Need Support and Need Thwarting: A Meta-Analysis of Autonomy, Competence, and Relatedness Supportive and Thwarting Behaviors in Student Populations.

In this meta-analysis, we review the nomological networks of six need-supportive and need-thwarting categories, as defined by self-determination theory (SDT), and as they apply to students in educational contexts. We conducted a synthesis of 8693 correlations from 637 samples (N = 388,912). A total of 72 covariates were examined, resulting in 183 meta-analytic effects reported. Results indicate that teachers and parents who experience psychological need satisfaction and well-being are seen as more supportive. Supportive teacher behaviors correlated positively with a range of desired student outcomes, including performance, engagement, and well-being. Thwarting behaviors tended to display the opposite pattern. Our results are consistent with the theoretical expectations of SDT, yet questions remain concerning the incremental validity of these constructs. We highlight the need for further research on (a) factors that cause teachers to provide support and (b) the specific behaviors within each category to distinguish these categories and increase practical utility.

Do Patients With Neck of Femur Fractures (NOFF) Experience Long Pre-Hospital Delays in the United Kingdom?

Background and objective It is well documented that prolonged preoperative delay is associated with increased morbidity and mortality among patients presenting with neck of femur fractures (NOFF). The target time from arrival to the emergency department (ED) to be transported to the theatre for these patients in England is 36 hours. However, the time before the patient arrives at the hospital is not often considered. In light of this, we aimed to assess the duration of the waiting period for NOFF patients before they are brought to the ED. Methods Data were collected retrospectively using IT and theatre systems at a single trust. A total of 223 consecutive NOFF patients undergoing operations in the six-month period between February and August 2020 were reviewed. Results The mean time for ambulance response was one hour and 50 minutes, whereas the time spent in the ambulance was one hour and 47 minutes and the total pre-hospital time was three hours and 37 minutes (range: 59 minutes to 14 hours and 41 minutes). The mean time from ED arrival to the theatre was 33 hours and one minute. The mean total preoperative time was 36 hours and 38 minutes. Conclusion The mean pre-hospital time of three hours and 37 minutes represents approximately 10% of the 36-hour national target. Pre-hospital time is often overlooked when considering the order of the list for the theatre. It may be possible to reduce morbidity and mortality by prioritising patients with a longer pre-hospital time, especially given our finding that some patients may wait up to 14 hours. We recommend that pre-hospital time be considered for all patients with NOFF.

Pathways to Student Motivation: A Meta-Analysis of Antecedents of Autonomous and Controlled Motivations.

Students' self-determined motivation (acting out of interest, curiosity, and abiding values) is associated with higher academic well-being, persistence, and achievement. Self-determination theory posits that self-determined motivation is dependent on the satisfaction of three psychological needs (relatedness, competence, and autonomy), which are in turn facilitated through need-supportive behaviors from notable others. In this meta-analysis, conducted over 144 studies and more than 79,000 students, we sought to overview pathways to student motivation in order to verify (1) how do psychological needs rank in the strength of their prediction of self-determined motivation and (2) which autonomy-support providers (parents or teachers) are the most relevant for psychological need satisfaction in students and self-determined motivation. Results show that teacher autonomy support predicts students' need satisfaction and self-determined motivation more strongly than parental autonomy support. In addition, competence is the most positive predictor of self-determined motivation, followed by autonomy and then by relatedness.

Student Motivation and Associated Outcomes: A Meta-Analysis From Self-Determination Theory.

Student outcomes are influenced by different types of motivation that stem from external incentives, ego involvement, personal value, and intrinsic interest. The types of motivation described in self-determination theory each co-occur to different degrees and should lead to different consequences. The associations with outcomes are due in part to unique characteristics and in part to the degree of autonomy each entails. In the current meta-analysis, we examine these different types of motivation in 344 samples (223,209 participants) as they relate to 26 performance, well-being, goal orientation, and persistence-related student outcomes. Findings highlight that intrinsic motivation is related to student success and well-being, whereas personal value (identified regulation) is particularly highly related to persistence. Ego-involved motives (introjected regulation) were positively related to persistence and performance goals but also positively related with indicators of ill-being. Motivation driven by a desire to obtain rewards or avoid punishment (external regulation) was not associated with performance or persistence but was associated with decreased well-being. Finally, amotivation was related to poor outcomes. Relative weights analysis further estimates the degree to which motivation types uniquely predict outcomes, highlighting that identified regulation and intrinsic motivation are likely key factors for school adjustment.

The tripartite model of intrinsic motivation in education: A 30-year retrospective and meta-analysis.

INTRODUCTION: Intrinsic motivation is a well-established concept in psychology, yet, different types of intrinsic motivation have not been thoroughly investigated. We examined covariates associated with three types of intrinsic motivation from self-determination theory (SDT) within the education context: IM to know, IM to accomplish, and IM to experience stimulation. METHODS: A meta-analysis was conducted on samples examining the tripartite model of intrinsic motivation between 1989 and 2019. In total, 78 samples met the inclusion criteria, representing 41,633 participants across multiple nationalities. The average age of participants across samples was 19 years, and 58.2% of participants were female. Path analysis and relative weight analysis were applied to meta-analytically derived correlations. DISCUSSION: Results indicated that IM to know and IM to accomplish were moderately strong predictors of adaptive student outcomes. However, results also indicated a large degree of redundancy including indistinguishable antecedent pathways. IM to experience stimulation was positively, yet, less strongly associated with adaptive outcomes. However, it did appear to be empirically distinct from the remaining intrinsic motivation types in respect to its outcomes and antecedents. CONCLUSION: Intrinsic motivation appears to be a relatively homogeneous construct within educational psychology. Specification of different types of intrinsic motivation is likely to provide only marginal benefit.

Rapid accelerations of Antarctic Peninsula outlet glaciers driven by surface melt.

Atmospheric warming is increasing surface melting across the Antarctic Peninsula, with unknown impacts upon glacier dynamics at the ice-bed interface. Using high-resolution satellite-derived ice velocity data, optical satellite imagery and regional climate modelling, we show that drainage of surface meltwater to the bed of outlet glaciers on the Antarctic Peninsula occurs and triggers rapid ice flow accelerations (up to 100% greater than the annual mean). This provides a mechanism for this sector of the Antarctic Ice Sheet to respond rapidly to atmospheric warming. We infer that delivery of water to the bed transiently increases basal water pressure, enhancing basal motion, but efficient evacuation subsequently reduces water pressure causing ice deceleration. Currently, melt events are sporadic, so efficient subglacial drainage cannot be maintained, resulting in multiple short-lived (<6 day) ice flow perturbations. Future increases in meltwater could induce a shift to a glacier dynamic regime characterised by seasonal-scale hydrologically-driven ice flow variations.

A unique presentation of destructive shoulder arthropathy in the chronic phase of chronic myeloid leukaemia.

We present a previously unreported case of rapidly progressing, destructive shoulder arthropathy as an initial presentation of chronic phase chronic myeloid leukaemia. This patient initially presented to clinic for consideration of an arthroplasty for symptom relief; however, her loss to follow-up yielded a rapid progression of her symptoms. Bone marrow aspirate and targeted biopsy of the humeral head excluded blast cell crisis, in contrast to previously reported cases. She was treated conservatively with medical management of her underlying disease. Although leukaemic arthritis is a recognized phenomenon, chronic myeloid leukaemia is not known to cause bone destruction of this kind, particularly in the absence of blast crisis. Medical treatment with a tyrosine kinase inhibitor provided a dramatic improvement in our patient's pain, without the risk of attempted arthroplasty in unknown bone quality. We describe a unique presentation of severe bone destruction as a manifestation of chronic myeloid leukaemia in the absence of blast crisis. This should be considered as a rare differential diagnosis in joint arthropathy and may be appropriately managed initially with medical therapy, whereas future arthroplasty comprises uncharted territory in unknown bone quality.

Student Motivation in High School Physical Education: A Latent Profile Analysis Approach.

Guided by the principles of self-determination theory, the purpose of this study was to identify latent profiles representing high school students' motivational regulations for physical education (PE) and to model putative predictors and outcomes of profile membership. A sample of 532 Australian high school students, age 12-16 years (M = 13.83, SD = 1.13), reported their motivation for PE, perceptions of need satisfaction in PE, and effort expended in PE. Latent profile analysis revealed evidence of 3 distinct profiles that were consistent with continuum expectations outlined in self-determination theory (i.e., the moderately autonomous, moderately controlled, and highly autonomous profiles), alongside 2 profiles characterized by levels of introjected regulation that aligned with autonomous motives (i.e., the mixed motivation and amotivated profiles). Analyses also revealed that, on the whole, greater need satisfaction predicted membership of more autonomous profiles and that membership of such profiles was predictive of greater self-reported effort in PE. Analyses revealed evidence of qualitatively distinct motivation profiles that were differentially predicted by students' psychological need satisfaction and predictive of in-class effort. This study is not only the first to use latent profile analysis to explore the role of psychological need satisfaction in predicting PE motivation profiles. It also provides practical information regarding the prevalence and potential outcomes of students' motivation profiles.

Testing a continuum structure of self-determined motivation: A meta-analysis.

Self-determination theory proposes a multidimensional representation of motivation comprised of several factors said to fall along a continuum of relative autonomy. The current meta-analysis examined the relationships between these motivation factors in order to demonstrate how reliably they conformed to a predictable continuum-like pattern. Based on data from 486 samples representing over 205,000 participants who completed 1 of 13 validated motivation scales, the results largely supported a continuum-like structure of motivation and indicate that self-determination is central in explaining human motivation. Further examination of heterogeneity indicated that while regulations were predictably ordered across domains and scales, the exact distance between subscales varied across samples in a way that was not explainable by a set of moderators. Results did not support the inclusion of integrated regulation or the 3 subscales of intrinsic motivation (i.e., intrinsic motivation to know, to experience stimulation, and to achieve) due to excessively high interfactor correlations and overlapping confidence intervals. Recommendations for scale refinements and the scoring of motivation are provided. (PsycINFO Database Record

Trunk extensor fatigue decreases jump height similarly under stable and unstable conditions with experienced jumpers.

PURPOSE: The purpose of this study was to investigate the effects of back extensor fatigue on performance measures and electromyographic (EMG) activity of leg and trunk muscles during jumping on stable and unstable surfaces. METHODS: Before and after a modified Biering-Sorensen fatigue protocol for the back extensors, countermovement (CMJ) and lateral jumps (LJ) were performed on a force plate under stable and unstable (balance pad on the force plate) conditions. Performance measures for LJ (contact time) and CMJ height and leg and trunk muscles EMG activity were tested in 14 male experienced jumpers during 2 time intervals for CMJ (braking phase, push-off phase) and 5 intervals for LJ (-30 to 0, 0-30, 30-60, 60-90, and 90-120 ms) in non-fatigued and fatigued conditions. RESULTS: A significant main effect of test (fatigue) (p = 0.007, f = 0.57) was observed for CMJ height. EMG analysis showed a significant fatigue-induced decrease in biceps femoris and gastrocnemius activity with CMJ (p = 0.008, f = 0.58 andp = 0.04, f = 0.422, respectively). LJ contact time was not affected by fatigue or surface interaction. EMG activity was significantly lower in the tibialis anterior with LJ following fatigue (p = 0.05, f = 0.405). A test x surface (p = 0.04, f = 0.438) interaction revealed that the non-fatigued unstable CMJ gastrocnemius EMG activity was lower than the non-fatigued stable condition during the onset-of-force phase. CONCLUSION: The findings revealed that fatiguing the trunk negatively impacts CMJ height and muscle activity during the performance of CMJs. However, skilled jumpers are not additionally affected by a moderately unstable surface as compared to a stable surface.

Exploring the feasibility of dose escalation positron emission tomography-positive disease with intensity-modulated radiation therapy and the effects on normal tissue structures for thoracic malignancies.

The pattern of failure is one of the major causes of mortality among thoracic patients. Studies have shown a correlation between local control and dose. Intensity-modulated radiation therapy (IMRT) has resulted in conformal dose distributions while limiting dose to normal tissue. However, thoracic malignancies treated with IMRT to highly conformal doses up to 70 Gy still have been found to fail. Thus, the need for dose escalation through simultaneous integrated boost (SIB) may prove effective in minimizing reoccurrences. For our study, 28 thoracic IMRT plans were reoptimized via dose escalation to the gross tumor volume (GTV) and planning target volume (PTV) of 79.2 Gy and 68.4 Gy, respectively. Reoccurrences in surrounding regions of microscopic disease are rare therefore, dose-escalating regional nodes (outside GTV) were not included. Hence, the need to edit GTV margins was acceptable for our retrospective study. A median dose escalation of approximately 15 Gy (64.8-79.2 Gy) via IMRT using SIB was deemed achievable with minimal percent differences received by critical structures compared with the original treatment plan. The target's mean doses were significantly increased based on p-value analysis, while the normal tissue structures were not significantly changed.