Suboptimal choice in nonhuman animals: Rats commit the sunk cost error

The present experiments investigated the sunk cost error, an apparently irrational tendency to persist with an initial investment, in rats. This issue is of interest because some have argued that nonhuman animals do not commit this error. Two or three fixed-ratio (FR) response requirements were arranged on one lever, and an escape option was arranged on a second lever. The FRs were of different sizes, and escaping was the behavior of interest. Several variables that might influence the decision to persist versus escape were manipulated: the number of trials with different FR schedules in an experimental session (Exps. 1 and 2), effort to escape (Exp. 2), and the size of the larger FR (Exp. 3). The sunk cost error would result in never escaping, and the optimal strategy would be to escape from the larger FR. The main variable that determined persisting versus escaping was the size of the large FR. Rats that escaped from the large FR-apparently optimal behavior-did so at a suboptimal point, and hence committed the sunk cost error.     

Inclusion of students with disability in physical education: a qualitative meta-analysis

Inclusive physical education (PE) for students with disability (SWD) evolved in line with ethical requirements and stakeholder morality. While inclusive PE is embraced at a conceptual level and desired at the classroom level, the complexity of successful implementation often remains overlooked in policy and curriculum guidelines. Qualitative studies on inclusive PE are generally small-scale, context-specific and limited in applicability to other settings, while current narrative reviews may indiscriminately select qualitative findings. To overcome existing limitations and extend understanding of world-wide teaching and learning experiences within inclusive PE, we conducted qualitative meta-analysis to systematically synthesise primary qualitative findings into secondary interpretations. First, 7 electronic databases were systematically searched to identify peer-reviewed articles published between 2000 and 2016. Of 672 identified records, 12 met pre-set inclusion criteria. Second, an inductive-deductive hybrid analysis approach revealed two major and eight minor themes. Overall, themes indicated physical educators conceptually embraced inclusive PE with a creative outlook for collaboration, knowledge and support. Cooperative and supportive efforts between physical educators, SWD, parents and teacher aides are valued in creating PE environments that effectively respond to learner diversity. While access to practical teaching guidance remains scarce, this study may contribute to physical educator practice.     

Effectiveness of hand cooling and a cooling jacket on post-exercise cooling rates in hyperthermic athletes

This study compared the effects of a hand cooling glove (～16°C water temperature; subatmospheric pressure of ?40 mmHg) and a cooling jacket (CJ) on post-exercise cooling rates (gastrointestinal core temperature, Tc; skin temperature, Tsk) and cognitive performance (the Stroop Colour–Word test). Twelve male athletes performed four trials (within subjects, counterbalanced design) involving cycling at a workload equivalent to 75% ?O₂max in heat (35.7?±?0.2°C, 49.2?±?2.6% RH) until a Tc of 39°C or exhaustion occurred. A 30-min cooling period (in 22.3?±?0.3°C, 42.1?±?3.6% RH) followed, where participants adopted either one-hand cooling (1H), two-hand cooling (2H), wore a CJ or no cooling (NC). No significant differences were seen in Tc and Tsk cooling rates between trials; however, moderate effect sizes (d?=?0.50–0.76) suggested Tc cooling rates to be faster for 1H, 2H and CJ compared to NC after 5 min; 1H and CJ compared to NC after 10 min and for CJ to be faster than 2H at 25–30 min. Reaction times on the cognitive test were similar between all trials after the 30 min cooling/no-cooling period (p?>?.05). In conclusion, Tc cooling rates were faster with 1H and CJ during the first 10 min compared to NC, with minimal benefit associated with 2H cooling. Reaction time responses were not impacted by the use of the glove(s) or CJ.     

The role of guidance in computer-based problem solving for the development of concepts of logic

The effect of two instructional variables,manipulation of objects and guidance, inlearning to use the logical connective,conditional, was investigated. Instructions for72 first- and second year social sciencestudents were varied in the computer-basedlearning environment Tarski's World, designedfor teaching first-order logic (Barwise &Etchemendy, 1992). Guidance, which wasoperationalised by giving the learners problemsthat guided them to all different types ofbasic problem situations that could be derivedfrom the conditional by stimulating them tomanipulate or to imagine to manipulate thegeometrical objects, significantly influencedthe scores from pre- to post test.Manipulation, which was operationalised bygiving the learners a visual representation inwhich (concrete) geometrical objects could bemanipulated, yielded significant results frompost- to retention test. The results supportthe authors' view that guidance in combinationwith the possibility to manipulate objects in adomain, support the acquisition of knowledgeand skills in that domain. Guidance leads tothe students seeing all situations that arerelevant for the development of new knowledge,which has a positive effect directly afterinstruction. The possibility to manipulateleads to the students playing around in such away that they (systematically) experience theresults of their actions by the feedback given,having an effect after two weeks ofnon-instruction.     

The Development of Preschoolers’ Living Kinds Concept: A Longitudinal Study

Given limitations in the integrative scope of past research, basic questions about the organization and development of preschoolers’ living kinds concept remain open to debate. This study was designed to address past limitations through use of a longitudinal design, extensive stimulus set, and alternate indices of understanding. Thirty‐five English‐speaking 3‐year‐olds from middle‐class families in Albuquerque, NM participated in four testing sessions over 1 year. Indices of understanding included statements that preschoolers generated about various living and nonliving objects, biological properties they attributed to the objects, and their characterization of objects as “alive” or not. Results reveal a multifaceted picture of developmental change in preschoolers’ living kinds concept involving both the construction and elaboration of a core biological understanding.     

Learning design for multiple modes of provision: the Zambian community school teacher development programme

Abstract

The use of technology to support learning is becoming ubiquitous in Africa. However, technology is more often used to distribute information rather than as a tool to mediate learning. The work presented here on a programme for Zambian community school teachers (non-traditional students) illustrates how learning design allied to appropriate theoretical concepts make use of technology to mediate learning. The objective of this course was to support Zambian community school teachers, with little formal teacher education, to use interactive methods to support their teaching practices. The research makes use of a constructivist-hermeneutic-interpretivist-qualitative paradigm to critically evaluate the learning design by experts. A social constructivist framework for learning design and technology mediation was used to create and evaluate learning resources. The work illustrates how a distance education paper-based course design is enhanced by the use of contemporary learning theory and digital technology to model good interactive classroom practice.     

Becoming a Cultural Tourist: Explorations in Caribbean Poetry

Starting with the writer’s own experience as a reader, this article discusses poetry by Eric Roach, Derek Walcott, Linton Kwesi Johnson, John Agard, Edward Baugh, Michael Smith and Velma Pollard. It explores the sense of place felt by writer and reader, going on to analyse the poets’ use of Nation Language, poetic metre and intertextuality in order to create distinctive and authoritative poetic voices. The relationship with the oral tradition and performance is also considered, as is the effect these voices have on a non-Caribbean reader encountering the poems for the first time. The article goes on to present the responses of a class of Year 8 students (12–13-year-olds) who were also reading the poems for the first time, evaluating the extent to which they had moved beyond a tourist’s engagement with the poetry through their study of language, context and performance. Lastly, the article argues for an approach to poetry teaching that recognises the fundamental importance of performance and voice in appreciating Caribbean poetry and considers whether this is possible within the new National Curriculum.     

An exploratory study of students’ constructions of gender in science,engineering and technology

Despite an appreciation of the need to increase gender sensitivity and awareness among tertiary students in the field of science, engineering and technology (SET), there is a paucity of research that explores how students in this field construct gender. A greater understanding of such constructions can assist in transforming gender relations and creating a more gender‐sensitive learning environment for SET students. This paper explores SET students’ constructions of gender and the discourses they draw on when constructing female participation in SET. Focus group discussions were conducted with male and female students from an urban South African university. A discourse analysis identified various restrictive discourses that resist female participation in SET and value traditional gender roles for men and women, as well as more marginal voices that support gender equity. The paper concludes with recommendations for interventions aimed at challenging restrictive constructions of gender in higher education.