Rats in a levered T-maze task show evidence of time–place discriminations in two different measures

It is difficult for rats to learn to go to an arm of a T-maze to receive food that is dependent on the time of day, unless the amount of food in each daily session is different. In the same task, rats show evidence of time–place discriminations if they are required to press levers in the arms of the T-maze, but learning is only evident when the first lever press is considered, and not the first arm visited. These data suggest that rats struggle to use time as a discriminative stimulus unless the rewards/events differ in some dimension, or unless the goal locations can be visited prior to making a response. If both of these conditions are met in the same task, it might be possible to compare time–place learning in two different measures that essentially indicate performance before and after entering the arms of the T-maze. In the present study, we investigated time–place learning in rats with a levered T-maze task in which the amounts of food varied depending on the time of day. The first arm choices and first lever presses both indicated that the rats had acquired time–place discriminations, and both of these measures became significantly different from chance during the same block. However, there were subtle differences between the two measures, which suggest that time–place discrimination is aided by visiting the goal locations.     

Peer Influence Via Instagram: Effects on Brain and Behavior in Adolescence and Young Adulthood

Mobile social media often feature the ability to “Like” content posted by others. This study examined the effect of Likes on youths' neural and behavioral responses to photographs. High school and college students (N = 61, ages 13–21) viewed theirs and others' Instagram photographs while undergoing functional Magnetic Resonance Imaging (fMRI). Participants more often Liked photographs that appeared to have received many (vs. few) Likes. Popular photographs elicited greater activity in multiple brain regions, including the nucleus accumbens (NAcc), a hub of the brain's reward circuitry. NAcc responsivity increased with age for high school but not college students. When viewing images depicting risk‐taking (vs. nonrisky photographs), high school students, but not college students, showed decreased activation of neural regions implicated in cognitive control.     

Curriculum Carts and Collaboration: A Model for Training Secondary Science Teachers

This paper describes a unique collaboration between the College of Education (COE) and the Center for Academic Enrichment and Outreach (CAEO) at the University of Nevada Las Vegas. Here we describe our efforts to improve student science performance in traditionally underachieving urban middle schools by embracing our state's highly qualified teacher requirements implemented to gain compliance with the No Child Left Behind Act of 2001 (NCLB). The focus of our collaborative intervention is improving the content and pedagogical content knowledge of a group of existing teachers by fostering a professional learning community among teachers, scaffolding technology within a new master's degree program, and working to build a partnership to provide the necessary technology infrastructure. This paper outlines our intervention from both a practical and theoretical perspective.     

Knowledge, Concepts, and Inferences in Childhood

The role of knowledge in children's inferences was investigated in 3 experiments. Experiment 1 examined developmental changes in the role of categorical membership, perceptual appearance, and item complexity in inferences for natural kind and artifact concepts. Preschoolers (5-year-olds), second graders (8-year-olds), and fourth graders (10-year-olds) were taught novel properties about target concepts and asked whether each of 4 probes had those properties. Probes varied in category membership and perceptual appearance relative to the target item. Item complexity also varied. Experiments 2 and 3 examined inferences with known and unknown concepts for familiar and unfamiliar properties. Older children's knowledge led to differential weighting of categorical information over appearance but only for known concepts and/or familiar properties. Preschoolers made no distinction between category and appearance for either known or unknown concepts. Additionally, as target item complexity increased, older children made more inferences than preschoolers. No differences between inferences about natural kind and artifact concepts were found. The role of theories and knowledge in children's drawing of inferences is discussed.     

Conflicting Views of Realistic Professionalism: Preservice Educators' Concerns Arising from Analysis of Themes in Their Reflective Writings

Current demands for professionalism from society are great, and future educators are concerned that they do not have the stamina and resources to fulfill their personal roles. This research examines 453 reflective writings of 151 preservice teachers, child and youth care providers, and counselors who, despite being asked to identify how their learning could help children, also wrote about their professional concerns. The 406 expressed concerns were identified based on 86 vocabulary leads. The categories of concern were (a) Misbehaviour, Aggression, Violence, and Victimization, (b) Multiculturalism and Diversity, (c) Personal Preparation and Career Choice, (d) The Responsibility of Providing Appropriate Teaching and Learning Methods, and (e) Appropriate Involvement in Children's Lives. The overall highest concern was for Personal Preparation and Career Choice, although the second highest concern for Misbehavior, Aggression, Violence, and Victimization increased dramatically after a special unit on childhood discipline practices was presented to the participants.     

A Historical Examination of Self-Regulation: Helping Children Now and in the Future

Using content and archival analysis as a mixed method research design, this study addresses the broad issue of self-regulation since this subject area first appeared in the developmental psychology journals, addressing the question of whether each historical period had its own particular perspective on self-regulation, or was there, in fact, a progressive development? This research also explored the historical basis of current perspectives in order to provide background and continuity for present theories and the discussion of implications for families, professionals, and communities in supporting the development of self-regulation in infants and children.     

Policy,practice, and reality: exploring a nation-wide technology implementation in Turkish schools

Technology has already become an indispensable part of our lives, and nations around the world see schools as the main agents to prepare their youth for a technology-filled future, and invest important amounts of funding to provide hardware to schools, students and teachers. The Turkish Ministry of National Education is in the midst of the FAT?H project, a nation-wide attempt to provide each classroom with an interactive whiteboard and each student with a tablet computer. In this paper, the authors present interview data from teachers at first-year FAT?H pilot schools who are using these technologies to understand how this national attempt is being translated into practice, and identify what is working and what areas need further attunement. Results show that teachers were especially content with being able to make their lessons visually more appealing for their students. They were, however, not satisfied with the in-service training provided, especially in understanding ways to effectively integrate the technologies into their teaching, and the limitations put upon Internet access from the tablets. The impacts of these tools on their teaching practices were very minimal.     

Extending the testimony problem: evaluating the truth, scope, and source of cultural information

Children's learning--in the domains of science and religion specifically, but in many other cultural domains as well--relies extensively on testimony and other forms of culturally transmitted information. The cognitive processes that enable such learning must also administrate the evaluation, qualification, and storage of that information, while guarding against the dangers of false or misleading input. Currently, the development of these appraisal processes is not clearly understood. Recent work, reviewed here, has begun to address three important dimensions of the problem: how children and adults evaluate truth in communication, how they gauge the inferential potential of information, and how they encode and evaluate its source.