Tracking Multiple Statistics: Simultaneous Learning of Object Names and Categories in English and Mandarin Speakers

Two experiments were conducted to examine adult learners' ability to extract multiple statistics in simultaneously presented visual and auditory input. Experiment 1 used a cross‐situational learning paradigm to test whether English speakers were able to use co‐occurrences to learn word‐to‐object mappings and concurrently form object categories based on the commonalities across training stimuli. Experiment 2 replicated the first experiment and further examined whether speakers of Mandarin, a language in which final syllables of object names are more predictive of category membership than English, were able to learn words and form object categories when trained with the same type of structures. The results indicate that both groups of learners successfully extracted multiple levels of co‐occurrence and used them to learn words and object categories simultaneously. However, marked individual differences in performance were also found, suggesting possible interference and competition in processing the two concurrent streams of regularities.     

Exploring the Relationship Between Autistic-Like Traits and ADHD Behaviors in Early Childhood: Findings from a Community Twin Study of 2-Year-Olds

Behaviors characteristic of autism and ADHD emerge in early childhood, yet research investigating their comorbidity has focused on older children. This study aimed to explore the nature of the relationship between autistic-like traits and ADHD behaviors in a community sample of 2-year-olds. Twins from the Boston University Twin Project (N = 312 pairs) were assessed by their parents on autistic-like traits and ADHD behaviors using the Childhood Behavior Checklist. Phenotypic analyses showed that after controlling for general cognitive ability and socioeconomic status, autistic-like traits (total scale as well as social and nonsocial subscales) correlated positively with ADHD behaviors (r = 0.23–0.26). Structural equation model-fitting analyses revealed that there were modest shared genetic influences between ADHD- and autistic traits (genetic correlation = 0.27) as well as some common environmental influences explaining their covariation. Implications for identifying shared biological pathways underlying autistic-like traits and ADHD behaviors are discussed.     

UNDERSTANDING WOMEN'S RISK FOR HIV INFECTION USING SOCIAL DOMINANCE THEORY AND THE FOUR BASES OF GENDERED POWER

Theoretical models to date have fallen short of accounting for the alarming worldwide rates of HIV infection in women through heterosexual contact. In this article, social dominance theory and the four bases of gendered power—force, resource control, social obligations, and consensual ideologies—are used to organize and explain international research findings on women's risk of contracting HIV from male sexual partners. Research suggests that the four bases of gendered power contribute to women having less power than men in heterosexual relationships, resulting in challenges to preventing HIV transmission from male partners. Social dominance theory also recognizes the intersections among various group-based hierarchies, such as race and class, thereby helping explain why women of color and low-income women are disproportionately affected by HIV. The intergroup focus of social dominance theory points to gender inequality as increasing men's risk of HIV infection as well, and the construct of social dominance orientation helps to explain individual differences in HIV risk behavior. We discuss the ways the current theoretical framework can prove useful in helping to guide future research addressing the connections between power and HIV risk, including exploring mediators and links to other theoretical models. We also discuss the implications the framework has for intervention efforts aimed at reducing HIV rates worldwide, such as supporting efforts at increasing women's representation in hierarchy-enhancing positions, incorporating empowerment issues into current interventions, promoting use of female condoms, and targeting heterosexual men for interventions.     

A One-to-One Bias and Fast Mapping Support Preschoolers' Learning About Faces and Voices

A multimodal person representation contains information about what a person looks like and what a person sounds like. However, little is known about how children form these face-voice mappings. Here, we explored the possibility that two cognitive tools that guide word learning, a one-to-one mapping bias and fast mapping, also guide children's learning about faces and voices. We taught 4- and 5-year-olds mappings between three individual faces and voices, then presented them with new faces and voices. In Experiment 1, we found that children rapidly learned face-voice mappings from just a few exposures, and furthermore spontaneously mapped novel faces to novel voices using a one-to-one mapping bias (that each face can produce only one voice). In Experiment 2, we found that children's face-voice representations are abstract, generalizing to novel tokens of a person. In Experiment 3, we found that children retained in memory the face-voice mappings that they had generated via inference (i.e., they showed evidence of fast mapping), and used these newly formed representations to generate further mappings between new faces and voices. These findings suggest that preschoolers' rapid learning about faces and voices may be aided by biases that are similar to those that support word learning.     

The critical place of personalism: Comments on Stern and the special issue

Reflective commentary on the project of the special issue as a whole and on each of the contributions is offered. Evaluation of the place of critical personalism in the twenty-first century and four efforts needed to secure it are then suggested.     

Social cognitive influences on Mexican Americans’ career choices across Holland’s themes

This study examined several propositions of social cognitive career theory ( [Lent et al., 1994] and [Lent et al., 2000]) with a sample of 393 Mexican American college students. It was hypothesized that person input (i.e., age) and background contextual variables (i.e., Anglo orientation, Mexican orientation, familism, instrumentality, and expressivity) would predict career self-efficacy across Holland’s (1997) six RIASEC types. In addition, we examined the proposed relations between career self-efficacy, career interests, and career choice goal across the six RIASEC areas. Our results indicated that (a) Artistic, Social, Enterprising, and Conventional career models were similar across gender and university affiliation groups, (b) gender differences were found in the Realistic career model, (c) institutional affiliation differences were found in the Investigative career model, and (d) the models were a good fit to the data. Implications for future vocational research and career interventions are discussed.     

Why does mentoring work? The role of perceived organizational support

The authors examined the mediating role of perceived organizational support in the relationship between mentoring support received and work attitudes. Perceived organizational support partly mediated the relationship between specific types of mentoring support and job satisfaction and affective organizational commitment. Specifically, sponsorship, exposure and visibility, and role modeling appear to be related to job satisfaction and organizational commitment through perceived organizational support. Perceived organizational support did not appear to mediate the relationship between other specific forms of mentoring support and job satisfaction and organizational commitment.