Gaze following and gaze priming in lemurs

Although primates have often been found to co-orient visually with other individuals, members of these same species have usually failed to use co-orientation to find hidden food in object-choice experiments. This presents an evolutionary puzzle: what is the function of co-orientation if it is not used for a function as basic as locating resources? Co-orientation responses have not been systematically investigated in object-choice experiments, and requiring co-orientation with humans (as is typical in object-choice tasks) may underestimate other species’ abilities. Using an object-choice task with conspecific models depicted in photographs, we provide experimental evidence that two lemur species (Eulemur fulvus, n = 4, and Eulemur macaco, n = 2) co-orient with conspecifics. Secondly, by analysing together two measures that have traditionally been examined separately, we show that lemurs’ gaze following behaviour and ultimate choice are closely linked. Individuals were more likely to choose correctly after having looked in the same direction as the model, and thus chose objects correctly more often than chance. We propose a candidate system for the evolutionary origins of more complex gaze following: ‘gaze priming.’     

The effect of biased lineup instructions on eyewitness identification confidence

Although it is well‐known that biased lineup instructions (i.e., those that do not inform witnesses the perpetrator may not be in the lineup) inflate false identifications, their effects on witness confidence are less well understood due to methodological limitations of past studies. We report two studies that use novel methodologies to obviate these limitations. Study 1 (N = 177) demonstrated that biased lineup instructions increased witnesses' average estimates of the likelihood that a lineup member is guilty. Study 2 (N = 137) introduces a novel debiasing paradigm that allows a parsing of choosers into those who made an identification only because of the biased instructions (induced choosers), and those who would have chosen despite the instructions (inherent choosers). Biased lineup instructions inflated confidence only among induced choosers, but not among inherent choosers. Contrary to legal reasoning, witness confidence is an insufficient metric to determine the suggestiveness of biased instructions.     

Processing head fakes in basketball: Are there ironic effects of instructions on the head-fake effect in basketball?

Instructions in sports are used to improve athletes’ performance. However, instructions can also impair performance if they direct athletes’ attention to a to-be-avoided behavior which paradoxically provokes exactly that behavior (ironic effect). The present study investigates the impact of different instructions on the head-fake effect in basketball. Specifically, we asked here if deliberate attempts to ignore the deceptive cues gaze direction and head orientation increase the impact of that information and thus, paradoxically increase the head-fake effect. We found that the detrimental impact of spatially incongruent gaze direction and head orientation was essentially independent of whether participants were, or were not, instructed to deliberately ignore the task-irrelevant information. Hence, deceptive actions exert their impact independent of the perceivers’ attempts to ignore deceptive cues. We thus conclude that the deceptive cues gaze direction and head orientation are per se hyper-accessible or over-salient and its processing cannot be controlled with any amount of mental capacity (and even not with the non-ironic instruction). However, as both ignore instructions produce general processing costs (i.e., slower reactions) coaches should solely instruct athletes’ to focus attention on the processing of the pass direction.     

试析道教劝善书中的生态伦理思想

道教劝善书作为一种伦理道德教化书 ,其中所述的伦理道德规范不仅用以调节人与人之间、人与社会之间的相互关系 ,而且还进一步推广到调节人与动植物、人与自然的关系 ;它主张自然界生命的平等性 ,倡导“贵生”的生命情怀 ,提出“是道则进 ,非道则退”的生态伦理行为准则 ,从而形成了具有神学特征的以生命为中心的生态伦理观。     

‘Please sort these voice recordings into 2 identities’: Effects of task instructions on performance in voice sorting studies

We investigated the effects of two types of task instructions on performance on a voice sorting task by listeners who were either familiar or unfamiliar with the voices. Listeners were asked to sort 15 naturally varying stimuli from two voice identities into perceived identities. Half of the listeners sorted the recordings freely into as many identities as they perceived; the other half were forced to sort stimuli into two identities only. As reported in previous studies, unfamiliar listeners formed more clusters than familiar listeners. Listeners therefore perceived different naturally varying stimuli from the same identity as coming from different identities, while being highly accurate at telling apart the stimuli from different voices. We further show that a change in task instructions – forcing listeners to sort stimuli into two identities only – helped unfamiliar listeners to overcome this selective failure at ‘telling people together’. This improvement, however, came at the cost of an increase in errors in telling people apart. For familiar listeners, similar non-significant trends were apparent. Therefore, even when informed about correct number of identities, listeners may fail to accurately perceive identity further highlighting that voice identity perception in the context of natural within-person variability is a challenging task. We discuss our results in terms of similarities and differences to findings in the face perception literature and their importance in applied settings, such as forensic voice identification.     

Attention AND mentalizing? Reframing a debate on social orienting of attention

ABSTRACT

People spontaneously attend where others are looking. Recently, it has been debated whether such orienting behaviour is supported by domain-general attentional processes, that involve reading the cues’ directional properties, or by processes that involve attributing mental states to agents. In this Opinion, we summarize key evidence for each position and argue that instead of favouring one or the other view, the available data point to an integrated framework in which the attribution of mental states and the operation of domain-general attentional processes both contribute to social orienting. In addition to providing a novel perspective, this view opens several fruitful future research avenues aimed at understanding how the two processes act together to influence cognitions and behaviour.     

Effectiveness of the Visual–Auditory Shadowing Method on Learning the Pronunciation of Kanji

This study investigates whether the visual–auditory (VA) shadowing method can better facilitate vocabulary learning for learners of Japanese as a second language (JSL) than the visual–visual (VV) shadowing method in K-8 immersion education. Learning vocabulary involves three aspects: meaning, orthography, and pronunciation. The Japanese language has complex orthography and pronunciation. Learners of Japanese need to learn three kinds of orthographic characters: ideographs (kanji) and two kinds of syllabic characters (hiragana and katakana). In addition, because the pronunciation of kanji can vary by context, learners must learn several pronunciations for a single kanji character. This study explores a reasonable way to learn pronunciations of kanji and compares VA shadowing (n = 48) and VV shadowing (n = 47) to investigate which condition better facilitates learning the pronunciation of Japanese ideographs. The analysis suggests that compared to the VV shadowing condition (p < .05), the VA shadowing condition is more effective for Level 3 learners but not for Level 2 or Level 1 learners.