The need for a manifesto for educational programme evaluation

This paper explores the progress of educational programme evaluation over three decades through the lens of a group of evaluators primarily from the UK and the US who met periodically from 1972 to 2004 to review the state of the art of educational programme evaluation—what it could and could not do—in relation to the complexity of programme initiatives and the policy and political contexts of the times. These meetings came to be known as the Cambridge conferences as they were always held at a university college in Cambridge. They were sponsored in the main by the Nuffield Foundation and, in 2004, by the ESRC. The nucleus of original group membership was retained over the years for continuity with additional members joining as the specific focus of the conference changed and new ideas were sought. There have been six conferences. This paper first locates the contextual origin of and reason for the first conference and the manifesto that was written from it. Secondly it documents the revisiting of that manifesto at the sixth conference leading to the construction of a ‘new’ manifesto that reflects changes required in evaluation methodology in the socio/political context of the first decade of the twenty‐first century.     

Long-axis rotation: the missing link in proximal-to-distal segmental sequencing

Most assessments of segmental sequencing in throwing, striking or kicking have indicated a proximal-to-distal sequencing of end-point linear speeds, joint angular velocities, segment angular velocities and resultant joint moments. However, the role of long-axis rotations has not been adequately quantified and located in the proximal-to-distal sequence. The timing and importance of upper arm internal-external rotation and pronation-supination in the development of racquet head speed have been examined in the tennis serve and squash forehand drive and considered in relation to conventional concepts of proximal-to-distal sequencing. Both long-axis rotations reached their peak angular speeds late in both strokes, typically after shoulder flexion-extension, shoulder abduction-adduction and elbow extension. These results clarify and confirm the importance of upper limb long-axis rotations in the production of racquet head speed. It appears that traditional proximal-to-distal sequencing concepts are inadequate to describe accurately the complexity of the tennis serve or squash forehand drive. It is essential to consider upper arm and forearm longitudinal axis rotations in explaining the mechanics of these movements and in developing coaching emphases, strength training schedules and injury prevention programmes.     

Net forces during tethered simulation of underwater streamlined gliding and kicking techniques of the freestyle turn

We assessed the net forces created when towing swimmers while gliding and kicking underwater to establish an appropriate speed for initiating underwater kicking, and the most effective gliding position and kicking technique to be applied after a turn. Sixteen experienced male swimmers of similar body shape were towed by a motorized winch and pulley system. A load cell measured net force (propulsive force - drag force) at speeds of 1.6, 1.9, 2.2, 2.5 and 3.1 m x s(-1). At each speed, the swimmers performed a prone streamline glide, a lateral streamline glide, a prone freestyle kick, a prone dolphin kick and a lateral dolphin kick. A two-way repeated-measures analysis of variance revealed significant differences between the gliding and kicking conditions at different speeds. The results demonstrated an optimal range of speeds (1.9 to 2.2 m x s(-1)) at which to begin underwater kicking to prevent energy loss from excessive active drag. No significant differences were found between the prone and lateral streamline glide positions or between the three underwater kicking techniques. Therefore, there appears to be no significant advantage in using one streamlining technique over another or in using one kicking style over another.