Hypercompetitiveness reflects the need to compete and win at all costs as a means of maintaining or enhancing one's own self-worth (Horney, 1937; Ryckman, Hammer, Kaczor, & Gold, 1990). This need to win at any cost is linked to expressions of verbal and physical aggression, which may take a toll on important relationships (Hibbard & Buhrmester, 2010). We sought to explore whether parental bonds with mothers and fathers (i.e., care, rejection, autonomy, and overprotection) were indirectly linked to aggression via the mediating mechanisms of hypercompetitiveness and feelings of anger. A sample of 581 university students (316 females; 265 males) were used to examine a multiple-group structural equation model. Tests of structural invariance revealed clear moderation by gender. For instance, the pathway from verbal to physical aggression was stronger for males compared to females. For females only, higher levels of father care were indirectly linked to fewer acts of physical aggression. For both genders, higher levels of mother overprotection were indirectly linked to more acts of physical aggression through increased hypercompetitiveness and, in turn, more feelings of anger. Findings regarding maternal overprotection are consistent with both Evolutionary and Social Learning theories of behavior.

Background: Social Learning Theory suggests how one conceptualizes time will be passed from parent to child (Bandura & Walters, 1963). Through the lens of Behavioral Economics Theory (Vuchinich & Simpson, 1998), impaired control may be characterized as consuming alcohol as a form of immediate gratification as a choice over more distal rewards. Because impaired control reflects a self-regulation failure specific to the drinking situation, it may be directly related to time-perspectives. Objectives: This investigation explored whether or not the indirect influences of perceived parenting styles on alcohol use and related problems is mediated by both facets of time-perspective (e.g. hedonism, present-fatalism, future, past-positive, past-negative) and impaired control over drinking. Methods: We examined a structural equation model with 391 (207 women; 184 men) college student drinkers. We used an asymmetric bias-corrected bootstrap technique to conduct mediational analyses (MacKinnon, 2008). Results: Higher levels of past-positive time-perspective were indirectly linked to both less alcohol use and fewer alcohol-related problems through less impaired control. In contrast, higher levels of present-fatalism were indirectly linked to more alcohol use through more impaired control. Higher levels of father permissiveness and mother authoritarianism were indirectly linked to both more impaired control and alcohol use through more present-fatalism. In addition, higher levels of father authoritarianism were indirectly linked to more alcohol use through more hedonism. Conclusions/Implications: Our results support the notion that drinking beyond one's self-prescribed limits is associated with time-perspectives related to negative aspects of the parent-offspring socialization process, such as fatalism.

Developing and maintaining a user base that actively contributes to an online community is often essential to a website's success. For many online communities, developing such a user-base can be challenge for web designers. Working from a functionalist perceptive, two studies explored how the individual difference of interdependent self-construal was related to participation and engagement in the online community MovieLens.org. In the first study, we found that those individuals high in interdependent self-construal were particularly unlikely to contribute to the website. In an attempt to increase the online engagement of this type of user, we then created an interactive web feature that tapped into the social motives of those high in interdependent self-construal. This feature allows users to create Top Five movie lists that can be shared with other users. In the second study, we found that interdependent self-construal was associated with more use of the Top Five lists feature, that using this feature was associated with more interest in seeing others' lists, which in turn predicted more interest in MovieLens. Implications for web design and psychological theory are discussed.

Administrators of online communities face the crucial issue of understanding and developing their user communities. Will new users become committed members? What types of roles are particular individuals most likely to take on? We report on a study that investigates these questions. We administered a survey (based on standard psychological instruments) to nearly 4000 new users of the MovieLens film recommendation community from October 2009 to March 2010 and logged their usage history on MovieLens. We found that general volunteer motivations, pro-social behavioral history, and community-specific motivations predicted both the amount of use and specific types of activities users engaged in after joining the community. These findings have implications for the design and management of online communities.

Administrators of online communities face the crucial issue of understanding and developing their user communities. Will new users become committed members? What types of roles are particular individuals most likely to take on? We report on a study that investigates these questions. We administered a survey (based on standard psychological instruments) to nearly 4000 new users of the MovieLens film recommendation community from October 2009 to March 2010 and logged their usage history on MovieLens. We found that general volunteer motivations, pro-social behavioral history, and community-specific motivations predicted both the amount of use and specific types of activities users engaged in after joining the community. These findings have implications for the design and management of online communities.

The current study aimed to test whether relationship power could act as a mediator of the relationship between intimate partner violence and depression. The proposed mediation model was based on the theory of gender and power and on previous research of intimate partner violence and depression. Survey results from a sample of 327 single undergraduate women lent support to the hypothesis stating that relationship power accounts for some of the association between intimate partner violence and depression. Results revealed that women who felt powerless had higher rates of intimate violence victimization and higher levels of depression; a mediation analysis revealed that sexual relationship power mediated the relationship between intimate partner violence and depression. Future interventions targeting the prevention of intimate partner violence among young women may want to utilize an empowerment approach to decrease their likelihood of experiencing dating violence victimization and their subsequent risk for depression.