The bottlenosed dolphin’s (Tursiops truncatus) understanding of gestures as symbolic representations of its body parts

We assigned gestural symbols to nine body parts of a bottlenosed dolphin (Tursiops truncatus). The dolphin was first trained to touch any floating object it chose with the body part indicated by a gestural symbol. In Experiment 1, we tested the dolphin’s ability to now touchspecific gesturally referenced objects using specific gesturally referenced body parts. In Experiment 2, we tested its ability to either touch or toss gesturally referenced objects with gesturally referenced body parts or to simply display those body parts or shake them back and forth. The acts of touching, tossing, displaying, and shaking were each associated with specific gestures and appeared in random sequences within test sessions. The results demonstrated highly significant levels of performance throughout these tasks, including many successes on the first occasions of new body-part uses. These findings provided strong evidence that the gestural symbols we used for body parts were semantically processed and understood by the dolphin as representing those body parts.     

Images of industrial life and vocational training: Scouting as a liminal space for educating a workers’ elite in 1920s Luxembourg

ABSTRACT

This paper looks at a specific set of corporate images, namely photographs of apprentices of the Luxembourg steel conglomerate ARBED, and analyses how young workers are depicted in these images. The paper draws on a collection of 2251 glass-plate negatives (re)presenting ARBED’s industrial cosmos, including its vocational school the Institut Emile Metz. The roughly 160 images of apprentices contained in the collection put on display the apprentices’ bodies and a variety of activities in different contexts. The images’ contents testify to the institute’s programmatic hybridity and the constant (re-)mix of formal and semi-formal learning activities intended to educate natural, urban, mobile and communal men and future workers. Our focus is on Boy Scouts’ activities in a variety of different environments, which have functioned as a liminal space for educating a workers’ elite, mitigating the risks of industrialisation and fostering social harmony and cultural belonging.     

Online Versus Face-to-Face Training of Critical Time Intervention: A Matching Cluster Randomized Trial

This study examined the effectiveness of online education to providers who serve people experiencing homelessness, comparing online and face-to-face training of Critical Time Intervention (CTI), an evidence-based case management model. The authors recruited 184 staff from nineteen homeless service agencies to participate in one of two training conditions: (a) Online Training + Community of Practice or (b) Face-to-Face Training + Telephone Consultation. Each group received twenty-four hours of instruction and support. Through baseline, follow-up, and nine-month posttraining surveys, the authors examined satisfaction, knowledge gains, knowledge retention, and readiness to implement CTI. Although satisfaction rates were higher among participants in the face-to-face group, the two training conditions produced comparable pre/postknowledge gains. Furthermore, both groups showed increased knowledge retention scores at nine-month follow-up, with the online group scoring higher than the face-to-face group.     

A Domain-Referenced Approach to Diagnostic Testing Using Generalizability Theory

This paper describes a four-step approach to constructing diagnostic test profiles that provide precise but practical information on students' instructional needs. The approach is based on the specification and analysis of a domain and uses generalizability theory to determine which skills within the domain need to be assessed to diagnose gaps in students' skills and to estimate score profiles. A 64-item test of pronoun use was constructed to represent 32 categories of usage defined by different combinations of five factors in the domain. Generalizability analyses were conducted to determine the optimal number of categories to be included in students' profiles and the number of items needed for each category, and to produce univariate and multivariate estimates of students' universe scores. Multivariate profiles of universe scores were the most accurate and differed substantially from observed score and univariate universe score profiles.     

Nobel for a minus sign

In this article we survey the research work for which the Nobel Prize in Physics was awarded in 2004, and discuss the three scientists — David Gross, H David Politzer and Frank Wilczek, who received the honour.     

The Role of Informal Support Networks in Teaching the Nature of Science

This study reports the participation of 13 secondary science teachers in informal support networks and how that participation was associated with their nature of science (NOS) teaching practices 2 to 5 years after having graduated from the same science teacher education program. The nine teachers who participated in informal support networks taught the NOS at high/medium levels, while the four non-participating teachers taught the NOS at low levels. The nine high/medium NOS implementation teachers credited the informal support networks for maintaining/heightening their sense of responsibility for teaching NOS and for helping them navigate institutional constraints that impede effective NOS instruction. Several high/medium NOS instruction implementers initially struggled to autonomously frame and resolve the complexities experienced in schools and thus drew from the support networks to engage in more sophisticated forms of teacher decision-making. In contrast, the NOS pedagogical decisions of the four teachers not participating in support networks were governed primarily by the expectations and constraints experienced in their schools. Implications of this study include the need for reconsidering the structure of teacher mentorship programs to ensure they do not promote archaic science teaching practices that are at odds with reform efforts in science education.

     

The role of school psychology in preventing depression

To advance the role of school psychologists in mental health prevention and wellness activities, in this article we describe (a) a social ecological theory for guiding school‐based prevention research, (b) the role of schools in the development and prevention of depression, (c) a continuum of school‐based support for meeting the needs of children who are currently depressed for preventing future internalizing distress for all children, and (d) social and political factors that must be considered if lasting change is to occur. We conclude with specific considerations for school psychologists. © 2004 Wiley Periodicals, Inc. Psychol Schs 41: 763–775, 2004.     

Collaborative research in contexts of inequality: the role of social reflexivity

This article reports on the role and value of social reflexivity in collaborative research in contexts of extreme inequality. Social reflexivity mediates the enablements and constraints generated by the internal and external contextual conditions impinging on the research collaboration. It fosters the ability of participants in a collaborative project to align their interests and collectively extend their agency towards a common purpose. It influences the productivity and quality of learning outcomes of the research collaboration. The article is written by fourteen members of a larger research team, which comprised 18 individuals working within the academic development environment in eight South African universities. The overarching research project investigated the participation of academics in professional development activities, and how contextual, i.e. structural and cultural, and agential conditions, influence this participation. For this sub-study on the experience of the collaboration by fourteen of the researchers, we wrote reflective pieces on our own experience of participating in the project towards the end of the third year of its duration. We discuss the structural and cultural conditions external to and internal to the project, and how the social reflexivity of the participants mediated these conditions. We conclude with the observation that policy injunctions and support from funding agencies for collaborative research, as well as support from participants’ home institutions are necessary for the flourishing of collaborative research, but that the commitment by individual participants to participate, learn and share, is also necessary.