Young Children's Self-Generated Object Views and Object Recognition

Two important and related developments in children between 18 and 24 months of age are the rapid expansion of object name vocabularies and the emergence of an ability to recognize objects from sparse representations of their geometric shapes. In the same period, children also begin to show a preference for planar views (i.e., views of objects held perpendicular to the line of sight) of objects they manually explore. Are children's emerging view preferences somehow related to contemporary changes in object name vocabulary and object perception? Children aged 18 to 24 months old explored richly detailed toy objects while wearing a head camera that recorded their object views. Both children's vocabulary size and their success in recognizing sparse three-dimensional representations of the geometric shapes of objects were significantly related to their spontaneous choice of planar views of those objects during exploration. The results suggest important interdependencies among developmental changes in perception, action, word learning, and categorization in very young children.     

Vicarious Peer Victimization and Adolescent Violence: Unpacking the Effects of Social Learning,General Strain,and Peer Group Selection

This study examines how the victimization of a close friend, or vicarious peer victimization, affects adolescent violence. Competing processes linking vicarious peer victimization and violence are empirically evaluated including social learning theory, general stain theory, and peer group selection models. The analyses use peer-network data from three waves of the National Longitudinal Study of Adolescent Health (Add Health). Regression models demonstrate that the association between vicarious peer victimization and violence is attributed primarily to peer-group selection and social learning mechanisms. These findings indicate that victimization affects not only the immediate victims of violence, but permeates throughout adolescent social networks.     

Frequency of stuttering during challenging and supportive virtual reality job interviews

This paper seeks to demonstrate the possibility of manipulating the frequency of stuttering using virtual reality environments (VREs). If stuttering manifests itself in VREs similarly to the way it manifests itself in real world interactions, then VREs can provide a controlled, safe, and confidential method for treatment practice and generalization. Though many researchers and clinicians recognize the need for generalization activities in the treatment of stuttering, achieving generalization in a clinical setting poses challenges to client confidentiality, safety, and the efficient use of a professionals’ time. Virtual reality (VR) technology may allow professionals the opportunity to enhance and assess treatment generalization while protecting the safety and confidentiality of their clients. In this study, we developed a VR job interview environment which allowed experimental control over communication style and gender of interviewers. In this first trial, persons who stutter (PWS) experienced both challenging and supportive VR job interview conditions. The percentage of stuttered syllables was calculated for both interviews for each participant. Self-reported ratings of communication apprehension and confidence were also obtained, and were not significantly correlated with stuttering severity. Results indicated that interviewer communication style affected the amount of stuttering produced by participants, with more stuttering observed during challenging virtual interviews. Additionally, the amount of stuttering observed during the VR job interviews was significantly, positively correlated with the amount of stuttering observed during an interview with the investigator prior to VR exposure. Participants’ subjective reports of the VR experience indicate reactions similar to those they report experiencing in the real world. Possible implications for the use of VR in the assessment and treatment of stuttering are discussed.

Educational objectives: After reading this article, the reader will be able to—(1) list some of the challenges to treatment generalization; (2) describe how virtual reality technology can assist in alleviating some of these challenges; (3) describe how the frequency of stuttering varies across two different virtual environments.     

‘Necessity’ and ‘provability’ in the later wittgenstein

I present a new interpretation of Wittgenstein's later philosophy of logic and mathematics. This interpretation, like others, emphasizes Wittgenstein's attempt to reconcile platonistic and constructivistic approaches. But, unlike other interpretations, mine explains that attempt in terms of Wittgenstein's position about the relations between our concepts of necessity and provability. If what I say here is correct, then we can rescue Wittgenstein from the charge of naive relativism. For his relativism extends only to provability, and not to necessity.     

How Does Self-Complexity of Identity Moderate the Relationship between Strain and Crime?

Studies are inconclusive as to which characteristics exacerbate or inhibit criminal reactions to strain. This study examines how self-complexity of identity conditions the relationship between strain and crime. Those who are lower in self-complexity, or those with few overlapping identities, should be more likely to respond to strain with crime than those who are higher in self-complexity. This proposition was tested through analyzing a cross-sectional survey of 357 undergraduates at a Southeastern university. Strong support was found for the conditioning effect of self-complexity on serious crime while partial support was found for this effect on property crime.