Aging increases inattentional blindness to the gorilla in our midst

When engaged in an attention-demanding task, people are surprisingly vulnerable to inattentional blindness--the failure to notice an unexpected event. Two theories of cognitive aging, attentional capacity models and inhibitory deficit models, make opposite predictions about age differences in susceptibility to inattentional blindness. We tested these predictions using an inattentional blindness paradigm developed by Simons and Chabris (1999) and found that older adults were more likely to experience inattentional blindness than young adults. These results are compatible with attentional capacity models of cognitive aging but not with current inhibitory deficit models.     

Gorillas in our midst: sustained inattentional blindness for dynamic events

With each eye fixation, we experience a richly detailed visual world. Yet recent work on visual integration and change direction reveals that we are surprisingly unaware of the details of our environment from one view to the next: we often do not detect large changes to objects and scenes ('change blindness'). Furthermore, without attention, we may not even perceive objects ('inattentional blindness'). Taken together, these findings suggest that we perceive and remember only those objects and details that receive focused attention. In this paper, we briefly review and discuss evidence for these cognitive forms of 'blindness'. We then present a new study that builds on classic studies of divided visual attention to examine inattentional blindness for complex objects and events in dynamic scenes. Our results suggest that the likelihood of noticing an unexpected object depends on the similarity of that object to other objects in the display and on how difficult the priming monitoring task is. Interestingly, spatial proximity of the critical unattended object to attended locations does not appear to affect detection, suggesting that observers attend to objects and events, not spatial positions. We discuss the implications of these results for visual representations and awareness of our visual environment.     

A cheat in our midst: How people evaluate and respond to fellow group members who cheat

Having a group cheat within a group can violate group trust and reduce the benefits gained from group membership. However, group members will sometimes cheat to get an advantage over other in‐group members. In two experiments, the present research investigated how group members evaluate and respond to fellow group members who cheat, and whether group prototypicality or evaluators’ group identification moderate evaluations and behavioral recommendations toward group cheats. In Study 1 (N = 146 undergraduate students), group members evaluated group cheats more negatively than a comparable group deviant. However, highly identified group members would spare a cheat who had high group prototypicality. In Study 2 (N = 227 undergraduate students), highly identified group members rated a one‐time cheat with high prototypicality more favorably than a one‐time cheat with low prototypicality. However, prototypicality did not moderate evaluations toward a multiple time group cheat. In both studies, target evaluations were associated with changes in behavioral recommendations. Overall, results indicate a pattern similar to research on transgression or deviance credit: having group prototypicality can save a group cheat from an initial negative evaluation from highly identified group members, but prototypicality does not buffer against negative evaluations toward multiple time group cheaters.     

Bears in our midst: Familiarity with Level 2 driving automation and attending to surprise on-road events

This study presents an on-road paradigm to measure the effect of Level 2 (L2) system familiarity on attention strategies to salient, but non-hazardous, driving-related events when using the driving automation. A vehicle with an oversized pink teddy bear on the back overtook participants three times while they drove a 2019 Mercedes-Benz C300 equipped with a L2 system for 1 h. This L2 system requires drivers to keep their hands on the wheel while activated. The L2 system was turned on or off, depending on the assigned condition, and participants varied in their familiarity with L2 systems. Cameras recorded participant eye glance behavior. After the drive, participants were asked to recall the bear and the number of times their mind had wandered from the driving task during the drive. Results show that the driving automation support gave only participants familiar with L2 systems an advantage for greater bear recall. Unfamiliar participants were at a relative disadvantage when assisted by the L2 system, with generally poorer bear recall than unfamiliar participants who drove with the system off. Better bear recall corresponded with wider on-road gaze dispersion and more instances of mind wandering. Our findings support the effectiveness of this paradigm to measure driver attention when using a L2 system under real-world conditions and highlight the need to consider the role of driving automation familiarity in future research.     

The role of social meaning in inattentional blindness: When the gorillas in our midst do not go unseen

Without visual attention, even the obvious–like a gorilla walking through a scene of people–goes undetected (Mack & Rock, 1998; Simons & Chabris, 1999). This “inattentional blindness” is a persistent, well-documented limitation of the human visual system. The current research examines whether social meaning reduces this visual bias by imbuing unexpected objects with signal value, thus increasing their relevance and facilitating perception. Using one of the most established illustrations of inattentional blindness, we show for the first time that activating a social association, even an erroneous one (i.e., the African American–ape association), drastically attenuates inattentional blindness. This is not accounted for by visual feature matching. Rather, these results suggest that social meaning, even when flawed, may direct our visual system towards associated visual information that would otherwise be overlooked. As such, these results provide a powerful replication of the African American–ape association and illustrate that this broadly held association has the power to spontaneously change the content of one's visual world.     

1. Life in the midst of death

The main presentations on the Sixth Assembly theme and its sub-themes were accompanied by a number of brief presentations testifying to the way in which Jesus Christ is present and alive in concrete situations in different parts of the world. The following are abbreviated versions of some of those testimonies.     

现代科学技术革命改变了流行病学面貌

本世纪中叶在世界范围内兴起的科学技术革命,不仅极大地推动了人类社会经济和政治领域的变革,也对医学和流行病学产生了深远的影响。科学技术的进步,意味着人类利用流行病学思维和方法攻克疾病能力的提高。1　流行病学的内涵及研究范围随着科学技术的发展,流行病学作为预防医学的牵头学科,其内涵和研究范围都在迅速地扩展。流行病学一词的雏形可追朔到古希腊的希波克拉底(Ｈｉｐｐｏｃｒａｔｅｓ)时代,他在一篇“空气、水、地点”的著名文献中首先使用了“ｅｐｉｄｅｍｅｉｏｎ”一词,原义“去访问”的意思,引申意义为访问一个社区会发生哪…     

A model for evaluation in child custody disputes

Abstract

Over one million children in the United States were involved in child custody decisions in the past year (Glick, 1979). Mental health professionals have been increasingly employed in such decisions. In this paper, we will delineate a model for clinicians to use in evaluating the family with respect to custody and will describe the values which guide our methods and recommendations.     

A pragmatic perspective of repetition in child language

The contention that repetition may be used for a variety of communicative functions is supported with data from a longitudinal study of one child. Repetitions were identified from videotapes and then classified according to the communicative function being expressed. Additionally, discourse profiles were identified for various communicative functions being expressed via repetition.