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PubMed2006

Parental and coach support or pressure on psychosocial outcomes of pediatric athletes in soccer.

OBJECTIVE: The purpose of this article was to examine supportive and/or pressuring influences of parents and coaches on young athletes' maladaptive perfectionist tendencies, relationships to friends, and competency perceptions in soccer. Previous research has revealed that parents and coaches may give rise to both enjoyable and stressful sport experiences for the pediatric athlete and that parents and coaches are thus able to influence whether young people decide to quit sport or continue participating. Less is known about the relation of supportive versus pressuring parental and coach behaviors on the quality of athletes' achievement striving, relationships to friends in sport, and their competence perceptions. Such knowledge may help create a better psychological sport experience for pediatric athletes. DATA SOURCES/SYNTHESIS: A questionnaire-based cross-sectional field study was carried out among 677 young Norwegian soccer players (aged 10 to 14 years; 504 boys, 173 girls; mean age: boys = 11.9 years, SD = 2.9; girls = 11.2 years, SD = 2.1) taking part in the Norway Cup international youth soccer tournament in 2001. Multivariate analysis of variance (MANOVA) with follow-up canonical correlation was used to examine multivariate relationships between supportive and pressuring behavior and athletes' psychosocial experiences. RESULTS: Joint pressuring behaviors from parents and coaches related positively to maladaptive achievement striving, as indicated by overconcern for mistakes, doubt about one's soccer actions, and lowered perceptions of soccer competence. Mirroring these findings, predominantly supportive coach-created psychological climates were related to a linear pattern of psychological outcomes comprising high-quality friendships, positive competency perceptions, and the absence of specific worries related to achievement striving. CONCLUSIONS: Supportive, mastery-oriented coach influence seems beneficial for constructive psychosocial outcomes in pediatric athletes, and athletes experiencing a joint social pressure to excel from coaches and parents may benefit less psychosocially through sport.

Achievement↗

PubMed2000

Polygyny, mate-guarding, and posthumous fertilization as alternative male mating strategies.

Alternative male mating strategies within populations are thought to be evolutionarily stable because different behaviors allow each male type to successfully gain access to females. Although alternative male strategies are widespread among animals, quantitative evidence for the success of discrete male strategies is available for only a few systems. We use nuclear microsatellites to estimate the paternity rates of three male lizard strategies previously modeled as a rock-paper-scissors game. Each strategy has strengths that allow it to outcompete one morph, and weaknesses that leave it vulnerable to the strategy of another. Blue-throated males mate-guard their females and avoid cuckoldry by yellow-throated "sneaker" males, but mate-guarding is ineffective against aggressive orange-throated neighbors. The ultradominant orange-throated males are highly polygynous and maintain large territories; they overpower blue-throated neighbors and cosire offspring with their females, but are often cuckolded by yellow-throated males. Finally, yellow-throated sneaker males sire offspring via secretive copulations and often share paternity of offspring within a female's clutch. Sneaker males sire more offspring posthumously, indicating that sperm competition may be an important component of their strategy.

Animals↗

PubMed2003

Slot: a research platform for investigating multimodal communication.

In this article, we present the spatial logistics task (SLOT) platform for investigating multimodal communication between 2 human participants Presented are the SLOT communication task and the software and hardware that has been developed to run SLOT experiments and record the participants' multimodal behavior. SLOT offers a high level of flexibility in varying the context of the communication and is particularly useful in studies of the relationship between pen gestures and speech. We illustrate the use of the SLOT platform by discussing the results of some early experiments. The first is an experiment on negotiation with a one-way mirror between the participants, and the second is an exploratory study of automatic recognition of spontaneous pen gestures. The results of these studies demonstrate the usefulness of the SLOT platform for conducting multimodal communication research in both human- human and human-computer interactions.

Communication↗

PubMed1984

Type A behavior in women: a review.

This review focuses on characteristics of the Type A behavior pattern in women in studies of demographic characteristics, physiological responses, laboratory performance, and personality. With some exceptions, these characteristics parallel those previously described for Type A men. The incidence of Type A behavior in the United States is comparable for men and women when socioeconomic factors are controlled. Type A behavior in women is positively correlated with socioeconomic status, occupation, education, and incidence of coronary heart disease. Type A women tend to show greater autonomic arousal to laboratory stressors as well as greater time urgency and speed, more goal directedness, a preference to work alone under stress conditions, and more competitiveness/aggressiveness than Type B women. Type A positively correlates with various estimates of anger, hostility, and masculine sex role orientation. Depression and anxiety in Type A's are found to vary as a function of sex role orientation and locus of control. Methodological problems in the existing studies are discussed.

Adolescent↗

PubMed1984

Psychiatric disorders of pre-adolescence in Japan.

We have classified 200 pre-adolescent patients, with whom we have met during the last three years, into the following four types: school refusal and obsessive behavior, psychosomatic disorders, depressive reactions, and schizophrenic disorders. During our therapeutic process, we realized that even though their symptoms seemed varied and severe, they disappeared after comparatively short periods. The pre-adolescent period is a turning point at which the children depart from their earlier relationships with parents and start to form new ones with friends. We facilitated the patients' developmental process in this period so that they would recover naturally by themselves. However, when we looked at the social phenomena which influence the family and children, we noticed that some factors interfered with the pre-adolescents trying to get over the above-mentioned turning point.

Adjustment Disorders↗

PubMed2000

Carrying capacity and demographic stochasticity: scaling behavior of the stochastic logistic model.

The stochastic logistic model is the simplest model that combines individual-level demography with density dependence. It explicitly or implicitly underlies many models of biodiversity of competing species, as well as non-spatial or metapopulation models of persistence of individual species. The model has also been used to study persistence in simple disease models. The stochastic logistic model has direct relevance for questions of limiting similarity in ecological systems. This paper uses a biased random walk heuristic to derive a scaling relationship for the persistence of a population under this model, and discusses its implications for models of biodiversity and persistence. Time to extinction of a species under the stochastic logistic model is approximated by the exponential of the scaling quantity U=(R-1)(2) N/R(R+1), where N is the habitat size and R is the basic reproductive number.

Animals↗

PubMedDate not supplied

The effect of antidepressant drugs on dominance behavior in rats competing for food.

Wistar male rats were maintained on a regimen of restricted access to food. The animals were randomly paired and placed in a special apparatus containing the feeder constructed in such a manner that only one rat at a time could drink sweetened milk. The dominance-subordination (d-s) relationship developed in about 80% of the pairs. This was manifested by the dominant rat eating for a longer period of time than the submissive rat. Clonidine (0.1 mg/kg ip) given to the dominant rats abolished the stable d-s hierarchies. Tricyclic antidepressants and mianserin given for 5 consecutive days prevented the clonidine action. Yohimbine, the antagonist of alpha 2 adrenoceptors produced a similar effect. Drugs belonging to other groups (e.g. neuroleptics and anxiolytics) had no effect on the clonidine-induced suppression of dominance.

Animals↗

PubMed1978

Relationship of the type A coronary-prone behavior pattern to achievement, power, and affiliation motives.

The present investigation examined the relationship of Pattern A as assessed by the Jenkins Activity Survey (JAS) and interview to measures of job involvement and a series of motivation constructs included because of their descriptive resemblance to Pattern A. The Type A scores were unrelated to achievement, power, and affiliation motives. Individuals high on resultant achievement motivation (high on nAch and low on test anxiety) scored as extreme Type A's on the JAS. Job involvement was also related to JAS Type A measures but was unrelated to the interview Type A. Evidently Pattern A, because of its multidimensional nature, is not strongly related to individual constructs. As our knowledge increases about the Pattern A characteristics that contribute to coronary-proneness, we can more adequately develop measures of those characteristics and individually relate them to current psychological constructs.

Achievement↗

PubMed1996

Effects of game structure on boys' satisfaction and participation.

Inhabiting level is defined as the number of tasks to be performed in a setting in relation to the number of people who will perform those tasks and has been found to influence the behaviors and psychological experiences of participants. In this study, the structural organization of a children's game was manipulated to create three different levels of inhabiting. Boys (n = 108) were classified as having low, medium, or high throwing skills. Teams consisting of one player from each skill level were created using stratified random sampling. Teams then played an underinhabited game (two ongoing tasks per player), an adequately inhabited game (one ongoing task per player), and an overinhabited game (one task rotated among three players). Satisfaction with each game was measured by a questionnaire following play. Observational rating scales were used to assess players' degree of involvement and affective expression during play. Boys reported significantly greater satisfaction and displayed significantly greater involvement and positive affect in the underinhabited game than in either one or both of the other games.

Child↗

PubMed2006

Characterizing warfare in red teaming.

Red teaming is the process of studying a problem by anticipating adversary behaviors. When done in simulations, the behavior space is divided into two groups; one controlled by the red team which represents the set of adversary behaviors or bad guys, while the other is controlled by the blue team which represents the set of defenders or good guys. Through red teaming, analysts can learn about the future by forward prediction of scenarios. More recently, defense has been looking at evolutionary computation methods in red teaming. The fitness function in these systems is highly stochastic, where a single configuration can result in multiple different outcomes. Operational, tactical and strategic decisions can be made based on the findings of the evolutionary method in use. Therefore, there is an urgent need for understanding the nature of these problems and the role of the stochastic fitness to gain insight into the possible performance of different methods. This paper presents a first attempt at characterizing the search space difficulties in red teaming to shed light on the expected performance of the evolutionary method in stochastic environments.

Algorithms↗

PubMed2001

Exposure to westernization and dieting: a cross-cultural study.

OBJECTIVES: The study aimed to establish whether an index of exposure to westernization would predict dieting behavior over and above the predictors of body mass index (BMI) and social influences. The study also sought to compare dieting behaviors among adolescents from three different cultural backgrounds. METHOD: A total of 100 females from Beijing, China, 60 females of Chinese heritage living in Sydney, Australia, and 100 female Australians of no Chinese background were assessed. The exposure to westernization index incorporated the country of birth, the predominant language spoken at home, the country of birth of one's parents, and the country of residence. RESULTS: Exposure to westernization was found to be a significant predictor of dieting status. The westernization index remained an important predictor when BMI and social influences to diet were taken into account. Interestingly, the Chinese Australian girls dieted the least, although the Chinese girls living in China perceived more influence from their peers to diet, despite their lower BMI. CONCLUSION: The exposure to westernization index provides a useful assessment of important influences on dieting in adolescent females.

Adolescent↗

PubMed2002

Implicit power motivation predicts men's testosterone changes and implicit learning in a contest situation.

This study tested the hypothesis that implicit power motivation moderates men's testosterone responses to victory or defeat in a contest situation. It also explored to what extent postvictory testosterone increases are associated with enhanced implicit learning of behavior instrumental for winning a contest. Salivary testosterone levels were assessed in 66 male adults several times before and after a contest whose outcome (winning or losing against a competitor on an implicit learning task) was varied experimentally. Among participants low in activity inhibition, a measure of impulse control, the power motive was a significant positive predictor of testosterone increases (15 min postcontest; r = 0.71, P = 0.01) and implicit learning (r = 0.68, P < 0.05) after a victory, whereas it was a significant negative predictor of implicit learning (r = -0.58, P = 0.01) but not of testosterone increases (r = -0.08, ns) after a defeat. Moreover, among participants low in activity inhibition testosterone increases were associated with enhanced implicit learning (r = 0.38, P < 0.05) and there was statistical evidence that in winners testosterone increases mediated the effect of power motivation on implicit learning. Participants high in activity inhibition did not display this pattern of results.

Adult↗

PubMed2004

Recognition of competitors by male golden hamsters.

Golden hamsters, like many animals, form dominant/subordinate relationships after aggressive encounters. We examined whether behavioral responses by males that won or lost fights would differ toward familiar and unfamiliar male stimulus animals. In Experiment 1, male winners or losers of fights explored an arena containing a confined stimulus animal that was either familiar or novel and had either won or lost a fight. Compared to dominant males, losers spent less time in proximity to stimulus males and investigated them less. Losers also displayed higher levels of stretch-attend postures (indicative of risk assessment) than winners, and they showed more escape and locomotion in response to familiar winners than to unfamiliar winners, indicating recognition of the male that they had lost to. In Experiment 2, losers scent marked less to the odors of a familiar winner than to those of an unfamiliar winner. Thus, male hamsters appear to use familiarity with a former opponent's odors to adaptively regulate their responses to variations in social threat.

Aggression↗

PubMed1985

Relinquishment of control and the type A behavior pattern: the role of performance evaluation.

We investigated the role of information processing in the control relinquishment decisions of Type As and Bs. Pairs of subjects worked independently on a task and received feedback indicating that their partner had performed at a comparable or superior level. On a second task, subjects combined their efforts and made decisions concerning who would work on different parts of that task. One third of the subjects made this decision before completing an evaluation of the initial performances. Another third completed the evaluation without knowing that they would subsequently make a control decision. The final third of the subjects completed their evaluations knowing that a control decision would follow. Results indicated that when the evaluations were completed last, or when the evaluations were completed first but without knowledge of the impending decision, Type As relinquished less control to a superior partner than did Type Bs. When the evaluations were completed with knowledge of an impending control decision, Type As and Bs did not differ in their decisions. These results suggest that under certain conditions, Type As use an automatic or mindless decision style with potentially maladaptive consequences.

Achievement↗

PubMed1994

Group social context and children's aggressive behavior.

Very little is known about the influence of the social-psychological context on children's aggressive behavior. The purpose of this research was to examine the interrelations of group contextual factors and the occurrence of aggressive behavior in 22 experimental play groups of 7- and 9-year-old African-American boys. Group context was examined before, during, and after an aggressive act as well as during nonaggressive periods. The results showed that there are dimensions of group context (i.e., negative affect, high aversive behavior, high activity level, low group cohesion, competitiveness) that were related to the occurrence of aggressive behavior between 2 children in the group. Group context influenced how children reacted to aggression between its members (e.g., siding with the victim), which in turn influenced the quality of the postaggression group atmosphere. This study suggests that individual-within-context information be incorporated into theories of aggression among children.

Affect↗

PubMed1987

Type A behavior pattern and self-evaluation of abilities: empirical tests of the self-appraisal model.

The self-appraisal model proposes that Type A behavior reflects active attempts to generate diagnostic information about abilities, particularly in situations that evoke high uncertainty. In Study 1, subjects were provided feedback indicating high or low uncertainty about underlying abilities in two domains. When subjects were more uncertain of their ability in one domain than in the other, Jenkins-Activity-Survey-defined Type As (but not Type Bs) subsequently constructed tests that were biased to assess the more uncertain domain. Study 2 examined postfailure performance. The model holds that Type As perform poorly because they suspend information gathering when faced with evidence that requisite abilities are absent. Results indicated that deficits emerged only if Type As believed that a second task assessed the same abilities as the initial task on which they failed. A final study examined social comparison among Type As and Bs. Results indicated that Type As engaged in social comparison to obtain diagnostic information, primarily when they were uncertain of their ability levels.

Adult↗

PubMed2006

Scent marking as resource defense by female Lemur catta.

Because ring-tailed lemurs (Lemur catta) are a female-dominant, female-philopatric species in which the females provide the majority of parental care and troop defense, resource defense is a possible function of female lemur scent marking. To test this hypothesis, I conducted three studies. First, I presented captive, individually housed females with a series of samples of female scent, each from a different female, to determine whether they would respond to those samples and discriminate between them. Second, I reanalyzed data from a focal animal study of four females in two adjacent troops in Berenty Reserve, Madagascar, to determine female marking rates before, during, and after the mating season, and to clarify the relationship among positions of feeding, intertroop defense, and scent marking. The third study was based on ad libitum observations of the sniffing and marking behavior of a troop in Berenty Reserve during a year when they traveled far out of their home range. The females in study 1 investigated female scent samples but provided no evidence that they discriminated between them. In study 2 the wild females marked throughout the study and did not limit their marking to the mating season. They deposited significantly more of their marks in a zone of confrontation with adjacent troops, where they also did the majority of their feeding, and they increased their rate of marking during agonistic intertroop confrontations. The females determined the positions of their scent marks and deposited the first mark in the majority of countermarking sequences. When the females traveled out of their defended range in study 3, they significantly decreased their rate of marking and increased their rate of sniffing spots but not marking them. All evidence gathered so far supports the hypothesis that one function of female ring-tailed lemur scent marking is to provide intergroup information that is then used to reinforce the border of the defended resource.

Animal Communication↗

PubMed2005

Biased evaluations of in-group and out-group spectator behavior at sporting events: the importance of team identification and threats to social identity.

Previous researchers have demonstrated that sport fans often exhibit in-group bias by reporting more positive evaluations of fellow in-group fans than of rival out-group fans. The authors designed the present investigation to extend previous research by replicating past efforts in a field setting and to advance our understanding of the impact of social identity threat. The present authors hypothesized that, in addition to the base-level in-group bias effect, the bias effect would be most pronounced in situations involving a threat to one's social identity. The authors believed that fans of a losing team and fans of a home team would experience threats to their identity and, consequently, exhibit particularly high levels of in-group favoritism. Further, because past researchers had shown that one's level of group identification plays a vital role in social perception, the present authors predicted an interaction in which the greatest amount of bias would be exhibited by highly identified fans rooting for a home team that had lost. Data gathered from spectators (N = 148) at 2 North American college basketball games confirmed the authors' expectations, with the exception that the supporters of the winning team reported higher levels of bias. The authors discussed the factors underlying the unexpected game outcome effect and the use of in-group bias as a coping strategy.

Adaptation, Psychological↗