Relationship between Anxiety, Self-Confidence, and Evaluation of Coaching Behaviors

Two experiments examined Smoll and Smith\u27s (1989) model of leadership behaviors in sport. The coaching behaviors of a male head coach of a collegiate women\u27s basketball team (n=11 players) were examined. The data supported competitive trait anxiety as an individual-difference variable that mediates athletes\u27 perception and evaluation of coaching behaviors. There also was support for adding athletes\u27 state cognitive anxiety, state self-confidence and perception of the coach\u27s cognitive anxiety to the model as individual-difference variables. Athletes who scored high in trait anxiety (p\u3c.001) and state cognitive anxiety (p\u3c.05) and low in state self-confidence (p\u3c.05), and athletes who perceived the coach as high in state cognitive anxiety (p\u3c.001), evaluated coaching behavior more negatively. Game outcome may influence the effect of self-confidence in mediating athletes\u27 perception and evaluation of coaching behaviors. Additionally, athletes perceived several specific coaching behaviors more negatively than did the coach, and athletes drastically overestimated their coach\u27s self-reported pregame cognitive and somatic anxiety and underestimated his self-confidence. Overall, the results suggest that coaches should be more supportive and less negative with high anxious and low self-confident athletes

Vanishing Acts: Creative Women in Spain and the United States

This exploratory cross-cultural study examines the experiences of women in advertising creative departments in Spain and the United States. The study, an exploration of the creative environment and its impact on female creatives, is framed by Hofstede’s dimensional model of national culture (Hofstede 2001; de Mooij & Hofstede 2010) and signalling theory (Spence 1974). Interviews with 35 top female creatives suggest that the challenges women face are rooted in the ‘fraternity culture’ or ‘territorio de chicos’ of creative departments in both countries. The data further suggest that the gender-bound cultural environment of advertising creative departments may be a global phenomenon, one that may adversely affect the creative process and impact women’s upward mobility

Quantitative Estimates on the Binding Energy for Hydrogen in Non-Relativistic QED. II. The spin case

The hydrogen binding energy in the Pauli-Fierz model with the spin Zeeman term is determined up to the order alpha cube, where alpha denotes the fine-structure constant

Ten Years in Rehabilitation of Spoil: Appearance, Plant Colonists, and the Dominant Herbivore

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Motion of a distinguishable impurity in the Bose gas: Arrested expansion without a lattice and impurity snaking

We consider the real time dynamics of an initially localized distinguishable impurity injected into the ground state of the Lieb-Liniger model. Focusing on the case where integrability is preserved, we numerically compute the time evolution of the impurity density operator in regimes far from analytically tractable limits. We find that the injected impurity undergoes a stuttering motion as it moves and expands. For an initially stationary impurity, the interaction-driven formation of a quasibound state with a hole in the background gas leads to arrested expansion -- a period of quasistationary behavior. When the impurity is injected with a finite center of mass momentum, the impurity moves through the background gas in a snaking manner, arising from a quantum Newton's cradle-like scenario where momentum is exchanged back-and-forth between the impurity and the background gas.Comment: v1: 13 pages, 10 figures; v2: 14 pages, 13 figures and change of titl

A formula for the First Eigenvalue of the Dirac Operator on Compact Spin Symmetric Spaces

Let $G/K$ be a simply connected spin compact inner irreducible symmetric space, endowed with the metric induced by the Killing form of $G$ sign-changed. We give a formula for the square of the first eigenvalue of the Dirac operator in terms of a root system of $G$. As an example of application, we give the list of the first eigenvalues for the spin compact irreducible symmetric spaces endowed with a quaternion-K\"{a}hler structure

Existence and uniqueness for Mean Field Games with state constraints

In this paper, we study deterministic mean field games for agents who operate in a bounded domain. In this case, the existence and uniqueness of Nash equilibria cannot be deduced as for unrestricted state space because, for a large set of initial conditions, the uniqueness of the solution to the associated minimization problem is no longer guaranteed. We attack the problem by interpreting equilibria as measures in a space of arcs. In such a relaxed environment the existence of solutions follows by set-valued fixed point arguments. Then, we give a uniqueness result for such equilibria under a classical monotonicity assumption