title: Investigating on-field decision making in rugby union

authors: Sherwood, Sebastian

subjects: Rugby union

abstract: Quick, accurate decision making in sport is essential for successful performance. In this five study thesis, psychological elements of decision making were investigated, guided by real world challenges encountered in a professional rugby organisation. Chapter 1 provided a background and review of relevant literature. Chapters 2 and 3 focused on pattern recall, an individual’s ability to recollect specific patterns from previous experiences. The results of Chapter 2 showed that professional players with more years of rugby experience were more accurate when recalling structured patterns. However, it was shown that pattern recall tasks did not predict on-field decision making performance and thus did not warrant inclusion in talent identification programs. Chapter 2 concluded that more appropriate stimuli (structured and semi-structured patterns) should be included in future studies to investigate the viability of pattern recall tasks for talent identification purposes. Chapter 3 found that a high tendency for decision reinvestment (a predisposition to consciously process decision-making) led to slower and less accurate performance on pattern recall tasks.

In Chapter 4, the effect of reinvestment (movement specific and decision specific) and expertise on anticipation of deceptive and non-deceptive movements was investigated. The results showed experts to be significantly more accurate than novices at anticipating both deceptive and non-deceptive movements. It was also found that experts took significantly longer to respond than novices. Decision reinvestment did not play a role in anticipatory performance; however, increased movement reinvestment tendencies were associated with poorer anticipatory accuracy of deceptive movements.

Both Chapter 5 and Chapter 6 investigated the decoy runners tactic, which is a novel form of deception in the literature to date, as it centres on players who are not in possession of the ball. The tactic involves multiple players in an attacking team running option lines off the ball carrier, making it possible that any of the players could receive the ball. Runners who do not receive the ball are decoys who aim to create confusion in defences. It was shown that decoy runners were significantly more effective when they displayed certain characteristics to attract defenders’ attention (i.e., hands up as if receiving the ball and line change as if exploiting a gap in the defensive line). Chapter 6 followed up on a claim made in the discussion of Chapter 5, that the increased effectiveness of decoy runners (when displaying certain characteristics) was caused by momentary inattentional blindness of the player who received the ball. This study showed that the player who received the ball was more likely to be unnoticed when attention was diverted by a secondary task – fitting the description of inattentional blindness (an individual failing to register an unexpected object clearly within their field of vision when their attention is diverted to another object or task (Mack & Rock, 1998)). The findings are summarised and discussed in the context of relevant research in the decision making field. Practical applications for coaches are provided and future directions for research are considered.

text: Investigating on-field decision making in rugby union Quick, accurate decision making in sport is essential for successful performance. In this five study thesis, psychological elements of decision making were investigated, guided by real world challenges encountered in a professional rugby organisation. Chapter 1 provided a background and review of relevant literature. Chapters 2 and 3 focused on pattern recall, an individual’s ability to recollect specific patterns from previous experiences. The results of Chapter 2 showed that professional players with more years of rugby experience were more accurate when recalling structured patterns. However, it was shown that pattern recall tasks did not predict on-field decision making performance and thus did not warrant inclusion in talent identification programs. Chapter 2 concluded that more appropriate stimuli (structured and semi-structured patterns) should be included in future studies to investigate the viability of pattern recall tasks for talent identification purposes. Chapter 3 found that a high tendency for decision reinvestment (a predisposition to consciously process decision-making) led to slower and less accurate performance on pattern recall tasks.

In Chapter 4, the effect of reinvestment (movement specific and decision specific) and expertise on anticipation of deceptive and non-deceptive movements was investigated. The results showed experts to be significantly more accurate than novices at anticipating both deceptive and non-deceptive movements. It was also found that experts took significantly longer to respond than novices. Decision reinvestment did not play a role in anticipatory performance; however, increased movement reinvestment tendencies were associated with poorer anticipatory accuracy of deceptive movements.

Both Chapter 5 and Chapter 6 investigated the decoy runners tactic, which is a novel form of deception in the literature to date, as it centres on players who are not in possession of the ball. The tactic involves multiple players in an attacking team running option lines off the ball carrier, making it possible that any of the players could receive the ball. Runners who do not receive the ball are decoys who aim to create confusion in defences. It was shown that decoy runners were significantly more effective when they displayed certain characteristics to attract defenders’ attention (i.e., hands up as if receiving the ball and line change as if exploiting a gap in the defensive line). Chapter 6 followed up on a claim made in the discussion of Chapter 5, that the increased effectiveness of decoy runners (when displaying certain characteristics) was caused by momentary inattentional blindness of the player who received the ball. This study showed that the player who received the ball was more likely to be unnoticed when attention was diverted by a secondary task – fitting the description of inattentional blindness (an individual failing to register an unexpected object clearly within their field of vision when their attention is diverted to another object or task (Mack & Rock, 1998)). The findings are summarised and discussed in the context of relevant research in the decision making field. Practical applications for coaches are provided and future directions for research are considered.

year: 2020

title: Applying the Reason Model to enhance health record research in the age of 'big data'.

authors: Ragupathy, Rajan

abstract: There is considerable international interest in applying powerful data research techniques (‘big data’) to health records.¹ This will become increasingly viable in New Zealand as previously siloed records held by private primary providers and public secondary institutions become accessible at the regional level—such as through the Midland Clinical Portal—and perhaps eventually even at the national level. Such research could, for instance, uncover the real-world safety and effectiveness of new health technologies, identify health disparities or optimise application of international guidelines in New Zealand.

text: Applying the Reason Model to enhance health record research in the age of 'big data'. There is considerable international interest in applying powerful data research techniques (‘big data’) to health records.¹ This will become increasingly viable in New Zealand as previously siloed records held by private primary providers and public secondary institutions become accessible at the regional level—such as through the Midland Clinical Portal—and perhaps eventually even at the national level. Such research could, for instance, uncover the real-world safety and effectiveness of new health technologies, identify health disparities or optimise application of international guidelines in New Zealand.

year: 2018

title: Covering tangata whenua in Aotearoa: a big data exploration of print media and Māori

authors: Phillips, Justin B.

abstract: A large body of academic research documents harmful media coverage of indigenous populations across the globe. New Zealand is no exception. Aotearoa’s indigenous people, Māori, share similar damaging experiences, leading one major NZ media company to publish an apology for their historically poor depiction of tangata whenua. This paper adds to that wealth of evidence using the automated methods of machine learning to examine coverage of Māori in NZ print media. Across roughly 800,000 sentences–spanning over two decades of coverage–this research investigates print media discourses involving Māori at a mass scale while demonstrating the applicability of such tools for further research. The results replicate a collection of existing findings at large-N scale, further documenting problematic discussions of violence, political representation, and culture, among several other concerns. The novel approach also hints at complex, obscure relationships embedded within problematic language in Aotearoa’s print media, identifying notions of division - both implied and otherwise - along with notable instances of resistance.

text: Covering tangata whenua in Aotearoa: a big data exploration of print media and Māori A large body of academic research documents harmful media coverage of indigenous populations across the globe. New Zealand is no exception. Aotearoa’s indigenous people, Māori, share similar damaging experiences, leading one major NZ media company to publish an apology for their historically poor depiction of tangata whenua. This paper adds to that wealth of evidence using the automated methods of machine learning to examine coverage of Māori in NZ print media. Across roughly 800,000 sentences–spanning over two decades of coverage–this research investigates print media discourses involving Māori at a mass scale while demonstrating the applicability of such tools for further research. The results replicate a collection of existing findings at large-N scale, further documenting problematic discussions of violence, political representation, and culture, among several other concerns. The novel approach also hints at complex, obscure relationships embedded within problematic language in Aotearoa’s print media, identifying notions of division - both implied and otherwise - along with notable instances of resistance.

year: 2022