The aim of this project was to evaluate the Contingencies for Learning Academic and Social Skills (CLASS) programme in four New Zealand classrooms. Four students with antisocial behaviour were nominated by their teachers to take part in an intervention that included differential attention, increased praise and rewards. Direct observations were made of compliance to teacher instructions, on-task behaviour, teacher praise and teacher instructions. Results indicated that on-task behaviour and compliance to teacher instructions increased during the intervention phase and was maintained during the follow-up. Teachers were also able to increase their rate of praise per hour during the intervention phase and their praise rate remained greater at follow-up than during the baseline phase. In the absence of pre-service and in-service behaviour management training for teachers, the CLASS programme proved to be a useful tool to assist teachers who have to work with children with high rates of antisocial behaviour.

Delay of gratification is the ability to forego an immediate indulgence in lieu of a later, greater reward. Past research has shown that using behavioral strategies may help children to delay gratification longer. The current project tests whether children can learn one such strategy, covering the eyes, through imitation. Four-year-olds saw a model delay gratification using a strategy, using no strategy, or saw no model. They then participated in an accumulation task, where they could earn an incremental sticker reward. Children who saw a strategy showed evidence of imitation by covering their eyes. Unexpectedly, however, this had an adverse influence on their ability to delay gratification. Thus, although children can apply a strategy, its effectiveness may be limited by the type of task used (accumulation) or from an incomplete understanding of the strategy’s function. Additional research is needed to investigate whether delay performance can be promoted by a social example.

Many domains, such as emergency assistance, agriculture, construction, and planetary exploration, will increasingly require effective coordination of teams of robots and humans to accomplish a collection of spatially distributed heterogeneous tasks. Such coordination problems range from those that require loosely coordinated teams in which agents independently perform their assigned tasks, to those that require tightly coordinated teams where all actions of the team members need to be tightly synchronized. The scenarios of interest to this thesis lie between these two extremes, where some tasks are independent and others are related by constraints such as precedence, simultaneity, or proximity. These constraints may be a result of different factors including the complementary capabilities of different types of agents which require them to cooperate to achieve certain goals. The manner in which the constraints are satisfied influences the overall utility of the team. This thesis explores the problem of task allocation, scheduling, and routing for heterogeneous teams with such cross-schedule dependencies. We first describe and position this coordination problem in the larger space of multi-robot task allocation problems and propose an enhanced taxonomy for this space of problems. Recognizing that solution quality is important in many domains, we then present a mathematical programming approach to computing a bounded-optimal solution to the task allocation, scheduling and routing problem with cross-schedule dependencies. Specifically, we present a branch-and-price algorithm operating on a set-partitioning formulation of the problem, with side constraints. This bounded optimal “anytime” algorithm computes progressively better solutions and bounds, until it eventually terminates with the optimal solution. By examining the behavior of this algorithm, we gain insight into the impact on problem difficulty of various problem features, particularly different types of cross-schedule dependencies. Lastly, the thesis presents a flexible execution strategy for the resulting team plans with cross-schedule dependencies, and results demonstrating the approach on a team of indoor robots

The study shows how seven informants, all studying at a university in northern Sweden to become art teachers, perceive and relate to controversial contemporary art in the context of secondary school art education. The study is based on semi-structured interviews. The study contributes to a nuanced view of these informants opinions and thoughts regarding provocative contemporary art, in relation to the school's democratic values ​​and founding mission. The seven informants' responses were compiled thematically linked to the study's purpose and issues to allow for comparisons and analysis. The analysis of the information that was served was based on a qualitative perspective, which has links to hermeneutics. It appears that some of the informants have strong opinions regarding what kind of controversial contemporary art that should not be dealt with in elementary school art education. It is also suggested that contemporary art is an absent element in art education at Sweden's primary schools.

Since its creation in 1998, the Implicit Association Test (IAT) has become a commonly used measure in social psychology and related fields of research. Studies of the cognitive processes involved in the IAT are necessary to establish the validity of this measure and to suggest further refinements to its use and interpretation. The current thesis used ERPs to study cognitive processes associated with the IAT. The first experiment found significant differences in P300 amplitude in the Congruent and Incongruent conditions, which were interpreted as a reflection of greater equivocation in the Incongruent condition. The second experiment tested the task-set switching account of the IAT in much greater detail by analyzing each trial type separately. In the Congruent condition, all trial types elicited the same amplitude P300. Local probability, and the consequent checking and updating of working memory, was thought to be responsible for differences between trials of the Incongruent condition that required or did not require a task switch. The final experiment examined the role of working memory in the IAT by introducing obtrusive and irrelevant auditory stimuli. The results of Experiment 3 indicated that the introduction of an obtrusive and irrelevant auditory increment deviant has little overall effect on the IAT, and a similar effect on switch and no-switch trials within the Incongruent condition. This could have been because both the Congruent and Incongruent conditions of the IAT make such extensive demands on central processing resources that few are available to allow for the switching of attention, or it is possible that the IAT does not require significant updating of working memory. The usefulness of ERPs in the study of the IAT effect is demonstrated by the current research. In particular, the finding that behavioural results were not always consistent with the ERP results demonstrates that electrophysiological measures can complement traditional behavioural measures.

The purposes of this study were to: 1) evaluate the effect of walking speed on gait, balance and cognitive task performance and 2) examine the effect of dual task (cognitive load) on gait balance and cognitive task performance. Twenty young healthy adults (24+6 years of age) were recruited and each participant walked on a motorised treadmill at two speeds(0.5m/s and 0.8m/s), first without performing cognitive tasks, then while performing three types of cognitive loaded tasks. The speed had a significant effect on average and coefficient of variation of temporal gait parameters (P<0.001), cognitive task performance (P<0.001) and center of pressure excursion (P<0.001). No statistically significant effect of speed was found ML trunk displacement. However, dual task (cognitive load) had significant effect on COV of temporal gait (P<0.001), cognition (P<0.001) and trunk motion (P<0.001). In conclusion, the speed and dual task had significant effect on locomotors rhythm, balance, and cognitive performances.

The present thesis examined whether the corvid, Clark’s nutcracker, is able to discriminate knowledge states between human experimenters based upon gestural cues using an object-choice task. To do so, the knowledge state of two experimenters was manipulated – one experimenter was informed, and the other uninformed, as to the location of a hidden food reward. To find the reward, the birds had to use the gesture of the informed experimenter and refrain from using the unreliable gesture of the uninformed experimenter. The nutcrackers responded to the gesture of the informed experimenter at above chance levels when simultaneously presented with the uninformed experimenter’s gesture. When the uninformed experimenter’s gesture was presented alone, the birds continued to follow the gesture. These results suggest the birds learned the gesture was meaningful, perhaps by associative learning, yet when this mechanism was not reliable the nutcrackers based their choices on the knowledge states of the experimenters.

No description available.

This study concerns the decisions and expertise of speech and language therapists (sits) working with preschool children, in particular, the selection and prioritisation of newly referred youngsters for therapy. The literature review covers three aspects: the difficulties of identifying communication disorders in preschool children; the nature of speech & language therapy knowledge; the nature of the selection and prioritisation task. These three aspects provide the theoretical foundations of the study and gave rise to the selection of a multimethod and predominantly qualitative methodology. Using a series of knowledge elicitation tasks, the selection and prioritisation decision was explored. A small group of expert slts participated in semistructured interviews, case history analyses, focus group discussions and card sorting exercises. The results are summarised under three headings: the child, the process and the expertise. The study identifies areas considered significant in the discrimination of priority children. In particular, the co-consideration of the child's communication skills and the supporting communicative context emerged as the key categories. Features within these categories associated with priority and nonpriority children were identified. The process emerged as one whereby sits collected and evaluated baseline descriptions of the child and context. As these findings accumulated, they were judged as to their diagnostic and prognostic significance, as evidence of progress and as potential causes for sit concern. Substantial consensus was demonstrated between sits suggesting that the knowledge elicited emanated from a body of knowledge rather than being idiosyncratic. Even where variation occurred, patterns were evident, reflecting the possible existence of theories-of-action related to differing working contexts. The results are presented as theories-of-action which underpin slts decisions. As such they will be of support to junior sits in their understanding of the selection and prioritisation task and to more experienced slts in making their own decisions explicit.

No description available.