The present thesis explores factors and processes associated with the artistic profession and development of opera singers. The profession of opera singers has a long story deriving its origin in early 1600s in Italy. What is performed on opera stages today is written in the musical scores in the 18th and 19th century. The question arises how the modern opera singers live, learn and excel in their contemporary pursuit in order to meet the high demands on performance. The initial study identified health issues related to the professional activity of opera singers. Qualitative and quantitative measurements indicated that psychological problems were associated with a distinct worry for possible negative evaluation from significant others and a fear of vocal indisposition. A range of health-promoting activities was demonstrated aiming at preventing the occurrence of somatic problems that could cause vocal indisposition. Psychosocial problems concerned difficulties to maintain a family life and relations due to irregular working hours. In Study II, the psychological and physiological effects of singing lessons were investigated with respect to amateur and professional levels of singing experiences. Amateur singers experienced more well-being measured by self-reports of emotional states and by lower levels of stress hormones than professionals. In Study III, narrative accounts were collected to identify factors and processes in the artistic development during higher opera education. A descriptive model was created that embraced the development of various skills such as singing technique, means of expressiveness and interpersonal skills. Outcome variables from the education were artistic autonomy, artistic competence and change in self-concept. In Study IV, personality characteristics were assessed among elite students in opera and business education representing an artistic versus a traditional educational streaming. Female opera students, female business and male business students shared the personality characteristic of extraversion indicating a disposition towards sensation seeking. Male opera singers exhibited a profile of elevated levels of emotionality. In general, the findings across the studies demonstrate that the individual development of operatic artistry is a complex process where health-related issues, personality characteristics, skills acquisition and sociocultural values are critical constituents. A major result was the marked focus on the instrument per se, the voice. Vocal functioning in singing was described as a means of enabling operatic singing, a mode for artistic expression and indicator of health.

Simulation is an important tool when training is hazardous, time consuming, or expensive. Simulation can also be used to enhance reality by adding features normally not available in the real world. The aim with this work has been to develop and evaluate methods that could improve learning in oral radiology utilising a radiation-free simulator environment. Virtual reality software for radiographic examinations was developed. The virtual environment consisted of a model of a patient, an x-ray machine, and a film. Simulated radiographic images of the patient model could be rendered as perspective projections based on the relative position between the individual models. The software was incorporated in an oral radiology simulator with a training program for interpretation of spatial relations in radiographs. Projection geometry was validated by comparing length dimensions in simulated radiographs with the corresponding theoretically calculated distances. The results showed that projection error in the simulated images never exceeded 0.5 mm. Dental students participated in studies on skill in interpreting spatial information in radiographs utilising parallax. Conventional and simulator based training methods were used. Training lasted for 90 minutes. Skill in interpreting spatial information was assessed with a proficiency test before training, immediately after training, and eight months after training. Visual-spatial ability was assessed with mental rotations test, version A (MRT-A). Regression analysis revealed a significant (P<0.01) association between visual-spatial ability and proficiency test results after training. At simulator training, proficiency test results immediately after training were significantly higher than before training (P<0.01). Among students with low MTR-A scores, improvement after simulator training was higher than after conventional training. Eight months after simulator training proficiency test results were lower than immediately after training. The test results were, however, still higher than before training. In conclusion, the simulation software produces simulated radiographs of high geometric accuracy. Acquisition of skill to interpret spatial relations in radiographs is facilitated for individuals with high visual-spatial ability. Simulator training improves acquisition of interpretative skill and is especially beneficial for individuals with low visual-spatial ability. The results indicate that radiology simulation can be an effective training method.

Background: For children with developmental coordination disorder (DCD), the acquisition and performance of everyday visual-motor activities such as buttoning, shoe tying, cutting with scissors or writing, presents a major challenge. Regardless of the activity considered, children with DCD are typically slower and less accurate than their peers. Given the well-acknowledged difficulties of children with DCD, it is surprising to find very few research studies systematically exploring visual-motor skill acquisition and performance in children with DCD. Objective: The overall objective of this study was to systematically describe visual-motor skill acquisition and task performance in children with DCD. Methods: Twenty-four children (8 years 11 months to 12 years 11 months) were recruited for this study; 12 children with DCD, 12 children developing typically with regards to their motor skills. A computer-based aiming task completed with three different cursor controls of increasing levels of difficulty (mouse, joystick, novel controller) was designed for this study. Mixed-effect modelling and visual graph analyses were performed to describe the influence of motor ability and task difficulty on visual-motor skill acquisition and task performance. Results: Motor ability modulated the impact of task difficulty on visual-motor skill acquisition and task performance. Children with DCD were as fast and as accurate as their peers in their initial performance of the simple, well-learned task (mouse). However, they were slower and less accurate when performing the complex and novel visual-motor task. Over repeated trials, the visual-motor task performance of children with DCD improved on all tasks, even for the simple. With regard to the complex, novel task, once children with DCD understood the features of the task, their performance also improved and approached that of their peers. Conclusion: While children with DCD can generally be characterized as less accurate and slower than their peers, this characterization needs to be specified and qualified; it is probably best not applied to a well-learned task.

Although widely used, little is known about the nature of expertise involved in functional task analysis, methods used to discover and represent a task structure in terms of goals and subgoals. Training studies indicated that learning task analysis is not trivial. To counter the "task analysis is an art" explanation, this dissertation approached task analysis as a skill acquisition problem that can be understood through scientific inquiry. Two studies were designed to capture and characterize experienced and novice performance. Professional (Study 1) and novice (Study 2) task analysts conducted task analyses on six tasks from two domains (cooking, communication). Master task analyses were created for each task and served as a basis for analysis. Some similar patterns to the task analysis products and errors were observed for the hierarchy dimensions (breadth and depth of analysis), subgoal focus, and versatility. However, differences in separating subgoals (verb-noun pairs) were observed and may be further investigated in the future. Future directions could also focus on understanding the association between the general approach (breadth and depth-first) and the characteristics of the task analysis products. Skill components of functional task analysis were derived from the findings in both studies conducted for this dissertation.

This study provided an examination of a comparison of the acquisition of skills between two different instructional conditions in teaching reading of vocabulary to high school students with moderate and severe disabilities. A comparison of the acquisition between the use of words with pictures and words alone was completed. An adapted alternating treatment design replicated across 4 participants was used to evaluate the differences in efficiency and effectiveness between the two instructional strategies (words with pictures and words alone). Results indicate both strategies were effective.

Background: For children with developmental coordination disorder (DCD), the acquisition and performance of everyday visual-motor activities such as buttoning, shoe tying, cutting with scissors or writing, presents a major challenge. Regardless of the activity considered, children with DCD are typically slower and less accurate than their peers. Given the well-acknowledged difficulties of children with DCD, it is surprising to find very few research studies systematically exploring visual-motor skill acquisition and performance in children with DCD. Objective: The overall objective of this study was to systematically describe visual-motor skill acquisition and task performance in children with DCD. Methods: Twenty-four children (8 years 11 months to 12 years 11 months) were recruited for this study; 12 children with DCD, 12 children developing typically with regards to their motor skills. A computer-based aiming task completed with three different cursor controls of increasing levels of difficulty (mouse, joystick, novel controller) was designed for this study. Mixed-effect modelling and visual graph analyses were performed to describe the influence of motor ability and task difficulty on visual-motor skill acquisition and task performance. Results: Motor ability modulated the impact of task difficulty on visual-motor skill acquisition and task performance. Children with DCD were as fast and as accurate as their peers in their initial performance of the simple, well-learned task (mouse). However, they were slower and less accurate when performing the complex and novel visual-motor task. Over repeated trials, the visual-motor task performance of children with DCD improved on all tasks, even for the simple. With regard to the complex, novel task, once children with DCD understood the features of the task, their performance also improved and approached that of their peers. Conclusion: While children with DCD can generally be characterized as less accurate and slower than their peers, this characterization needs to be specified and qualified; it is probably best not applied to a well-learned task.

In this thesis, specific practice conditions were examined for skill acquisition and transfer of perceptual-cognitive-motor processes underlying dynamic and complex performance. The availability of visual and cognitive processes during practice was modulated to examine contribution of each process to the skill acquisition using a novel computer-based task where participants were required to select and execute decisions to move a cursor to a target whilst avoiding random moving objects. Results demonstrated that practice with necessary information and processes improved the task performance, whereas limiting the underlying processes attenuated skill acquisition. Subsequently, the underlying processes were examined by measuring eye movements and condition-action pairs. Successful skill acquisition was underpinned by the modified visual search and decision making processes through practice. However, limiting necessary sensory information and decoupling cognitive processing during practice developed specific sensorimotor behaviour that did not lead to successful task performance. These results provided an insight of the skill acquisition by suggesting that when a task requires the acquisition of perceptual-cognitive-motor processes to be successful, integration of these processes would be necessary, whereas decoupling of these processes would limit skill acquisition. Moreover, transfer of acquired processes was examined between two tasks. Both tasks required the acquisition of similar perceptual-cognitive processes in order to select successful cursor trajectories, but the main goal differed between tasks. In addition, for both tasks a yoked condition aimed to limit cognitive processes to investigate the role of transfer-appropriate processing in skill acquisition. Results showed positive transfer indicating that practice on another task improved performance on the other task, whereas limiting cognitive processes attenuated the skill acquisition and transfer. Transfer would be maximised when the underlying processes between practice and transfer domain are similar or matched, whereas the transfer would be attenuated when the necessary processes are decoupled during practice. The overall findings extend the research in perceptual-cognitive-motor processes and have several theoretical and applied implications.

Piano pedagogy is the study of the teaching of piano performance. Several effective methods have been developed since the early 1700's, but lack empirically supported techniques. Immediate feedback procedures have been shown to be effective with skill acquisition in various capacities within the literature. While some innovative techniques are being developed which utilize technologies such as video and sensor-based feedback, the true impact of these interventions has not been empirically validated. There is also a paucity of research in the behavioral literature evaluating the efficacy of immediate feedback procedures in acquisition of music performance. The current study evaluated the effectiveness of an immediate tactile feedback procedure for teaching basic introductory piano to new learners by teaching three unique scales, proper hand/finger positioning, rhythm and tempo. All three participants successfully acquired the different skill sets which supported the learning of a simplified arrangement for a preferred song on the part of the participants.

Behavioral skills training (BST) has been proven effective in helping children with autism spectrum disorder (ASD) acquire new skills. Little research had been done to evaluate the effect of BST on the acquisition of sport skills within this population, and no research exists in regards to using BST to teach dance skills to individuals with ASD. The purpose of this study was to evaluate the effectiveness of BST for teaching dance steps to children diagnosed with ASD. This study used a multiple baseline across behaviors design. The dance movements that were targeted consisted of a tap step, a leap, and a turn. Skill acquisition was scored using a task analysis for each dance step to calculate percentage correct. This study found that the use of BST increased the percentage correct of each dance step from baseline levels in all three participants.

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