Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Competitive Behavior”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 253 records · Page 14Linked to original sources
PubMed2001

Egalitarianism in female African lions.

Because most cooperative societies are despotic, it has been difficult to test models of egalitarianism. Female African lions demonstrate a unique form of plural breeding in which companions consistently produce similar numbers of surviving offspring. Consistent with theoretical predictions from models of reproductive skew, female lions are unable to control each other's reproduction because of high costs of fighting and low access to each other's newborn cubs. A female also lacks incentives to reduce her companions' reproduction, because her own survival and reproduction depend on group territoriality and synchronous breeding. Consequently, female relationships are highly symmetrical, and female lions are "free agents" who only contribute to communal care when they have cubs of their own.

Animals↗
PubMed1978

Cognitive aspects of performance.

The study of cognitive structures and processes in the control of skilled performance is considered and reviewed with special reference to a proposed hierarchical system incorporating levels of motor integration. Cognitive styles and dispositions of general behaviour are suggested as factors which may determine performance levels. The relative importance of these personal factors and stronger personality traits in accounting for variance in performance is considered in the light of a critique of the current interactional controversy.

Anxiety↗
PubMed1994

A test of the COPE model on motor performance and affect.

The effect of a model called COPE which suggests the use of cognitive-behavioral strategies in response to acute stress in sport was tested. Both rotary pursuit performance and changes in affect were similar for 33 subjects in groups who used the COPE model or used only a segment (one strategy) of the model. Both experimental groups performed better and experienced less negative affect after treatment than the control group.

Adaptation, Psychological↗
PubMed2004

Food, health and psychology: competing recipes for research and understanding.

Mainstream and post-postivist approaches to psychological research are compared with regard to healthy eating and eating disorders. The tendency of the mainstream operationally to define key concepts is contrasted with the post-positive preference for conceptual analysis and an example of this is considered in relation to theory of planned behaviour research. The reason why the search for a causal mechanism for major eating disorders such as anorexia nervosa has proved unfruitful becomes transparent once the phenomena are construed as action, as opposed to behaviour. Some of the methodological problems and issues arising within the post-positivist approaches are discussed using illustrative examples of autoethnographic research into eating episodes.

Behavioral Medicine↗
PubMed1998

The use of an enhanced simplified habit-reversal procedure to reduce disruptive outbursts during athletic performance.

An enhanced simplified habit-reversal procedure was used with a 14-year old boy who presented with a long history of disruptive, angry outbursts during tennis matches. Initial treatment involved simplified habit-reversal procedures delivered in a multiple baseline design across settings. Modest results led to additional supporting contingencies, including response costs. Results showed elimination of disruptive outbursts during both nontournament and tournament matches and highlight the importance of adding additional supporting contingencies to simplified habit reversal for some self-control problems.

Acting Out↗
PubMed1992

Choice with delayed and probabilistic reinforcers: effects of variability, time between trials, and conditioned reinforcers.

In a discrete-trials procedure with pigeons, a response on a green key led to a 4-s delay (during which green houselights were lit) and then a reinforcer might or might not be delivered. A response on a red key led to a delay of adjustable duration (during which red houselights were lit) and then a certain reinforcer. The delay was adjusted so as to estimate an indifference point--a duration for which the two alternatives were equally preferred. Once the green key was chosen, a subject had to continue to respond on the green key until a reinforcer was delivered. Each response on the green key, plus the 4-s delay that followed every response, was called one "link" of the green-key schedule. Subjects showed much greater preference for the green key when the number of links before reinforcement was variable (averaging four) than when it was fixed (always exactly four). These findings are consistent with the view that probabilistic reinforcers are analogous to reinforcers delivered after variable delays. When successive links were separated by 4-s or 8-s "interlink intervals" with white houselights, preference for the probabilistic alternative decreased somewhat for 2 subjects but was unaffected for the other 2 subjects. When the interlink intervals had the same green houselights that were present during the 4-s delays, preference for the green key decreased substantially for all subjects. These results provided mixed support for the view that preference for a probabilistic reinforcer is inversely related to the duration of conditioned reinforcers that precede the delivery of food.

Animals↗
PubMed2000

Attachment, adolescent competencies, and substance use: developmental considerations in the study of risk behaviors.

Social-control-based deviance theories highlight parental bonding as a protective factor for problem behaviors in that bonds are viewed as reflecting the adolescent's adoption of conventional societal attitudes and values. Developmental theory and research suggest an alternative conceptualization of the linkages between family bonding and adolescent risk behaviors. This conceptualization requires concurrent examination of a range of adolescent competencies as well as consideration of parent and peer contexts. Support is found for several hypotheses derived from a developmental approach proposing: (a) positive associations between adolescent-parent attachment and adolescent competencies--autonomy, peer relationship competency, and coping; (b) coherence in the pattern of negative associations between attachment/competencies and substance use problems; and (c) a disjunctive pattern of associations with substance use reflected by positive associations with peer competencies but not with parental attachment.

Adaptation, Psychological↗
PubMed1987

Physicians and their hospitals: a marketing partnership.

As hospitals accelerate their marketing campaigns in efforts to compete for patients, physicians should recognize the opportunities presented by this trend. This article indicates how a physician may develop his or her own marketing strategy and contends that a hospital/physician marketing partnership can benefit both hospital and physician.

Competitive Behavior↗
PubMed1999

[Agonistic behavior: model, experiment, perspectives].

Repeated experiences of social victories or defeats in daily agonistic confrontations led to different changes of the brain neurotransmitter activities in male mice with alternative types of social behaviour. Total activation of the brain dopamine metabolism was found in winners. Chronic defeats were accompanied by specific changes in serotonin and noradrenaline metabolism in limbic areas of the brain. Between losers and winners, significant differences were found in emotionality, exploratory activity, locomotion, level of anxiety, communicative behaviour, and alcohol consumption, as well as in immune responses and susceptibility to transplanted Krebs-2 tumour growth, gonadal function, and gastric mucosa damage. A sensory contact technique is proposed for studying the neurophysiological consequences of social conflicts.

Aggression↗
PubMed2005

Strategic intensity: a conversation with world chess champion Garry Kasparov.

It's hard to find a better exemplar for competition than chess. The image of two brilliant minds locked in a battle of skill and will-in which chance plays little or no apparent role-is compelling. Even people who have scant knowledge of the game instinctively recognize that chess is unusual in terms of its intellectual complexity and the strategic demands it places on players. Can strategists learn anything from chess players about what it takes to win? To find out, H BR senior editor Diane L. Coutu talked with Garry Kasparov, the world's number one player since 1984. Kasparov believes that success in both chess and business is very much a question of psychological advantage; the complexity of the game demands that players rely heavily on their instincts and on gamesmanship. In this wide-ranging interview, Kasparov explores the power of chess as a model for business competition; the balance that chess players strike between intuition and analysis; the significance of his loss to IBM's chess-playing computer, Deep Blue; and how his legendary rivalry with Anatoly Karpov, Kasparov's predecessor as World Chess Champion, affected his own success. Kasparov also shares his solution to what he calls the champion's dilemma, a question for all world masters, whether they are in business, sports, or chess: Where does a virtuoso go after he has accomplished everything he's ever wanted to, even beyond his wildest imagination? If you are lucky, says Kasparov, your enemies will push you to be passionate about staying at the top.

Commerce↗
PubMed1990

Effects of intra-amygdaloid TRH injections on motor activity and dominant-submissive behavior in rats competing for water.

The effect of thyrotropin releasing hormone (TRH) microinjections into the central amygdala (10 g in 0.5 1 into each side) on locomotor activity water intake and dominance behavior in a water competition test was investigated in male Wistar rats. TRH increased the general motility without altering the number of rearings. Intra-amygdaloid TRH injection to submissive rats resulted in a loss of subordinate position in these animals in the water competition test. A tendency to decrease dominance followed the injection of the peptide to the dominant animals. The effect of TRH in the dominance test does not appear to involve influence on the thirst drive as microinjection of the peptide did not change significantly the water consumption in thirsty rats.

Amygdala↗
PubMed1991

Tonic immobility and factors influencing its duration in rats.

The author developed a method for inducing tonic immobility (paroxysmal inhibition) in rats and mice. By means of a plexiglass plate and plexiglass box the rat is immobilised, rotated at 180 degrees and subjected to constant pressure corresponding to the weight of the plexiglass plate. This way it is possible to prolong substantially tonic immobility in rats without using foregoing time consuming and interfering, so called sensitizing procedures. The duration of TI can be influenced by pharmacologic and nonpharmacological interventions. A longer duration of TI appeared to be typical for rats tending to react in other situations with anxiety, motor inhibition and submission.

Animals↗