On the existence of category-specific impairments. A reply to Parkin and Stewart

Parkin and Stewart (this issue) criticize Sartori, Miozzo, and Job's (this issue) demonstration of a category-specific naming impairment for living things when sets of living and non-living things were matched for familiarity, visual complexity, name frequency, and visual similarity. In this paper we discuss the points raised by Parkin and Stewart and argue that they do not undermine our demonstration of a category-specific impairment.     

Social network predictors of bullying and victimization

This study examined whether bullies, victims, and aggressive victims (those who are both bullies and victims) differed on classroom social network variables, gender, and ethnicity. Survey data were collected from a primarily Latino and Asian sample of 1,368 Southern California 6th graders (mean age = 11.3 years). Logistic regression analyses were performed to determine whether network characteristics and ethnicity were associated with each of the outcome variables. Consistent with social cognitive theory, friends' participation in aggressive behaviors was positively associated with being a bully or an aggressive victim, and negatively associated with being a victim. Consistent with social dominance theory, the number of friendship nominations received was negatively associated with being a victim. Female bullies received fewer friendship nominations, but had a higher proportion of reciprocated friendships. Victims were disproportionately Asian. The findings suggest that bullying prevention efforts targeting highly aggressive students may also diffuse to their friends, and that assertiveness training in handling aggressive situations may successfully combat bullying and aggression.     

Adolescents' Possible Selves and Their Relationship to Global Self-Esteem

Recent research indicates that adolescent girls'self-esteem is lower than that of boys, and adolescence has been identified as a particularly problematic period for female self-esteem. However, many studies use global self-esteem measures that mask important differences within the domains of self-concept that contribute to self-esteem. Further, some self-esteem measures assess components of male self-esteem but overlook aspects of female self-esteem. The possible selves approach was used to identify categories of adolescent male and female self-concept that correlate with self-esteem. Subjects were 212 high-school students. The sample was primarily (96%)Caucasian. Results indicate that female self-esteem is related to perceived likelihood of hoped-for and feared possible selves in multiple domains, whereas male self-esteem is related only to the likelihood of one domain of hoped-for possible selves.     

Is more always better? An examination of the nonlinear effects of perceived organizational support on individual outcomes

A wide range of research has accumulated detailing the positive associations of perceived organizational support (POS) with desirable workplace outcomes (e.g., high performance, high commitment, low deviance). In the process, there has been an implicit assumption that these relationships are linear, with ever-increasing POS resulting in ever-increasing positive outcomes. However, there are theoretical and practical reasons to question whether these relationships may be nonlinear rather than linear. Our results offer support for the notion that the relationships between POS and key individual outcomes rated by the supervisor may best be represented as nonlinear. We conclude by highlighting the implications for both theory and practice.     

A Comparison of Underage,Young, Middle,and Late Adults in Indicated Prevention Following Impaired Driving

The authors examined age differences in baseline features and program response in individuals completing indicated prevention (Prime For Life^®) for impaired driving. Risk perception, substance use, and support differed by age at baseline and, despite improvements, continued to differ postprogram.     

Arbitrary reference,numbers, and propositions

Reductionist realist accounts of certain entities, such as the natural numbers and propositions, have been taken to be fatally undermined by what we may call the problem of arbitrary identification. The problem is that there are multiple and equally adequate reductions of the natural numbers to sets (see Benacerraf, 1965), as well as of propositions to unstructured or structured entities (see, e.g., Bealer, 1998; King, Soames, & Speaks, 2014; Melia, 1992). This paper sets out to solve the problem by canvassing what we may call the arbitrary reference strategy. The main claims of such strategy are 2. First, we do not know which objects are the referents of proposition and numerical terms since their reference is fixed arbitrarily. Second, our ignorance of which object is picked out as the referent does not entail that no object is referred to by the relevant expression. Different articulations of the strategy are assessed, and a new one is defended.     

Females in the forefront: time-based intervention effects on impulsive choice and interval timing in female rats

Impulsive choice has been implicated in substance abuse, gambling, obesity, and other maladaptive behaviors. Deficits in interval timing may increase impulsive choices, and therefore, could serve as an avenue through which suboptimal impulsive choices can be moderated. Temporal interventions have successfully attenuated impulsive choices in male rats, but the efficacy of a temporal intervention has yet to be assessed in female rats. As such, this experiment examined timing and choice behavior in female rats, and evaluated the ability of a temporal intervention to mitigate impulsive choice behavior. The temporal intervention administered in this study was successful in reducing impulsive choices compared to a control group. Results of a temporal bisection task indicated that the temporal intervention increased long responses at the shorter durations. Further, results from the peak trials within the choice task combined with the progressive interval task suggest that the intervention increased sensitivity to delay and enhanced timing confidence. Overall, these results indicate that a temporal intervention can be a successful avenue for reducing impulsive choice behavior in female rats, and could contribute to the development of behavioral interventions to prevent impulsive choice and maladaptive behaviors that can be applied to both sexes.