The right man in the right place? Substitutions and goal-scoring in soccer

ObjectivesWe investigate how the goal-scoring probability in international club soccer evolves after player substitutions.DesignTo this end, we analyse rich data concerning 2,025 recent soccer games played in the two most prestigious club soccer competitions, i.e. the UEFA Champions League and the UEFA Europa League.MethodAs first in the literature, we control for within-game dynamics by applying a minute-by-minute bivariate probit approach.Results/ConclusionsWe find that teams experience increased goal-scoring probabilities after their first and second substitution and a decreased probability of scoring after the three substitutions made by their opponent. This association is less distinct during the first 3 mins after the substitution, which is consistent with difficulties to adapt to (i) the game intensity by the substitute player or (ii) tactical changes by the entire team. Furthermore, we find that the change in the goal-scoring probability is substantially bigger if the team is losing at the moment of the substitution.     

A dual-process model of affective and instrumental attitudes in predicting physical activity

IntroductionA novel dual-process model based upon the affective-reflective theory which distinguishes between affective attitude and instrumental attitude at an explicit and implicit level was used to predict physical activity.MethodUndergraduate students (N = 114) completed a lab-based study at two time-points, spaced two weeks apart. Participants completed self-report measures of the theory of planned behavior constructs, including explicit affective attitude and explicit instrumental attitude. Implicit affective attitude and implicit instrumental attitude were measured using single category implicit association tests.ResultsExplicit affective attitude and perceived behavioral control indirectly predicted physical activity through intention, and explicit affective attitude, implicit affective attitude, and intention predicted physical activity directly with a modest effect size (R² = 0.24).DiscussionFindings suggest explicitly and implicitly held evaluative information are conceptually distinct, and affective evaluations are key in guiding physical activity behavior regardless of whether such evaluations are implicit or consciously accessible.     

When the final whistle blows: Social identity pathways support mental health and life satisfaction after retirement from competitive sport

For many athletes, retirement from higher levels of competitive sport poses significant challenges. Research has shown that athletic identity is a key predictor of adjustment trajectories, but the mechanisms through which this affects outcomes are less clear. Added to this, there has been limited research on the role that wider social identities, and the resources they enable, play in adjustment. Addressing both these issues, we examined theoretically derived social identity pathways to retirement adjustment in athletes who had played sport at higher competitive levels and two potential mechanisms, or psychological resources, through which adjustment might be enabled. This was examined in two samples: retired athletes from countries in Western (n = 215) and Eastern (n = 183) regions. Loss of athletic identity, social group memberships (multiple, maintained and new), psychological resources (perceived meaning in life and control), and adjustment (life satisfaction, depression, and perceived physical health) were assessed. In both samples, the loss of athletic identity undermined adjustment by reducing meaning in life and perceived control. Path analysis showed that both maintained and gained social group memberships counteracted the negative effects of athletic identity loss on adjustment. Evidence that these pathways enabled access to psychological resources was found primarily in Chinese athletes, with maintained groups influencing personal control and new groups influencing meaning in life. These findings highlight the importance of social identity processes to retirement from higher levels of competitive sport and the mechanisms through which they can either support or undermine adjustment.     

The Factors that Motivate Law Enforcement's Use of Force: A Systematic Review

Media attention relevant to law enforcement use of force in the last decade finally alerted the scientific community to the need for more research regarding law enforcement discretion and decision making. The purpose of this study was to synthesize the existing literature to explore the motivating factors for law enforcement use of force. This study will utilize a social–ecological framework to systematically examine factors that impact officer decisions to use force at the individual and community levels. The paper includes recommendations for research and practice through an equity lens that highlights the disparate use of force against men of color in particular. Interventions, trainings, education, and research to stop the promotion of perceived safety over justice will be highlighted.     

Scale Alignment in the Between-Item Multidimensional Partial Credit Model

In between-item multidimensional item response models, it is often desirable to compare individual latent trait estimates across dimensions. These comparisons are only justified if the model dimensions are scaled relative to each other. Traditionally, this scaling is done using approaches such as standardization—fixing the latent mean and standard deviation to 0 and 1 for all dimensions. However, approaches such as standardization do not guarantee that Rasch model properties hold across dimensions. Specifically, for between-item multidimensional Rasch family models, the unique ordering of items holds within dimensions, but not across dimensions. Previously, Feuerstahler and Wilson described the concept of scale alignment, which aims to enforce the unique ordering of items across dimensions by linearly transforming item parameters within dimensions. In this article, we extend the concept of scale alignment to the between-item multidimensional partial credit model and to models fit using incomplete data. We illustrate this method in the context of the Kindergarten Individual Development Survey (KIDS), a multidimensional survey of kindergarten readiness used in the state of Illinois. We also present simulation results that demonstrate the effectiveness of scale alignment in the context of polytomous item response models and missing data.     

幸灾乐祸的重新审视和互动过程模型的构想

幸灾乐祸是人类普遍存在的一种社会情绪, 但却是一个远未研究透彻的领域。以往研究将幸灾乐祸视为一种不道德的情绪, 而现在越来越多的研究者认为其有一定的正向意义并循此展开研究。通过对国内外相关研究的全面梳理, 对幸灾乐祸的概念与测量方法的总结及对现有研究的整合, 构想了幸灾乐祸的互动过程模型。该模型的优势在于基于互动视角融合了互动双方(自身和他人)因素, 并基于过程视角明晰了幸灾乐祸乐祸发生的过程和发生后的变化。该模型指出今后研究者应关注幸灾乐祸前后事件的发生情境和情境中的多方互动, 并希冀对其他社会情绪研究具有一定启发意义。     

人际互动中社会学习的计算神经机制

人类在社会互动中通过他人的行为对他人特质、意图及特定情境下的社会规范进行学习, 是优化决策、维护积极社会互动的重要条件。近年来, 越来越多的研究通过结合计算模型与神经影像技术对社会学习的认知计算机制及其神经基础进行了深入考察。已有研究发现, 人类的社会学习过程能够较好地被强化学习模型与贝叶斯模型刻画, 主要涉及的认知计算过程包括主观期望、预期误差和不确定性的表征以及信息整合的过程。大脑对这些计算过程的执行主要涉及奖惩加工相关脑区(如腹侧纹状体与腹内侧前额叶)、社会认知加工相关脑区(如背内侧前额叶和颞顶联合区)及认知控制相关脑区(如背外侧前额叶)。需要指出的是, 计算过程与大脑区域之间并不是一一映射的关系, 提示未来研究可借助多变量分析与脑网络分析等技术从系统神经科学的角度来考察大尺度脑网络如何执行不同计算过程。此外, 将来研究应注重生态效度, 利用超扫描技术考察真实互动下的社会学习过程, 并更多地关注内隐社会学习的计算与神经机制。     

道德困境研究的范式沿革及其理论价值

通过评述道德困境研究范式的发展过程, 系统阐释了经典两难法、加工分离法、CNI模型法和CAN算法的优缺点和理论价值。后来的研究范式均在一定程度上克服了之前研究范式的局限。加工分离法克服了经典两难法的加工纯粹性假设等局限, CNI模型法在加工分离法基础上进一步分离了道德困境决策的多种心理过程, CAN算法则修正了CNI模型法的序列加工的不恰当预设。研究范式的沿革启示研究者综合应用新方法来解决研究争议和重新审视以往道德理论, 合理应用新方法来探索其他具有潜在冲突性的研究议题。总之, 本文为道德困境及相关研究提供了方法学参考。     

同伴对青少年冒险行为的影响及其作用机制

青少年更倾向于从事冒险或鲁莽行为, 并且更容易受到同伴影响。从个人特质和社交互动等多个角度探讨的研究结果表明, 同伴对青少年冒险行为存在助长作用, 即当同伴在场时, 青少年的行为会更加冒险。同伴对青少年冒险行为的作用机制可以从心理、神经、遗传、社会文化等多个层面进行解释：在心理层面, 这种影响源于青少年寻求同伴认可和归属感的需要, 以及社会学习的作用; 在神经机制层面, 源于认知控制网络和刺激处理系统的相互作用; 在遗传层面, 源于特定基因的易感性等; 在社会文化层面, 同伴影响会因文化差异而带来程度与表现上的差异。未来研究应从发展、文化心理、构建复杂模型网络等视角深入探究同伴对青少年冒险行为的影响。