Behavioral Reactions (behavioral + reaction)

Distribution by Scientific Domains


Selected Abstracts


THE SHORT-TERM BEHAVIORAL REACTIONS OF BOTTLENOSE DOLPHINS TO INTERACTIONS WITH BOATS IN DOUBTFUL SOUND, NEW ZEALAND

MARINE MAMMAL SCIENCE, Issue 4 2006
David Lusseau
Abstract Doubtful Sound is home to one of the southernmost resident populations of bottlenose dolphins (Tursiops sp.). This population regularly interacts with scenic cruises. During these interactions, dolphins tend to horizontally and vertically avoid vessels, especially when the behavior of these vessels is intrusive. This study aimed at understanding the behavioral reactions of individuals to these interactions that lead to the disruption of the school's behavioral state. Observing the behavioral events performed by individuals during an interaction can help define the short-term reactions elicited by the boat presence. I recorded the behavioral events performed by all individuals of focal schools. The frequency of occurrence of all events was compared depending on the presence of vessels, their behavior, and the behavioral state of the focal school. Dolphins tended to perform more side flops while interacting with powerboats, a behavior which may be used as a non-vocal communication tool. Moreover, the movement of dolphins became more erratic during interactions with all types of vessels. These effects increased when the boats were more intrusive while interacting. This study shows that the impact of interaction with boats can be minimized if the vessels respect the guidelines in place. [source]


Behavioral Syndromes in Stable Social Groups: An Artifact of External Constraints?

ETHOLOGY, Issue 12 2008
Ximena J. Nelson
Individuals of many species differ consistently in their behavioral reactions toward different stimuli, such as predators, rivals, and potential mates. These typical reactions, described as ,behavioral syndromes' or ,personalities,' appear to be heritable and therefore subject to selection. We studied behavioral syndromes in 36 male fowl living in 12 social groups and found that individuals behaved consistently over time. Furthermore, responses to different contexts (anti-predator, foraging, and territorial) were inter-correlated, suggesting that males exhibited comparable behavioral traits in these functionally distinct situations. We subsequently isolated the same roosters and conducted tests in a ,virtual environment,' using high-resolution digital video sequences to simulate the anti-predator, foraging, and territorial contexts that they had experienced outdoors. Under these controlled conditions, repeatability persisted but individual responses to the three classes of stimuli failed to predict one another. These were instead context-specific. In particular, production of each type of vocal signal was independent, implying that calls in the repertoire are controlled by distinct mechanisms. Our results show that extrinsic factors, such as social position, can be responsible for the appearance of traits that could readily be mistaken for the product of endogenous characters. [source]


Employee affective and behavioral reactions to the spatial density of physical work environments

HUMAN RESOURCE MANAGEMENT, Issue 1 2005
Douglas R. May
This field study of a medical clinic found that employees in spatially dense work areas (i.e., those with little space available per person) experienced higher levels of perceived crowding, transfer intentions, and tardiness, as well as lower work area satisfaction, than employees in low-density areas. Crowding perceptions explained the relations between spatial density and the measures of work area satisfaction and tardiness. Finally, when employees had high workloads and their jobs required physical movement, spatial density had weaker relations to crowding perceptions and area satisfaction than in other conditions. Implications of these findings for human resource practitioners are discussed. © 2005 Wiley Periodicals, Inc. [source]


THE SHORT-TERM BEHAVIORAL REACTIONS OF BOTTLENOSE DOLPHINS TO INTERACTIONS WITH BOATS IN DOUBTFUL SOUND, NEW ZEALAND

MARINE MAMMAL SCIENCE, Issue 4 2006
David Lusseau
Abstract Doubtful Sound is home to one of the southernmost resident populations of bottlenose dolphins (Tursiops sp.). This population regularly interacts with scenic cruises. During these interactions, dolphins tend to horizontally and vertically avoid vessels, especially when the behavior of these vessels is intrusive. This study aimed at understanding the behavioral reactions of individuals to these interactions that lead to the disruption of the school's behavioral state. Observing the behavioral events performed by individuals during an interaction can help define the short-term reactions elicited by the boat presence. I recorded the behavioral events performed by all individuals of focal schools. The frequency of occurrence of all events was compared depending on the presence of vessels, their behavior, and the behavioral state of the focal school. Dolphins tended to perform more side flops while interacting with powerboats, a behavior which may be used as a non-vocal communication tool. Moreover, the movement of dolphins became more erratic during interactions with all types of vessels. These effects increased when the boats were more intrusive while interacting. This study shows that the impact of interaction with boats can be minimized if the vessels respect the guidelines in place. [source]


Experiences with Weight Change in African-American Breast Cancer Survivors

THE BREAST JOURNAL, Issue 2 2008
Chanita Hughes Halbert PhD
Abstract:, Although weight gain is a common side effect of breast cancer treatment, limited empirical data are available on how African-American breast cancer survivors react to changes in their weight following diagnosis and treatment. The purpose of this study was to explore psychological and behavioral reactions to weight change in African-American breast cancer survivors. We conducted a qualitative study to explore reactions to weight change following diagnosis and treatment in 34 African-American breast cancer survivors. Forty-seven percent of women reported gaining weight, 32% reported weight loss, and 21% reported no changes in their weight. Regardless of whether women gained or lost weight, these changes were viewed as stressors that caused psychological distress and health concerns. However, some women had positive reactions to weight loss, especially if they had been heavy prior to diagnosis. Women exercised and changed their dietary behaviors following treatment. Despite this, women reported being frustrated with not being able to control changes in their weight. These results suggest that changes in weight may be a critical component of breast cancer survivorship in African-American women. It may be important to provide African-American breast cancer survivors with information about the causes and implications of weight change and strategies for weight control after treatment as part of their follow-up care. [source]


Moonlighting: public service and private practice

THE RAND JOURNAL OF ECONOMICS, Issue 4 2007
Gary Biglaiser
We study job incentives in moonlighting, when public-service physicians may refer patients to their private practices. Some doctors in the public system are dedicated, and behave sincerely, but others,the moonlighters,are utility maximizers. Allowing moonlighting always enhances aggregate consumer welfare, but equilibrium public-care quality may increase or decrease; if quality increases, moonlighting improves each consumer's expected utility. Unregulated moonlighting may reduce consumer welfare as a result of adverse behavioral reactions, such as moonlighters shirking more and dedicated doctors abandoning their sincere behavior. Price regulation in the private market limits such adverse behaviors in the public system and improves consumer welfare. [source]


The Effect of Upward Feedback on Managerial Behavior

APPLIED PSYCHOLOGY, Issue 1 2004
Peter A. Heslin
Un feed-back de gratification a été donné par des subordonnés aux managers australiens d'une firme internationale de prestation de services. Dans cette recherche quasi-expérimentale, la perfomance au travail de ces managers, a pu être observée six mois plus tard par les subordonnés comme s'étant accrue par rapport à la performance initiale et à ceux obtenus par un groupe de comparaison. L'efficacité personnelle modère la portée de ces résultats suggérant qu'elle joue un rôle clé en déterminant des réactions comportementales au feed-back de gratification. L'orientation vers un but d'apprentissage fut corrélée de manière significative à leur performance subséquente. Upward feedback from subordinates was provided to Australian managers in an international professional services firm. The job performance of the managers in this quasi-experimental study was observed by subordinates to be significantly higher six months later, compared to both initial performance and subordinate ratings of a comparison group. Self-efficacy moderated this finding, suggesting that it plays a key role in determining behavioral reactions to upward feedback. The managers' learning goal orientation correlated significantly with their subsequent performance. [source]