Harvest, After 50 Years of Sowing

Reflections on Human Action after 50 Years

The core of Ludwig von Mises’ thought is the theory of human action, or praxeology, the general science he seeks to articulate. Within this general science is included—embedded in it—catallactics, or the science of exchange (Mises [1949] 1996: 1–3; hereafter M). Consequently, to Mises everything we seek to study in economics stems ultimately from individual choice, the key to which is subjectiv...

Cognitive Dissonance Theory After 50 Years of Development

Research and theoretical developments on the theory of cognitive dissonance are reviewed. After considering the self-consistency, self-affirmation, and aversive consequences revisions, the authors review research that has challenged each of the revisions and that supports the original version of the theory. Then, the authors review the action-based model of dissonance, which accepts the origina...

[Eyelid alterations after the age of 50 years].

PURPOSE To quantify the palpebral alterations occurring in subjects after the age of 50 years. METHODS An observational study was done with 325 subjects older than 50 years. The data comprised measurements of intercantal distance, palpebral fissure length and height, external and internal eyelid angles, margin reflex distance (MRD) and total palpebral fissure area. Digital images were obtaine...

50 years of Sterillium®

The insulin immunoassay after 50 years: a reassessment.

In 1960 Berson and Yalow published a method for the radioimmunoassay (RIA) of plasma insulin based on the concept that the extent to which unlabeled insulin displaces labeled insulin from anti-insulin antibody is proportional to the concentration of unlabeled insulin. The RIA for insulin has greatly increased knowledge of the physiology of glucose homeostasis and of the diverse causes of diabet...