1,761 research outputs found
Gender Differences in Risk Aversion and Ambiguity
This paper demonstrates gender differences in risk aversion and ambiguity aversion. It also contributes to a growing literature relating economic preference parameters to psychological measures by asking whether variations in preference parameters among persons, and in particular across genders, can be accounted for by differences in personality traits and traits of cognition. Women are more risk averse than men. Over an initial range, women require no further compensation for the introduction of ambiguity but men do. At greater levels of ambiguity, women have the same marginal distaste for increased ambiguity as men. Psychological variables account for some of the interpersonal variation in risk aversion. They explain none of the differences in ambiguity.
The Economics and Psychology of Personality Traits
This paper explores the interface between personality psychology andeconomics. We examine the predictive power of personality and the stability ofpersonality traits over the life cycle. We develop simple analytical frameworksfor interpreting the evidence in personality psychology and suggest promisingavenues for future research.education, training and the labour market;
The Economics and Psychology of Personality Traits
This paper explores the interface between personality psychology and economics. We examine the predictive power of personality and the stability of personality traits over the life cycle. We develop simple analytical frameworks for interpreting the evidence in personality psychology and suggest promising avenues for future research.lifecycle effects, personality traits
The Economics and Psychology of Personality Traits
This paper explores the interface between personality psychology and economics. We examine the predictive power of personality and the stability of personality traits over the life cycle. We develop simple analytical frameworks for interpreting the evidence in personality psychology and suggest promising avenues for future research.personality traits, lifecycle effects, psychology, economics
On the origin of the difference between the runaway velocities of the OB-supergiant X-ray Binaries and the Be/X-ray Binaries
The recent finding by Chevalier & Ilovaisky (1998) that OB-supergiant X-ray
binaries have relatively large runaway velocities whereas Be/X-ray binaries
have low runaway velocities, provides confirmation of the current models for
the formation of these two types of systems. These predict a difference in
runaway velocity of an order of magnitude. This difference basically results
from the variation of the fractional helium core mass as a function of stellar
mass, in combination with the conservation of orbital angular momentum during
the mass transfer phase that preceded the formation of the compact object in
the system. This combination results into: (i) Systematically narrower
pre-supernova orbits in the OB-supergiant systems than in the Be-systems, and
(ii) A larger fractional amount of mass ejected in the supernovae in high-mass
systems relative to systems of lower mass. Regardless of possible kick
velocities imparted to neutron stars at birth, this combination leads to a
considerable difference in average runaway velocity between these two groups.
The observed low runaway velocities of the Be/X-ray binaries confirm that in
most cases not more than 1 to 2Msun was ejected in the supernovae that produced
their neutron stars. This, in combination with the --on average-- large orbital
eccentricities of these systems, indicates that their neutron stars must have
received a velocity kick in the range 60 - 250 km/s at birth.Comment: reduced abstract, 13 pages, accepted by A&
- …