Lay beliefs about meaning in life: Examinations across targets,time, and countries

We examined how lay beliefs about meaning in life relate to experiences of personal meaning. In Study 1 (N = 406) meaning in life was perceived to be a common experience, but one that requires effort to attain, and these beliefs related to levels of meaning in life. Participants viewed their own lives as more meaningful than the average person’s, and technology as both creating challenges and providing supports for meaning. Study 2 (N = 1719) showed cross-country variation in levels of and beliefs about meaning across eight countries. However, social relationships and happiness were identified as the strongest sources of meaning in life consistently across countries. We discuss the value of lay beliefs for understanding meaning in life both within and across cultures.     

Canine responses to familiar and unfamiliar humans

Dogs were observed during controlled approaches by their owners and by strangers. Significant differences between the dogs' responses to their owners and their responses to strangers were found. These results supported the popular belief that dogs respond differently to different persons, and not merely to different situations in which persons are usually encountered.     

Tyrosine hydroxylase activities in the brains of wild Norway rats and silver foxes selected for reduced aggressiveness towards humans

Tyrosine hydroxylase (TH) activity was measured in brains from Norway rats and silver foxes showing wild type aggressiveness and from their counterparts selected over 20-25 generations for reduced aggressiveness towards humans (tameness). TH activity in the brain stem and cortex was increased in tame animals of both species compared with aggressive counterparts. Selection increased hypothalamic TH activity in foxes, but decreased it in rats. There was no difference in TH activity in corpus striatum between the tame and aggressive animals. Fetal TH activity in the posterior part of the brain was higher in tame than aggressive rats at day 20 of embryogensis. Increased TH activity in the brain stem and cortex of adult aggressive rats was observed after treatment of their mothers with hydrocortisone on the days 16 and 18 of pregnancy. This elevation in TH activity was associated with attenuation of the defense behavior of aggressive rats. The data suggested that alterations in neural TH activity in tame rats and foxes may be part of the neurochemical basis of their behavioral phenotype which is developed by selection. © 1994 Wiley-Liss, Inc.     

Aggression,defense, and coping in humans

One way of identifying emotional behaviors across species, language, and cultures is to describe the “instrumental” effects of each particular behavior. Since aggression and defense may be instrumental they also represent coping behavior. The term coping is being used partly to indicate whether or not the behavior is successful and partly to describe how a situation is being handled (coping strategies). This review deals with how these behaviors are observed and quantified in humans and how they are linked to physiological changes. The internal state of the individual is decided by the expectancy of the outcome of a given situation, but each behavior strategy may have specific links to particular brain mechanisms and particular physiological effectors. © 1995 Wiley-Liss, Inc.     

Offensive and defensive bite-target topographies in attacks by lactating rats

The attacks by resident lactating Wistar rats on sexually naive conspecifics of both sexes were examined. Male and female intruders were equally attacked in terms of frequency and number of bites, but the topographies of biting seen in these encounters were different. Similarly to male-male agonistic interactions, females were attacked in a fashion which avoided bites to the head and snout (“offensive” attack), whereas males were frequently bitten on such vulnerable regions (“defensive” attack). This dichotomy in bite pattern suggests that different motivations and functions underlay maternal aggression in these situations. The defensive attack on males may be a deterrent to infanticide since only male intruders counterattack lactating females and kill their pups. The attack on females may be concerned with resource competition.     

Psychological determinants of walking in a Brazilian sample: An application of the Theory of Planned Behavior

Encouraging the use of active travel modes, such as walking or cycling, can contribute to the negative impacts of car overuse, such as sedentarism and obesity, improving individuals' health. Thus, it is important to verify under which circumstances people are willing to use healthier travel modes. A frequently used model to understand walking behavior is Ajzen’s Theory of Planned Behavior, and its extension, the Expanded Theory of Planned Behavior. Although this topic is widely investigated across the world, it is understudied in Brazilian culture. This study reports the psychological determinants of walking behavior in three Brazilian cities, indicating which theoretical model better fits the data: The Theory of Planned Behavior versus Extended Theory of Planned Behavior. Some 3296 residents of Distrito Federal, Florianópolis and Porto Alegre answered a 10-item scale. The face-to-face questionnaires were conducted in the participants’ residence. Most of the respondents were women, with age ranging from 18 to 101 years old. Structural Equation Modeling indicated the Theory of Planned Behavior be more powerful to explain walking behavior than the Expanded Theory of Planned Behavior. Perceived behavioral control and intention were the best predictors of walking. Results indicate that adding variables to the original model not always leads to better goodness of fit indices, suggesting that the components of the Theory of Planned Behavior are satisfactory to explain walking behavior in the Brazilian sample analyzed in this study.     

High school student-athletes’ perceptions and experiences of leadership as a life skill

ObjectivesThe purpose of this study was to gain student-athlete perceptions of: (1) the definition of leadership for high school student-athletes; (2) the process of leadership development in high school sport; and (3) the factors that have helped or hindered leadership transfer between high school sport and other life domains.DesignThis study was grounded in an interpretivist ontological perspective and used focus group interviews to gather insights of student-athletes’ leadership experiences.MethodPurposeful sampling identified 33 high-school student-athlete leaders who were members of student advisory councils for high school state athletic associations in the United States. The 15 females and 18 males participated in focus-group interviews. Reflexive thematic analysis of the interview data was then conducted.ResultsResults revealed that student-athlete leadership was viewed as a skill-set and a mindset, driven by individual agency. As an on-going developmental process, student-athletes gained awareness of leadership skills, increased self-expectations and self-confidence in their use and application of leadership skills, and developed a transformational leadership mindset, as they encountered and engaged with critical learning opportunities in high school sport and gained support from coaches and peers. Leadership application outside of sport was a multidimensional psychological process, including both conscious and implicit elements, and facilitated or constrained by environmental opportunities and social influences.ConclusionsHigh school sport offers a unique context where self-agentic youth leadership development in sport and life can occur through experiential learning opportunities. To this point, future research directions and recommendations for practitioners will be provided.     

Relationship between mousekilling and conspecific aggression in the male rat

In order to investigate the relationships between mousekilling and conspecific aggression, behavioral variables of killer and nonkiller rats were compared in a “resident-intruder” paradigm, in resident as well as in intruder animals. The occurrence of offensive items (offensive sideways, attack) was significantly higher in killer rats when they were residents; their corresponding opponents displayed more defensive behaviors. No significant difference in aggressive behaviors was noted when the comparison was done in the intruders. These results and those of previous studies suggest that there is a correlation between mousekilling and intraspecific offensive behaviors. Some similarities in the situations where both behaviors are elicited–eg, introduction of an unfamiliar intruder into a familiar environment–may contribute to the existence of such a correlation and the possibility of common mechanisms underlying both behaviors is discussed.     

Twenty‐two years of psychological science in Psychological Science

The journal Psychological Science (PS) has undergone various changes over 22 years since its birth in 1990. Analysis of Web of Science's records shows that the publication has increased in volume and collaborations between authors, and has become more international. Keyword analysis suggests the new role of neuroscience in contemporary psychology and indicates that the PS of today is more oriented than in the 1990s towards psychosocial and emotional issues as well as natural situations in our daily lives (ecological validity).     

Rural Chinese youth during the transition into adulthood: Family dynamics and psychological adjustment

Rural youth in China experience numerous challenges during their transition into adulthood. Yet, research on this transition and its relevant influential factors is rare. Through the lens of family systems theory, this study examined the impacts of family dynamics (i.e., interparental and parent–adolescent interactions) in adolescence on the psychological adjustment of youth as they transition into adulthood. Participants were 1330 youth and their mothers in rural Gansu. In 2004, mothers completed questionnaires of interparental and parent–adolescent interactions when youth were adolescents (M_age = 15.03, SD = 1.15). In 2009, youth completed questionnaires of depression and self-esteem when they were emerging adults (M_age = 20.03, SD = 1.15). Results of structural equation modelling suggested that while interparental interactions in adolescence were not associated with the psychological adjustment of youth in emerging adulthood, positive parent–adolescent interactions in adolescence predicted better psychological adjustment of youth in emerging adulthood. Furthermore, mediation analysis showed that although interparental interactions did not directly affect the psychological adjustment of youth, they were positively associated with parent–adolescent interactions, which in turn contributed to the psychological adjustment of youth. The results reveal an enduring influence of family dynamics on psychological adjustment among rural Chinese youth during the transition into adulthood.