2A systematic observation method has been one of the most popularly employed 3 methods in coaching research. Kahan's review of this method conducted between 4 1975-1997 highlighted the key trends in this research, and offered methodological 5 guidance for researchers wishing to use this method in their research.

14The aim of this study was to investigate the impact of video feedback on five English youth 15 football coaches' reflection and practice behaviours over a three season period. First, 16 quantitative data were collected using the Coach Analysis and Intervention System (CAIS) 17 during season one and season three. Data from CAIS results showed that over the three 18 seasons the coaches decreased their total instruction and total feedback and increased silence 19 'on-task'. Four out of the five coaches also increased the use of total questioning behaviour. 20Second, interviews revealed how video feedback gave structure to reflective conversations 21 that improved self-awareness and provided a trigger for behaviour change. The coaches 22 highlighted how video-based reflection challenged their current understanding and enabled a 23 range of learning sources to support and inform changed coach behaviour. 24 25 Introduction 26

The study aimed to establish the perceived importance that academy soccer practitioners placed on technical/tactical, physical, psycho-social player attributes during player selection and explore whether perceptions change according to Elite Player Performance Plan phase. Seventy academy practitioners working within Elite Player Performance Plan programs (Category 1: n = 29; Category 2: n = 13 and Category 3: n = 28) completed an online survey. Psychological factors were rated significantly ( p ≤ 0.01) higher than sociological, technical/tactical, and physical factors, with recruitment staff specifically valuing psychological factors significantly ( p ≤ 0.01) more than medical staff. Youth Development phase practitioners valued sociological factors significantly ( p < 0.05) more than in the Foundation phase, which was also true for physical factors. Practitioners indicated significant positional differences for most physical and technical/tactical attributes. There was no playing position effect for relative age effect or maturity. Between playing position variance of outfield players for most technical and physical attributes increased according to advancing Elite Player Performance Plan phase. Attitudes to holistic talent identification criteria likely change according to practitioner role. Therefore, this study provides evidence to suggest that Elite Player Performance Plan practitioners place less perceived importance on enhanced maturity status and relative age of players but does indicate an enhancing and significant positional preference for physical and technical/tactical attributes. Suggesting that practitioners are less likely to (de)select players based on transient, maturity-related attributes and instead place greater emphasis on specialist physical/technical position-specific attributes as players navigate the Elite Player Performance Plan pathway towards professional status.