Two related issues are seldom jointly addressed in the cross market price discovery literature: i) a model that focuses on non-price parameter, ii) testing a non-price parameter model against a price parameter model. We have two objectives in this paper. First, develop a joint trade direction model (JTDM) from the single market model in Madhavan, Richardson and Roomans (1997). Second, estimate ...

BACKGROUND The "Sex-Reassignment Surgery" is a solution that besides behavioral therapy has been suggested to people suffering from gender identity disorders in recent years. In Iran, this trend has become more popular over the past years due to the inclination to reach to the goal rapidly with less effort and also the surgery has attracted many patients with the problem. Religious clerics have...

The g oomy biographies l of m nt e al patients most often represent psychiatric artifacts produced through a "loaded" process of sampling only the bleak events of the patients' lives. If a social identity were constructed for any person based on a biased sample of his life events, he could easily be portrayed as a villain or as a man of character, as a criminal or as a men of low and o der, as ...

Grassroots fundraising leverages favor trading in social networks to support the provision of a public good. We use a laboratory experiment to study the elements and dynamics of this type of institution. Peer-to-peer reciprocity is important, and having the ability to practice targeted reciprocity in our experiment increases contributions to the public good by 14%. Subjects reward group members...

The heterochromatin-like structure formed by the yeast silent information regulator complex (SIR) represses transcription at the silent mating type loci and telomeres. Here, we report that tight protein-DNA complexes induce ectopic recruitment of the SIR complex, promoting gene silencing and changes in subnuclear localization when cis-acting elements are nearby. Importantly, lack of the replica...

Vast supercolonies of interconnected nests formed by unicolonial ant species are the largest cooperative groups of animals known. Research published recently in BMC Evolutionary Biology reveals that a supercolony can be more genetically structured than previously thought, comprising several extended families. Surprisingly, the families coexist peacefully, even though they seem to recognize each...

The purpose was to show that when a favor reduces a person's freedom, it arouses "psychological reactance," a motivational state aimed at restoration of this freedom. Ss, run individually, learned they were to make Ist-imprcssion ratings of another S (confederate) and then were given a soft drink by this S, prior to making the ratings. In a 2 X 2 design, the Ist-imprcssion ratings were given lo...