper, we study a multiple access channel with feedback, where the forward and feedback channels share the same link in time-duplex manner, and the transmitters do not have a cooperative link (hidden node topology). Thus, in addition to the transmitters, the receiver is also allowed to transmit (with a maximum average power Pf in Gaussian case). The objective is to minimize the fraction...

In this contribution we present a novel psychological intervention that maps human computer activity to a group feedback device on the basis of a combination of various types of unobtrusive, low-level sensors. The goal is to enable employees to gain insights into their working habits, to reduce stress levels and increase productivity. The unique approach taken is a social feedback board (fishua...

normative feedback is a kind of feedback which involves information about an individual's performance in comparison with other peers unrealistically (positive or negative). the aim of the present study was to determine the effect of normative feedback on throwing aiming task learning in children aged between 9 and 11 in ahvaz city. for this purpose, 90 right-handed children were selected w...

The present study was conducted to further improve the practice of written corrective feedback by integrating the two known feedback types (i.e. direct corrective feedback and metalinguistic explanation). With this aim, a sample of sixty-nine high-intermediate Iranian EFL learners was assigned into different feedback groups. While the first and second groups received direct and metalinguistic e...