Failure to obtain value enhancement by within-trial contrast in simultaneous and successive discriminations

The present research tested the generality of the “work ethic“ effect described by Clement, Feltus, Kaiser, and Zentall (2000). In Experiment 1, we trained 10 pigeons on a pair of either simultaneous or successive discriminations. One discrimination followed a high-effort requirement (20 pecks to the center key) and the other followed a low-effort requirement (1 peck). Contrary to Clement et al.’s results, we found that preferences between the S⁺ and S⁻ stimuli in transfer tests depended on the event that initiated the trial: Pigeons preferred the stimulus from the baseline discrimination whose initiating event was most dissimilar from that preceding the test trial. Preferences were similar but less extreme in the successive condition. In Experiment 2, we investigated whether test preferences depended on the amount of training. A total of 12 pigeons were trained on a pair of simultaneous discriminations, except that test sessions were scheduled after every three baseline sessions. Preferences increased across test sessions but were similar to those in Experiment 1. Together with Vasconcelos, Urcuioli, and Lionello-DeNolf (2007a), our study represents a second failure to replicate Clement et al.’s work ethic effect. The finding that preference depends on the event that initiates the test trial suggests that choice probes may not provide unambiguous assessments of stimulus value.     

Trends in children's fiction in the United Kingdom during the 1980s

Through her work onChildren's Books of the Year Julia Eccleshare has a unique overview of the development of fiction written for children during the 1980s.CLE invited her to detect trends in the writing and publishing of children's books during the past decade.Julia Eccleshare is a freelance editor, advisor to publishers, and reviewer of children's books for national newspapers. She has written or edited some 15 books, includingTreasure Islands: The Woman's Hour Guide to Children's Reading: BBC 1988.     

Children’s private speech during algorithmic and heuristic drawing tasks

This cross-sectional study examined the private speech and task-related activity of 108 school-aged children while they drew pictures of real objects (i.e., a house, a person, and an animal) and make-believe objects (i.e., a house, a person, and an animal) to investigate developmental and task-related changes in self-regulation. Composite scores for each first-grade (N=36), third-grade (N=36), and fifth-grade (N=36) participant were calculated from the repeated raw frequencies of overall private speech and private speech in conjunction with task-related behavior during the two types of drawing activities (i.e., real and make-believe). Scores were then analyzed using regression analysis and 3×2 (Grade×Task Type) ANOVA’s to explore study hypotheses. This study found that: (1) there was a concave curvilinear developmental trend in overall private speech production, (2) participants utilized more private speech during heuristic (i.e., make-believe) drawing tasks than algorithmic (i.e., real) drawing tasks, and (3) school-aged children used private speech in conjunction with task-related behavior in a different manner during the two types of drawing activities. These findings contribute to the Vygotskian perspective regarding the development and function of private speech.     

Community Perspectives and Subjective Quality of Life

Community integration has increasingly become the focus of research and practice in the field of intellectual disability. Recent research has demonstrated that community integration needs to be more than simply living within a community, people need to use the community and feel like they belong. This study pioneers the use of a sense of community measure to better understand the degree to which feelings of belonging are associated with quality of life. One hundred and thirty two students from both urban and rural schools participated in this study. Half of them had an intellectual disability and the remainder were matched peers without a disability. Life satisfaction scores for adolescents with an intellectual disability were found to correlate significantly with reported levels of activity, friends and support in the neighbourhood. People with an intellectual disability reported lower usage of some community facilities and significantly lower social belonging and empowerment than their matched nondisabled peers. The groups did not differ significantly on the sense of community measure and the above patterns were true for both urban centres and rural towns.     

Children with autism illuminate the role of social intention in word learning

To what extent do children with autism (AD) versus typically developing children (TD) rely on attentional and intentional cues to learn words? Four experiments compared 17 AD children (M age=5.08 years) with 17 language- and 17 mental-age-matched TD children (M ages=2.57 and 3.12 years, respectively) on nonverbal enactment and word-learning tasks. Results revealed variability in all groups, but particularly within the AD group. Performance on intention tasks was the most powerful predictor of vocabulary in the AD group but not in the TD groups. These findings suggest that word learning cannot be explained exclusively by either attentional or intentional processes, and they provide evidence of a special role for intentional understanding in the vocabulary development of AD children.     

Mobile learning in higher education: A comparative analysis of developed and developing country contexts

The purpose of this paper is to compare and contrast characteristics of use and adoption of mobile learning in higher education in developed and developing countries. A comparative case study based on a survey questionnaire was conducted with 189 students (undergraduate and postgraduate) from Makerere University in Uganda and the University of Adelaide in Australia. The Unified Theory of Acceptance and Use of Technology (UTAUT) was employed as the theoretical framework. The results indicated that higher education students in developed and developing countries use a range of technologies for learning, with major differences between Uganda and Australia. The study concludes that mobile learning in higher education in developed and developing country contexts is still at an experimental stage with students using mobile devices in pedagogically limited ways.