Posture-related affordances guide attacks in basketball

Objectives

The purpose of this study was to investigate the decision made by the attacker to drive to the left or right of the defender.

Method

Participants were 32 novice and intermediate basketball players who were assigned the role of attacker or defender in a one-on-one subphase. We manipulated the defender’s posture and measured both the postures of defenders and attackers and the ensuing decision on drive direction.

Results

As hypothesized, the posture of defenders guided the decision behavior of the attacker. Both novice and intermediate attackers made the same affordance-based decision by driving to the side of the defender’s most advanced foot, but only when the distance between attacker and defender was small. Moreover, novice attackers conveyed postural information regarding their upcoming drive direction while intermediate attackers were better able to conceal this information.

Conclusions

These results lend further support to the notion of information-based control of interpersonal actions in sport contexts.     

Blind spots in the search for happiness: Implicit attitudes and nonverbal leakage predict affective forecasting errors

We investigated implicit knowledge and affective forecasting, reasoning that although conscious evaluations are available to people when predicting their future emotional responses, nonconscious evaluations are not. However, these automatically-activated evaluations should contribute to in-the-moment emotional experiences, and thus they should account for misforecasts (i.e., discrepancies between affective forecasts and actual experiences). We conducted two studies to explore affective misforecasts, using food items as stimuli. In Study 1, participants' implicit attitudes (but not their explicit attitudes) predicted misforecasts of food enjoyment, supporting the role of nonconscious evaluations in affective forecasting errors. In Study 2, we examined participants' facial expressions (another index of nonconscious evaluation) upon the presentation of food items, and we found that these nonverbal behaviors predicted affective misforecasts as well. In sum, although nonconscious evaluations are unavailable when anticipating the future, they may contribute to one's in-the-moment experiences and thus serve as blind spots in affective forecasting.     

Utilizing probabilities as decision weights in closed and open information boards: A comparison of children and adults

Decisions in preschoolers (6 years), elementary schoolers (9.7 years), and adults (21 years) were studied with an information board crossing three probabilistic cues (validities: .83, .67, .50) with two options. Experiment 1 (n = 215) applied a standard version of the information board (closed presentation format), in which information must be searched sequentially and kept in mind for the decision. Experiment 2 (n = 217) applied an open format (Glöckner & Betsch, 2008), in which all information was visible during decision making. Elementary schoolers but not preschoolers benefited from an open format — indicated by an increase in using probabilities as decision weights. In the open but not closed format, choices were biased by normatively irrelevant information (the lure). Variations in the prediction patterns of the cues influenced decisions in all age groups. Effects for presentation format, pattern, and lure jointly indicate that even children are capable of considering multiple information in their decisions.     

信息与中西医临床诊治和决策研究

医学、生命科学是世界上最复杂的学科,其所涉及的知识面,几乎包含了现代科学及相关学科所有领域的知识面。这些知识面均以“信息的载体”表达出来,且信息随着各学科的发展,各种信息浩如烟海,因此如何对待医学知识信息的获取、选择、寻觅、探索、利用知识信息密切联系所诊治的病人及其专业,作出临床决策,将各种信息、包括信息知识标准规范化和信息反映疾病过程出现的假象和隐蔽信息的获取等予以分类,并用实际病例举例例证,以说明“信息”评价在医学思维临床决策中的重要性。