a b s t r a c tObjectives: Grounded in Self-Determination Theory (SDT), this study examined the mediating role of students' experiences of need satisfaction and need frustration in associations between perceived teaching style and students' motivation and oppositional defiance in the context of physical education. Specifically, we tested an integrated model including both a 'bright' path from perceived autonomysupportive teaching through need satisfaction toward autonomous motivation and a 'dark' pathway from perceived controlling teaching through need frustration toward controlled motivation, amotivation, and oppositional defiance. Design: Cross-sectional study. Methods: To investigate the proposed paths structural equation modeling was used in a sample of 499 secondary school students (44% boys, M age ¼ 15.77 ± 1.16). Results: We found that perceived autonomy-supportive and controlling teaching, as well as need satisfaction and need frustration, constitute different constructs relating distinctively to motivational outcomes. Consistent with the notion of a bright and dark path, perceived autonomy support was related primarily to autonomous motivation, with need satisfaction mediating this association, whereas perceived controlling teaching was related primarily to controlled motivation and amotivation, through need frustration. Perceived controlling teaching also displayed a direct and unique relationship with oppositional defiance. Conclusions: To more accurately capture the detrimental effects of controlling teaching, this teaching dimension along with its consequences in terms of need frustration and motivational outcomes needs to be studied in its own right. It is also discussed that effective teacher training may raise awareness among teachers about the motivational risks associated with controlling practices.

Guided by Self-Determination Theory, we offer an integrative and fine-grained analysis of teachers' classroom motivating style (i.e., autonomy support, structure, control, and chaos) to resolve existing controversies in the literature, such as how these dimensions relate to each other and to educationally important student and teacher outcomes. Six independent samples of secondary school teachers (N ϭ 1332, M age ϭ 40.9 years) and their students (N ϭ 1735, M age ϭ 14.6 years) read 12 ecologically valid vignettes to rate four dimensions of teachers' motivating styles, using the Situations-in-School (SIS) questionnaire. Multidimensional scaling analyses of both the teacher and the student data indicated that motivating and demotivating teaching could best be graphically represented by a two-dimensional configuration that differed in terms of need support and directiveness. In addition, eight subareas (two subareas per motivating style) were identified along a circumplex model: participative and attuning, guiding and clarifying, demanding and domineering, and abandoning and awaiting. Correlations between these eight subareas and a variety of construct validation and outcome variables (e.g., student motivation, teacher burnout) followed an ordered sinusoid pattern. The discussion focuses on the conceptual implications and practical advantages of adopting a circumplex approach and sketches a number of important future research directions. Educational Impact and Implications StatementThe present study suggests that rather than categorizing secondary school teachers as either motivating or demotivating, this approach reveals that an attuning and guiding approach relate to the most adaptive pattern of teacher and student outcomes, whereas an opposite pattern is found for a domineering and abandoning approach. This greater clarity allows teachers to gain a more precise insight into their own teaching style so that they adopt a more need-supportive style that benefits their students and themselves.

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The aim of the present study was to evaluate the effects of a middle school physical activity and healthy eating intervention, including an environmental and computer-tailored component, and to investigate the effects of parental involvement. A random sample of 15 schools with seventh and eight graders was randomly assigned to one of three conditions: (i) intervention with parental involvement, (ii) intervention alone and (iii) control group. In 10 schools, an intervention, combining environmental changes with computer-tailored feedback, was implemented over 2 school years. In five intervention schools, increased parental support was added. Physical activity was measured with questionnaires in the total sample and with accelerometers in a sub-sample of children. Fat intake, fruit, water and soft drink consumption were measured using food-frequency questionnaires. Results showed significant positive intervention effects on physical activity in both genders and on fat intake in girls. Parental involvement did not increase intervention effects. It can be concluded that physical activity and eating behaviours of middle school children can be improved by school-based strategies combining environmental and personal interventions. The use of personalized computer-tailored interventions seems to be a promising tool for targeting adolescents but needs to be further explored.

According to self-determination theory, teachers can motivate students by supporting their psychological needs for relatedness, competence, and autonomy. The present study complements extant research (most of which relied on self-report measures) by relying on observations of need-supportive teaching in the domain of physical education (PE), which allows for the identification of concrete, real-life examples of how teacher need support manifests in the classroom. Seventy-four different PE lessons were coded for 5-min intervals to assess the occurrence of 21 need-supportive teaching behaviors. Factor analyses provided evidence for four interpretable factors, namely, relatedness support, autonomy support, and two components of structure (structure before and during the activity). Reasonable evidence was obtained for convergence between observed and student perceived need support. Yet, the low interrater reliability for two of the four scales indicates that these scales need further improvement.

Background: Low levels of physical activity are characteristic in preschoolers. To effectively promote physical activity, it is necessary to understand factors that influence young children's physical activity. The present study aimed to investigate how physical activity levels are influenced by environmental factors during recess in preschool.

Classification of techniques used in self-determination theory-based interventions in health contexts: An expert consensus study. Motivation Science.

Despite evidence for the utility of self-determination theory in physical education, few studies used objective indicators of physical activity and mapped out between-class, relative to between-student, differences in physical activity. This study investigated whether moderate-to-vigorous physical activity (MVPA) and rated collective engagement in physical education were associated with autonomous motivation, controlled motivation, and amotivation at the between-class and between-student levels. Participants were 739 pupils (46.3% boys, Mage = 14.36 ±1.94) from 46 secondary school classes in Flanders (Belgium). Multilevel analyses indicated that 37% and 63% of the variance in MVPA was explained by between-student and between-class differences, respectively. Students' personal autonomous motivation related positively to MVPA. Average autonomous class motivation was positively related to between-class variation in MVPA and collective engagement. Average controlled class motivation and average class amotivation were negatively associated with collective engagement. The findings are discussed in light of self-determination theory's emphasis on quality of motivation.