Incomplete contracts and inadequate enforcement of labor rights, together with the asymmetry power between a worker her employer, create an environment where employer can forcibly extract additional services (e.g. unpaid overtime or sexual favors) from beyond mutually agreed terms exchange. We show that coercive impositions co-exist voluntary transactions in labour market, positive incidence co...

AIM To evaluate self-assessed level of clinical skills of graduating medical students at Zagreb University School of Medicine and compare them with clinical skill levels expected by their teachers and those defined by a criterion standard. METHOD The study included all medical students (n=252) graduating from the Zagreb University School of Medicine in the 2004-2005 academic year and faculty ...

Intracellular concentrations of cyclic AMP increase when cells are deprived of serum. Studies with the mouse fibroblast line 3T3, an SV40-transformed subline of 3T3, and six different revertant lines derived from this clone show that a marked increase in cyclic AMP occurs only when the serum concentration is reduced below the minimum necessary for growth of a given line. Conversely, density-dep...

Females often prefer to mate with males with certain traits. Preferred males might cooperate with females to reduce the direct costs of reproduction. However, unpreferred males use alternative tactics that attempt to alter female choice in their favour, such as coercion. When this occurs, females have to choose whether to pay the costs of coercion and mate with preferred males or avoid the cost...